'''This package contains mixin classes that are mixed in with generated classes:
- mixins/BaseMixin is mixed in with standard Zope classes;
- mixins/ToolMixin is mixed in with the generated application Tool class.'''
# ------------------------------------------------------------------------------
import os, os.path, sys, types, urllib, cgi
from appy import Object
import appy.gen as gen
from appy.gen.utils import *
from appy.gen.layout import Table, defaultPageLayouts
from appy.gen.descriptors import WorkflowDescriptor, ClassDescriptor
from appy.shared.utils import sequenceTypes,normalizeText,Traceback,getMimeType
from appy.shared.data import rtlLanguages
from appy.shared.xml_parser import XmlMarshaller
from appy.shared.diff import HtmlDiff
# ------------------------------------------------------------------------------
class BaseMixin:
'''Every Zope class generated by appy.gen inherits from this class or a
subclass of it.'''
_appy_meta_type = 'Class'
def get_o(self):
'''In some cases, we want the Zope object, we don't know if the current
object is a Zope or Appy object. By defining this property,
"someObject.o" produces always the Zope object, be someObject an Appy
or Zope object.'''
return self
o = property(get_o)
def getInitiatorInfo(self):
'''Gets information about a potential initiator object from the request.
Returns a 3-tuple (initiator, pageName, field):
* initiator is the initiator (Zope) object;
* pageName is the page on the initiator where the origin of the Ref
field lies;
* field is the Ref instance.
'''
rq = self.REQUEST
if not rq.get('nav', '').startswith('ref.'): return None, None, None
splitted = rq['nav'].split('.')
initiator = self.getTool().getObject(splitted[1])
fieldName, page = splitted[2].split(':')
return initiator, page, initiator.getAppyType(fieldName)
def createOrUpdate(self, created, values,
initiator=None, initiatorField=None):
'''This method creates (if p_created is True) or updates an object.
p_values are manipulated versions of those from the HTTP request.
In the case of an object creation from the web (p_created is True
and a REQUEST object is present), p_self is a temporary object
created in /temp_folder, and this method moves it at its "final"
place. In the case of an update, this method simply updates fields
of p_self.'''
rq = getattr(self, 'REQUEST', None)
obj = self
if created and rq:
# Create the final object and put it at the right place.
tool = self.getTool()
# The app may define a method klass.generateUid for producing an UID
# for instance of this class. If no such method is found, we use the
# standard Appy method to produce an UID.
id = None
klass = tool.getAppyClass(obj.portal_type)
if hasattr(klass, 'generateUid'):
id = klass.generateUid(obj.REQUEST)
if not id:
id = tool.generateUid(obj.portal_type)
if not initiator:
folder = tool.getPath('/data')
else:
folder = initiator.getCreateFolder()
# Check that the user can add objects through this Ref.
initiatorField.checkAdd(initiator)
obj = createObject(folder, id, obj.portal_type, tool.getAppName())
# Get the fields on the current page
fields = None
if rq: fields = self.getAppyTypes('edit', rq.get('page'))
# Remember the previous values of fields, for potential historization
previousData = None
if not created and fields:
previousData = obj.rememberPreviousData(fields)
# Perform the change on the object
if fields:
# Store in the database the new value coming from the form
for field in fields:
value = getattr(values, field.name, None)
field.store(obj, value)
if previousData:
# Keep in history potential changes on historized fields
obj.historizeData(previousData)
# Manage potential link with an initiator object
if created and initiator: initiator.appy().link(initiatorField.name,obj)
# Call the custom "onEdit" if available
msg = None # The message to display to the user. It can be set by onEdit
if obj.wrapperClass:
appyObject = obj.appy()
if hasattr(appyObject, 'onEdit'):
msg = appyObject.onEdit(created)
# Update last modification date
if not created:
from DateTime import DateTime
obj.modified = DateTime()
# Unlock the currently saved page on the object
if rq: self.removeLock(rq['page'])
obj.reindex()
return obj, msg
def updateField(self, name, value):
'''Updates a single field p_name with new p_value.'''
field = self.getAppyType(name)
# Remember previous value if the field is historized.
previousData = self.rememberPreviousData([field])
# Store the new value into the database
field.store(self, value)
# Update the object history when relevant
if previousData: self.historizeData(previousData)
# Update last modification date
from DateTime import DateTime
self.modified = DateTime()
def delete(self):
'''This method is self's suicide.'''
# Call a custom "onDelete" if it exists
appyObj = self.appy()
if hasattr(appyObj, 'onDelete'): appyObj.onDelete()
# Any people referencing me must forget me now
for field in self.getAllAppyTypes():
if field.type != 'Ref': continue
for obj in field.getValue(self):
field.back.unlinkObject(obj, self, back=True)
# Uncatalog the object
self.reindex(unindex=True)
# Delete the object
self.getParentNode().manage_delObjects([self.id])
def onDelete(self):
'''Called when an object deletion is triggered from the ui.'''
rq = self.REQUEST
self.delete()
if self.getUrl(rq['HTTP_REFERER'],mode='raw') ==self.getUrl(mode='raw'):
# We were consulting the object that has been deleted. Go back to
# the main page.
urlBack = self.getTool().getSiteUrl()
else:
urlBack = self.getUrl(rq['HTTP_REFERER'])
self.say(self.translate('delete_done'))
self.goto(urlBack)
def onDeleteEvent(self):
'''Called when an event (from object history) deletion is triggered
from the ui.'''
rq = self.REQUEST
# Re-create object history, but without the event corresponding to
# rq['eventTime']
history = []
from DateTime import DateTime
eventToDelete = DateTime(rq['eventTime'])
key = self.workflow_history.keys()[0]
for event in self.workflow_history[key]:
if (event['action'] != '_datachange_') or \
(event['time'] != eventToDelete):
history.append(event)
self.workflow_history[key] = tuple(history)
appy = self.appy()
self.log('Data change event deleted by %s for %s (UID=%s).' % \
(appy.user.login, appy.klass.__name__, appy.uid))
self.goto(self.getUrl(rq['HTTP_REFERER']))
def onUnlink(self):
'''Called when an object unlinking is triggered from the ui.'''
rq = self.REQUEST
tool = self.getTool()
sourceObject = tool.getObject(rq['sourceUid'])
targetObject = tool.getObject(rq['targetUid'])
field = sourceObject.getAppyType(rq['fieldName'])
field.unlinkObject(sourceObject, targetObject)
urlBack = self.getUrl(rq['HTTP_REFERER'])
self.say(self.translate('unlink_done'))
self.goto(urlBack)
def onCreate(self):
'''This method is called when a user wants to create a root object in
the "data" folder or an object through a reference field. A temporary
object is created in /temp_folder and the edit page to it is
returned.'''
rq = self.REQUEST
className = rq.get('className')
# Create the params to add to the URL we will redirect the user to
# create the object.
urlParams = {'mode':'edit', 'page':'main', 'nav':''}
initiator, initiatorPage, initiatorField = self.getInitiatorInfo()
if initiator:
# The object to create will be linked to an initiator object through
# a Ref field. We create here a new navigation string with one more
# item, that will be the currently created item.
splitted = rq.get('nav').split('.')
splitted[-1] = splitted[-2] = str(int(splitted[-1])+1)
urlParams['nav'] = '.'.join(splitted)
# Check that the user can add objects through this Ref field
initiatorField.checkAdd(initiator)
# Create a temp object in /temp_folder
tool = self.getTool()
id = tool.generateUid(className)
appName = tool.getAppName()
obj = createObject(tool.getPath('/temp_folder'), id, className, appName)
return self.goto(obj.getUrl(**urlParams))
def view(self):
'''Returns the view PX.'''
obj = self.appy()
return obj.pxView({'obj': obj, 'tool': obj.tool})
def edit(self):
'''Returns the edit PX.'''
obj = self.appy()
return obj.pxEdit({'obj': obj, 'tool': obj.tool})
def ajax(self):
'''Called via an Ajax request to render some PX whose name is in the
request.'''
obj = self.appy()
return obj.pxAjax({'obj': obj, 'tool': obj.tool})
def setLock(self, user, page):
'''A p_user edits a given p_page on this object: we will set a lock, to
prevent other users to edit this page at the same time.'''
if not hasattr(self.aq_base, 'locks'):
# Create the persistent mapping that will store the lock
# ~{s_page: (s_userId, DateTime_lockDate)}~
from persistent.mapping import PersistentMapping
self.locks = PersistentMapping()
# Raise an error is the page is already locked by someone else. If the
# page is already locked by the same user, we don't mind: he could have
# used back/forward buttons of its browser...
userId = user.login
if (page in self.locks) and (userId != self.locks[page][0]):
from AccessControl import Unauthorized
raise Unauthorized('This page is locked.')
# Set the lock
from DateTime import DateTime
self.locks[page] = (userId, DateTime())
def isLocked(self, user, page):
'''Is this page locked? If the page is locked by the same user, we don't
mind and consider the page as unlocked. If the page is locked, this
method returns the tuple (userId, lockDate).'''
if hasattr(self.aq_base, 'locks') and (page in self.locks):
if (user.login != self.locks[page][0]): return self.locks[page]
def removeLock(self, page, force=False):
'''Removes the lock on the current page. This happens:
- after the page has been saved: the lock must be released;
- or when an admin wants to force the deletion of a lock that was
left on p_page for too long (p_force=True).
'''
if page not in self.locks: return
# Raise an error if the user that saves changes is not the one that
# has locked the page (excepted if p_force is True)
if not force:
userId = self.getTool().getUser().login
if self.locks[page][0] != userId:
from AccessControl import Unauthorized
raise Unauthorized('This page was locked by someone else.')
# Remove the lock
del self.locks[page]
def removeMyLock(self, user, page):
'''If p_user has set a lock on p_page, this method removes it. This
method is called when the user that locked a page consults
pxView for this page. In this case, we consider that the user has
left the edit page in an unexpected way and we remove the lock.'''
if hasattr(self.aq_base, 'locks') and (page in self.locks) and \
(user.login == self.locks[page][0]):
del self.locks[page]
def onUnlock(self):
'''Called when an admin wants to remove a lock that was left for too
long by some user.'''
rq = self.REQUEST
tool = self.getTool()
obj = tool.getObject(rq['objectUid'])
obj.removeLock(rq['pageName'], force=True)
urlBack = self.getUrl(rq['HTTP_REFERER'])
self.say(self.translate('unlock_done'))
self.goto(urlBack)
def onCreateWithoutForm(self):
'''This method is called when a user wants to create a object from a
reference field, automatically (without displaying a form).'''
rq = self.REQUEST
self.appy().create(rq['fieldName'])
def intraFieldValidation(self, errors, values):
'''This method performs field-specific validation for every field from
the page that is being created or edited. For every field whose
validation generates an error, we add an entry in p_errors. For every
field, we add in p_values an entry with the "ready-to-store" field
value.'''
rq = self.REQUEST
for appyType in self.getAppyTypes('edit', rq.form.get('page')):
if not appyType.validable: continue
value = appyType.getRequestValue(rq)
message = appyType.validate(self, value)
if message:
setattr(errors, appyType.name, message)
else:
setattr(values, appyType.name, appyType.getStorableValue(value))
# Validate sub-fields within Lists
if appyType.type != 'List': continue
i = -1
for row in value:
i += 1
for name, field in appyType.fields:
message = field.validate(self, getattr(row,name,None))
if message:
setattr(errors, '%s*%d' % (field.name, i), message)
def interFieldValidation(self, errors, values):
'''This method is called when individual validation of all fields
succeed (when editing or creating an object). Then, this method
performs inter-field validation. This way, the user must first
correct individual fields before being confronted to potential
inter-field validation errors.'''
obj = self.appy()
if not hasattr(obj, 'validate'): return
msg = obj.validate(values, errors)
# Those custom validation methods may have added fields in the given
# p_errors object. Within this object, for every error message that is
# not a string, we replace it with the standard validation error for the
# corresponding field.
for key, value in errors.__dict__.iteritems():
resValue = value
if not isinstance(resValue, basestring):
resValue = self.translate('field_invalid')
setattr(errors, key, resValue)
return msg
def onUpdate(self):
'''This method is executed when a user wants to update an object.
The object may be a temporary object created in /temp_folder.
In this case, the update consists in moving it to its "final" place.
If the object is not a temporary one, this method updates its
fields in the database.'''
rq = self.REQUEST
tool = self.getTool()
errorMessage = self.translate('validation_error')
isNew = self.isTemporary()
# If this object is created from an initiator, get info about him.
initiator, initiatorPage, initiatorField = self.getInitiatorInfo()
# If the user clicked on 'Cancel', go back to the previous page.
buttonClicked = rq.get('button')
if buttonClicked == 'cancel':
if initiator:
# Go back to the initiator page.
urlBack = initiator.getUrl(page=initiatorPage, nav='')
else:
if isNew:
# Go back to the root of the site.
urlBack = tool.getSiteUrl()
else:
urlBack = self.getUrl()
self.say(self.translate('object_canceled'))
self.removeLock(rq['page'])
return self.goto(urlBack)
# Object for storing validation errors
errors = Object()
# Object for storing the (converted) values from the request
values = Object()
# Trigger field-specific validation
self.intraFieldValidation(errors, values)
if errors.__dict__:
rq.set('errors', errors.__dict__)
self.say(errorMessage)
return self.gotoEdit()
# Trigger inter-field validation
msg = self.interFieldValidation(errors, values)
if not msg: msg = errorMessage
if errors.__dict__:
rq.set('errors', errors.__dict__)
self.say(msg)
return self.gotoEdit()
# Before saving data, must we ask a confirmation by the user ?
appyObj = self.appy()
saveConfirmed = rq.get('confirmed') == 'True'
if hasattr(appyObj, 'confirm') and not saveConfirmed:
msg = appyObj.confirm(values)
if msg:
rq.set('confirmMsg', msg.replace("'", "\\'"))
return self.gotoEdit()
# Create or update the object in the database
obj, msg = self.createOrUpdate(isNew, values, initiator, initiatorField)
# Redirect the user to the appropriate page
if not msg: msg = self.translate('object_saved')
# If the object has already been deleted (ie, it is a kind of transient
# object like a one-shot form and has already been deleted in method
# onEdit), redirect to the main site page.
if not getattr(obj.getParentNode().aq_base, obj.id, None):
return self.goto(tool.getSiteUrl(), msg)
# If the user can't access the object anymore, redirect him to the
# main site page.
if not obj.allows('read'):
return self.goto(tool.getSiteUrl(), msg)
if (buttonClicked == 'save') or saveConfirmed:
obj.say(msg)
if isNew and initiator:
return self.goto(initiator.getUrl(page=initiatorPage, nav=''))
else:
return self.goto(obj.getUrl())
if buttonClicked == 'previous':
# Go to the previous page for this object.
# We recompute the list of phases and pages because things
# may have changed since the object has been updated (ie,
# additional pages may be shown or hidden now, so the next and
# previous pages may have changed). Moreover, previous and next
# pages may not be available in "edit" mode, so we return the edit
# or view pages depending on page.show.
phaseObj = self.getAppyPhases(currentOnly=True, layoutType='edit')
pageName, pageInfo = phaseObj.getPreviousPage(rq['page'])
if pageName:
# Return to the edit or view page?
if pageInfo.showOnEdit:
rq.set('page', pageName)
# I do not use gotoEdit here because I really need to
# redirect the user to the edit page. Indeed, the object
# edit URL may have moved from temp_folder to another place.
return self.goto(obj.getUrl(mode='edit', page=pageName))
else:
return self.goto(obj.getUrl(page=pageName))
else:
obj.say(msg)
return self.goto(obj.getUrl())
if buttonClicked == 'next':
# Go to the next page for this object.
# We remember page name, because the next method may set a new
# current page if the current one is not visible anymore.
pageName = rq['page']
phaseObj = self.getAppyPhases(currentOnly=True, layoutType='edit')
pageName, pageInfo = phaseObj.getNextPage(pageName)
if pageName:
# Return to the edit or view page?
if pageInfo.showOnEdit:
# Same remark as above (click on "previous").
return self.goto(obj.getUrl(mode='edit', page=pageName))
else:
return self.goto(obj.getUrl(page=pageName))
else:
obj.say(msg)
return self.goto(obj.getUrl())
return obj.gotoEdit()
def reindex(self, indexes=None, unindex=False):
'''Reindexes this object the catalog. If names of indexes are specified
in p_indexes, recataloging is limited to those indexes. If p_unindex
is True, instead of cataloguing the object, it uncatalogs it.'''
path = '/'.join(self.getPhysicalPath())
catalog = self.getPhysicalRoot().catalog
if unindex:
catalog.uncatalog_object(path)
else:
if indexes:
catalog.catalog_object(self, path, idxs=indexes)
else:
# Get the list of indexes that apply on this object. Else, Zope
# will reindex all indexes defined in the catalog, and through
# acquisition, wrong methods can be called on wrong objects.
iNames = self.wrapperClass.getIndexes().keys()
catalog.catalog_object(self, path, idxs=iNames)
def xml(self, action=None):
'''If no p_action is defined, this method returns the XML version of
this object. Else, it calls method named p_action on the
corresponding Appy wrapper and returns, as XML, the its result.'''
self.REQUEST.RESPONSE.setHeader('Content-Type','text/xml;charset=utf-8')
# Check if the user is allowed to consult this object
if not self.allows('read'):
return XmlMarshaller().marshall('Unauthorized')
if not action:
marshaller = XmlMarshaller(rootTag=self.getClass().__name__,
dumpUnicode=True)
res = marshaller.marshall(self, objectType='appy')
else:
appyObj = self.appy()
try:
methodRes = getattr(appyObj, action)()
res = XmlMarshaller().marshall(methodRes, objectType='appy')
except Exception, e:
tb = Traceback.get()
res = XmlMarshaller().marshall(tb, objectType='appy')
return res
def say(self, msg, type='info'):
'''Prints a p_msg in the user interface. p_logLevel may be "info",
"warning" or "error".'''
rq = self.REQUEST
if 'messages' not in rq.SESSION.keys():
plist = self.getProductConfig().PersistentList
messages = rq.SESSION['messages'] = plist()
else:
messages = rq.SESSION['messages']
messages.append( (type, msg) )
def log(self, msg, type='info'):
'''Logs a p_msg in the log file. p_logLevel may be "info", "warning"
or "error".'''
logger = self.getProductConfig().logger
if type == 'warning': logMethod = logger.warn
elif type == 'error': logMethod = logger.error
else: logMethod = logger.info
logMethod(msg)
def do(self):
'''Performs some action from the user interface.'''
rq = self.REQUEST
action = rq['action']
if rq.get('objectUid', None):
obj = self.getTool().getObject(rq['objectUid'])
else:
obj = self
if rq.get('appy', None) == '1': obj = obj.appy()
return getattr(obj, 'on'+action)()
def rememberPreviousData(self, fields):
'''This method is called before updating an object and remembers, for
every historized field, the previous value. Result is a dict
~{s_fieldName: previousFieldValue}~'''
res = {}
for field in fields:
if not field.historized: continue
# appyType.historized can be a method or a boolean.
if callable(field.historized):
historized = field.callMethod(self, field.historized)
else:
historized = field.historized
if historized:
res[field.name] = field.getValue(self)
return res
def addHistoryEvent(self, action, **kw):
'''Adds an event in the object history.'''
user = self.getTool().getUser()
userId = user and user.login or 'system'
from DateTime import DateTime
event = {'action': action, 'actor': userId, 'time': DateTime(),
'comments': ''}
event.update(kw)
if 'review_state' not in event: event['review_state'] = self.State()
# Add the event to the history
histKey = self.workflow_history.keys()[0]
self.workflow_history[histKey] += (event,)
def addDataChange(self, changes, notForPreviouslyEmptyValues=False):
'''This method allows to add "manually" a data change into the objet's
history. Indeed, data changes are "automatically" recorded only when
a HTTP form is uploaded, not if, in the code, a setter is called on
a field. The method is also called by m_historizeData below, that
performs "automatic" recording when a HTTP form is uploaded. Field
changes for which the previous value was empty are not recorded into
the history if p_notForPreviouslyEmptyValues is True.'''
# Add to the p_changes dict the field labels
for fieldName in changes.keys():
appyType = self.getAppyType(fieldName)
if notForPreviouslyEmptyValues and \
appyType.isEmptyValue(changes[fieldName], self):
del changes[fieldName]
else:
changes[fieldName] = (changes[fieldName], appyType.labelId)
# Add an event in the history
self.addHistoryEvent('_datachange_', changes=changes)
def historizeData(self, previousData):
'''Records in the object history potential changes on historized fields.
p_previousData contains the values, before an update, of the
historized fields, while p_self already contains the (potentially)
modified values.'''
# Remove from previousData all values that were not changed
for field in previousData.keys():
prev = previousData[field]
appyType = self.getAppyType(field)
curr = appyType.getValue(self)
try:
if (prev == curr) or ((prev == None) and (curr == '')) or \
((prev == '') and (curr == None)):
del previousData[field]
except UnicodeDecodeError, ude:
# The string comparisons above may imply silent encoding-related
# conversions that may produce this exception.
pass
if (appyType.type == 'Ref') and (field in previousData):
previousData[field] = [r.title for r in previousData[field]]
if previousData:
self.addDataChange(previousData)
def goto(self, url, msg=None):
'''Brings the user to some p_url after an action has been executed.'''
if msg: self.say(msg)
return self.REQUEST.RESPONSE.redirect(url)
def gotoEdit(self):
'''Brings the user to the edit page for this object. This method takes
care of not carrying any password value. Unlike m_goto above, there
is no HTTP redirect here: we execute directly PX "edit" and we
return the result.'''
page = self.REQUEST.get('page', 'main')
for field in self.getAppyTypes('edit', page):
if (field.type == 'String') and (field.format in (3,4)):
self.REQUEST.set(field.name, '')
return self.edit()
def showField(self, name, layoutType='view'):
'''Must I show field named p_name on this p_layoutType ?'''
return self.getAppyType(name).isShowable(self, layoutType)
def getMethod(self, methodName):
'''Returns the method named p_methodName.'''
# If I write "self.aq_base" instead of self, acquisition will be
# broken on returned object.
return getattr(self, methodName, None)
def getCreateFolder(self):
'''When an object must be created from this one through a Ref field, we
must know where to put the newly create object: within this one if it
is folderish, besides this one in its parent else.
'''
if self.isPrincipiaFolderish: return self
return self.getParentNode()
def getFieldValue(self, name, onlyIfSync=False, layoutType=None,
outerValue=None):
'''Returns the database value of field named p_name for p_self.
If p_onlyIfSync is True, it returns the value only if appyType can be
retrieved in synchronous mode.'''
appyType = self.getAppyType(name)
if not onlyIfSync or (onlyIfSync and appyType.sync[layoutType]):
# We must really get the field value.
if '*' not in name: return appyType.getValue(self)
# The field is an inner field from a List.
listName, name, i = name.split('*')
listType = self.getAppyType(listName)
return listType.getInnerValue(outerValue, name, int(i))
def getFormattedFieldValue(self, name, value, showChanges=False):
'''Gets a nice, string representation of p_value which is a value from
field named p_name.'''
return self.getAppyType(name).getFormattedValue(self,value,showChanges)
def getRequestFieldValue(self, name):
'''Gets the value of field p_name as may be present in the request.'''
# Return the request value for standard fields.
if '*' not in name:
return self.getAppyType(name).getRequestValue(self.REQUEST)
# For sub-fields within Lists, the corresponding request values have
# already been computed in the request key corresponding to the whole
# List.
listName, name, rowIndex = name.split('*')
rowIndex = int(rowIndex)
if rowIndex == -1: return ''
allValues = self.REQUEST.get(listName)
if not allValues: return ''
return getattr(allValues[rowIndex], name, '')
def isDebug(self):
'''Are we in debug mode ?'''
for arg in sys.argv:
if arg == 'debug-mode=on': return True
def getClass(self, reloaded=False):
'''Returns the Appy class that dictates self's behaviour.'''
if not reloaded:
return self.getTool().getAppyClass(self.__class__.__name__)
else:
klass = self.appy().klass
moduleName = klass.__module__
exec 'import %s' % moduleName
exec 'reload(%s)' % moduleName
exec 'res = %s.%s' % (moduleName, klass.__name__)
# More manipulations may have occurred in m_update
if hasattr(res, 'update'):
parentName= res.__bases__[-1].__name__
moduleName= 'Products.%s.wrappers' % self.getTool().getAppName()
exec 'import %s' % moduleName
exec 'parent = %s.%s' % (moduleName, parentName)
res.update(parent)
return res
def getAppyType(self, name, className=None):
'''Returns the Appy type named p_name. If no p_className is defined, the
field is supposed to belong to self's class.'''
isInnerType = '*' in name # An inner type lies within a List type.
subName = None
if isInnerType:
elems = name.split('*')
if len(elems) == 2: name, subName = elems
else: name, subName, i = elems
if not className:
klass = self.__class__.wrapperClass
else:
klass = self.getTool().getAppyClass(className, wrapper=True)
res = getattr(klass, name, None)
if res and isInnerType: res = res.getField(subName)
return res
def getAllAppyTypes(self, className=None):
'''Returns the ordered list of all Appy types for self's class if
p_className is not specified, or for p_className else.'''
if not className:
klass = self.__class__.wrapperClass
else:
klass = self.getTool().getAppyClass(className, wrapper=True)
return klass.__fields__
def getGroupedFields(self, layoutType, pageName, cssJs=None):
'''Returns the fields sorted by group. If a dict is given in p_cssJs,
we will add it in the css and js files required by the fields.'''
res = []
groups = {} # The already encountered groups.
# If a dict is given in p_cssJs, we must fill it with the CSS and JS
# files required for every returned field.
collectCssJs = isinstance(cssJs, dict)
css = js = None
# If param "refresh" is there, we must reload the Python class
refresh = ('refresh' in self.REQUEST)
if refresh:
klass = self.getClass(reloaded=True)
for field in self.getAllAppyTypes():
if refresh: field = field.reload(klass, self)
if field.page.name != pageName: continue
if not field.isShowable(self, layoutType): continue
if collectCssJs:
if css == None: css = []
field.getCss(layoutType, css)
if js == None: js = []
field.getJs(layoutType, js)
if not field.group:
res.append(field)
else:
# Insert the UiGroup instance corresponding to field.group at
# the right place.
uiGroup = field.group.insertInto(res, groups, field.page,
self.meta_type)
uiGroup.addField(field)
if collectCssJs:
cssJs['css'] = css or ()
cssJs['js'] = js or ()
return res
def getAppyTypes(self, layoutType, pageName):
'''Returns the list of fields that belong to a given page (p_pageName)
for a given p_layoutType. If p_pageName is None, fields of all pages
are returned.'''
res = []
for field in self.getAllAppyTypes():
if pageName and (field.page.name != pageName): continue
if not field.isShowable(self, layoutType): continue
res.append(field)
return res
def getCssJs(self, fields, layoutType, res):
'''Gets, in p_res ~{'css':[s_css], 'js':[s_js]}~ the lists of
Javascript and CSS files required by Appy types p_fields when shown
on p_layoutType.'''
# Lists css and js below are not sets, because order of Javascript
# inclusion can be important, and this could be losed by using sets.
css = []
js = []
for field in fields:
field.getCss(layoutType, css)
field.getJs(layoutType, js)
res['css'] = css
res['js'] = js
def getCssFor(self, elem):
'''Gets the name of the CSS class to use for styling some p_elem. If
self's class does not define a dict "styles", the defaut CSS class
to use will be named p_elem.'''
klass = self.getClass()
if hasattr(klass, 'styles') and (elem in klass.styles):
return klass.styles[elem]
return elem
def getTransitions(self, includeFake=True, includeNotShowable=False):
'''This method returns info about transitions that one can trigger from
the user interface.
* if p_includeFake is True, it retrieves transitions that the user
can't trigger, but for which he needs to know for what reason he
can't trigger it;
* if p_includeNotShowable is True, it includes transitions for which
show=False. Indeed, because "showability" is only a GUI concern,
and not a security concern, in some cases it has sense to set
includeNotShowable=True, because those transitions are triggerable
from a security point of view.
'''
res = []
wf = self.getWorkflow()
currentState = self.State(name=False)
# Loop on every transition
for name in dir(wf):
transition = getattr(wf, name)
if (transition.__class__.__name__ != 'Transition'): continue
# Filter transitions that do not have currentState as start state
if not transition.hasState(currentState, True): continue
# Check if the transition can be triggered
mayTrigger = transition.isTriggerable(self, wf)
# Compute the condition that will lead to including or not this
# transition
if not includeFake:
includeIt = mayTrigger
else:
includeIt = mayTrigger or isinstance(mayTrigger, gen.No)
if not includeNotShowable:
includeIt = includeIt and transition.isShowable(wf, self)
if not includeIt: continue
# Add transition-info to the result.
label = self.getWorkflowLabel(name)
tInfo = {'name': name, 'title': self.translate(label),
'confirm': '', 'may_trigger': True}
if transition.confirm:
cLabel = '%s_confirm' % label
tInfo['confirm'] = self.translate(cLabel)
if not mayTrigger:
tInfo['may_trigger'] = False
tInfo['reason'] = mayTrigger.msg
res.append(tInfo)
return res
def getAppyPhases(self, currentOnly=False, layoutType='view'):
'''Gets the list of phases that are defined for this content type. If
p_currentOnly is True, the search is limited to the phase where the
current page (as defined in the request) lies.'''
# Get the list of phases
res = [] # Ordered list of phases
phases = {} # Dict of phases
for field in self.getAllAppyTypes():
fieldPhase = field.page.phase
if fieldPhase not in phases:
phase = gen.Phase(fieldPhase, self)
res.append(phase)
phases[fieldPhase] = phase
else:
phase = phases[fieldPhase]
phase.addPage(field, self, layoutType)
if (field.type == 'Ref') and field.navigable:
phase.addPageLinks(field, self)
# Remove phases that have no visible page
for i in range(len(res)-1, -1, -1):
if not res[i].pages:
del phases[res[i].name]
del res[i]
# Compute next/previous phases of every phase
for ph in phases.itervalues():
ph.computeNextPrevious(res)
ph.totalNbOfPhases = len(res)
# Restrict the result to the current phase if required
if currentOnly:
rq = self.REQUEST
page = rq.get('page', None)
if not page:
if layoutType == 'edit': page = self.getDefaultEditPage()
else: page = self.getDefaultViewPage()
for phase in res:
if page in phase.pages:
return phase
# If I am here, it means that the page as defined in the request,
# or the default page, is not existing nor visible in any phase.
# In this case I find the first visible page among all phases.
viewAttr = 'showOn%s' % layoutType.capitalize()
for phase in res:
for page in phase.pages:
if getattr(phase.pagesInfo[page], viewAttr):
rq.set('page', page)
pageFound = True
break
return phase
else:
# Return an empty list if we have a single, link-free page within
# a single phase.
if (len(res) == 1) and (len(res[0].pages) == 1) and \
not res[0].pagesInfo[res[0].pages[0]].links:
return
return res
def getSupTitle(self, navInfo=''):
'''Gets the html code (icons,...) that can be shown besides the title
of an object.'''
appyObj = self.appy()
if hasattr(appyObj, 'getSupTitle'): return appyObj.getSupTitle(navInfo)
return ''
def getSubTitle(self):
'''Gets the content that must appear below the title of an object.'''
appyObj = self.appy()
if hasattr(appyObj, 'getSubTitle'): return appyObj.getSubTitle()
return ''
def notifyWorkflowCreated(self):
'''This method is called every time an object is created, be it temp or
not. The objective here is to initialise workflow-related data on
the object.'''
wf = self.getWorkflow()
# Get the initial workflow state
initialState = self.State(name=False)
# Create a Transition instance representing the initial transition.
initialTransition = gen.Transition((initialState, initialState))
initialTransition.trigger('_init_', self, wf, '')
def getWorkflow(self, name=False, className=None):
'''Returns the workflow applicable for p_self (or for any instance of
p_className if given), or its name, if p_name is True.'''
if not className:
wrapperClass = self.wrapperClass
else:
wrapperClass = self.getTool().getAppyClass(className, wrapper=True)
wf = wrapperClass.getWorkflow()
if not name: return wf
return WorkflowDescriptor.getWorkflowName(wf)
def getWorkflowLabel(self, stateName=None):
'''Gets the i18n label for p_stateName, or for the current object state
if p_stateName is not given. Note that if p_stateName is given, it
can also represent the name of a transition.'''
stateName = stateName or self.State()
return '%s_%s' % (self.getWorkflow(name=True), stateName)
def applyUserIdChange(self, oldId, newId):
'''A user whose ID was p_oldId has now p_newId. If the old ID was
mentioned in self's local roles, update it to the new ID. This
method returns 1 if a change occurred, 0 else.'''
if oldId in self.__ac_local_roles__:
localRoles = self.__ac_local_roles__.copy()
localRoles[newId] = localRoles[oldId]
del localRoles[oldId]
self.__ac_local_roles__ = localRoles
self.reindex()
return 1
return 0
def findNewValue(self, field, history, stopIndex):
'''This function tries to find a more recent version of value of p_field
on p_self. It first tries to find it in history[:stopIndex+1]. If
it does not find it there, it returns the current value on p_obj.'''
i = stopIndex + 1
while (i-1) >= 0:
i -= 1
if history[i]['action'] != '_datachange_': continue
if field.name not in history[i]['changes']: continue
# We have found it!
return history[i]['changes'][field.name][0] or ''
return field.getValue(self) or ''
def getHistoryTexts(self, event):
'''Returns a tuple (insertText, deleteText) containing texts to show on,
respectively, inserted and deleted chunks of text in a XHTML diff.'''
tool = self.getTool()
userName = tool.getUserName(event['actor'])
mapping = {'userName': userName.decode('utf-8')}
res = []
for type in ('insert', 'delete'):
msg = self.translate('history_%s' % type, mapping=mapping)
date = tool.formatDate(event['time'], withHour=True)
msg = '%s: %s' % (date, msg)
res.append(msg.encode('utf-8'))
return res
def hasHistory(self, fieldName=None):
'''Has this object an history? If p_fieldName is specified, the question
becomes: has this object an history for field p_fieldName?'''
if hasattr(self.aq_base, 'workflow_history') and self.workflow_history:
history = self.workflow_history.values()[0]
if not fieldName:
for event in history:
if event['action'] and (event['comments'] != '_invisible_'):
return True
else:
for event in history:
if (event['action'] == '_datachange_') and \
(fieldName in event['changes']) and \
event['changes'][fieldName][0]: return True
def getHistory(self, startNumber=0, reverse=True, includeInvisible=False,
batchSize=5):
'''Returns the history for this object, sorted in reverse order (most
recent change first) if p_reverse is True.'''
# Get a copy of the history, reversed if needed, whose invisible events
# have been removed if needed.
key = self.workflow_history.keys()[0]
history = list(self.workflow_history[key][1:])
if not includeInvisible:
history = [e for e in history if e['comments'] != '_invisible_']
if reverse: history.reverse()
# Keep only events which are within the batch.
res = []
stopIndex = startNumber + batchSize - 1
i = -1
while (i+1) < len(history):
i += 1
# Ignore events outside range startNumber:startNumber+batchSize
if i < startNumber: continue
if i > stopIndex: break
if history[i]['action'] == '_datachange_':
# Take a copy of the event: we will modify it and replace
# fields' old values by their formatted counterparts.
event = history[i].copy()
event['changes'] = {}
for name, oldValue in history[i]['changes'].iteritems():
# oldValue is a tuple (value, fieldName).
field = self.getAppyType(name)
# Field 'name' may not exist, if the history has been
# transferred from another site. In this case we can't show
# this data change.
if not field: continue
if (field.type == 'String') and \
(field.format == gen.String.XHTML):
# For rich text fields, instead of simply showing the
# previous value, we propose a diff with the next
# version, excepted if the previous value is empty.
if field.isEmptyValue(oldValue[0]):
val = '-'
else:
newValue = self.findNewValue(field, history, i-1)
# Compute the diff between oldValue and newValue
iMsg, dMsg = self.getHistoryTexts(event)
comparator= HtmlDiff(oldValue[0],newValue,iMsg,dMsg)
val = comparator.get()
event['changes'][name] = (val, oldValue[1])
else:
val = field.getFormattedValue(self, oldValue[0]) or '-'
if isinstance(val, list) or isinstance(val, tuple):
val = '' % \
''.join(['%s' % v for v in val])
event['changes'][name] = (val, oldValue[1])
else:
event = history[i]
res.append(event)
return Object(events=res, totalNumber=len(history))
def mayNavigate(self):
'''May the currently logged user see the navigation panel linked to
this object?'''
appyObj = self.appy()
if hasattr(appyObj, 'mayNavigate'): return appyObj.mayNavigate()
return True
def getDefaultViewPage(self):
'''Which view page must be shown by default?'''
appyObj = self.appy()
if hasattr(appyObj, 'getDefaultViewPage'):
return appyObj.getDefaultViewPage()
return 'main'
def getDefaultEditPage(self):
'''Which edit page must be shown by default?'''
appyObj = self.appy()
if hasattr(appyObj, 'getDefaultEditPage'):
return appyObj.getDefaultEditPage()
return 'main'
def mayAct(self):
'''May the currently logged user see column "actions" for this
object? This can be used for hiding the "edit" icon, for example:
when a user may edit only a restricted set of fields on an object,
we may avoid showing him the global "edit" icon.'''
appyObj = self.appy()
if hasattr(appyObj, 'mayAct'): return appyObj.mayAct()
return True
def mayDelete(self):
'''May the currently logged user delete this object?'''
res = self.allows('delete')
if not res: return
# An additional, user-defined condition, may refine the base permission.
appyObj = self.appy()
if hasattr(appyObj, 'mayDelete'): return appyObj.mayDelete()
return True
def mayEdit(self, permission='write'):
'''May the currently logged user edit this object? p_perm can be a
field-specific permission.'''
res = self.allows(permission)
if not res: return
# An additional, user-defined condition, may refine the base permission.
appyObj = self.appy()
if hasattr(appyObj, 'mayEdit'): return appyObj.mayEdit()
return True
def executeAppyAction(self, actionName, reindex=True):
'''Executes action with p_fieldName on this object.'''
appyType = self.getAppyType(actionName)
actionRes = appyType(self.appy())
parent = self.getParentNode()
parentAq = getattr(parent, 'aq_base', parent)
if not hasattr(parentAq, self.id):
# Else, it means that the action has led to self's deletion.
self.reindex()
return appyType.result, actionRes
def onExecuteAppyAction(self):
'''This method is called every time a user wants to execute an Appy
action on an object.'''
rq = self.REQUEST
resultType, actionResult = self.executeAppyAction(rq['fieldName'])
successfull, msg = actionResult
if not msg:
# Use the default i18n messages
suffix = 'ko'
if successfull: suffix = 'ok'
msg = self.translate('action_%s' % suffix)
if (resultType == 'computation') or not successfull:
self.say(msg)
return self.goto(self.getUrl(rq['HTTP_REFERER']))
elif resultType.startswith('file'):
# msg does not contain a message, but a file instance.
response = self.REQUEST.RESPONSE
response.setHeader('Content-Type', getMimeType(msg.name))
response.setHeader('Content-Disposition', 'inline;filename="%s"' %\
os.path.basename(msg.name))
response.write(msg.read())
msg.close()
if resultType == 'filetmp':
# p_msg is a temp file. We need to delete it.
try:
os.remove(msg.name)
self.log('Temp file "%s" was deleted.' % msg.name)
except IOError, err:
self.log('Could not remove temp "%s" (%s).' % \
(msg.name, str(err)), type='warning')
except OSError, err:
self.log('Could not remove temp "%s" (%s).' % \
(msg.name, str(err)), type='warning')
elif resultType == 'redirect':
# msg does not contain a message, but the URL where to redirect
# the user.
return self.goto(msg)
def trigger(self, transitionName, comment='', doAction=True, doNotify=True,
doHistory=True, doSay=True, noSecurity=False):
'''Triggers transition named p_transitionName.'''
# Check that this transition exists.
wf = self.getWorkflow()
if not hasattr(wf, transitionName) or \
getattr(wf, transitionName).__class__.__name__ != 'Transition':
raise 'Transition "%s" was not found.' % transitionName
# Is this transition triggerable?
transition = getattr(wf, transitionName)
if not transition.isTriggerable(self, wf, noSecurity=noSecurity):
raise 'Transition "%s" can\'t be triggered.' % transitionName
# Trigger the transition
transition.trigger(transitionName, self, wf, comment, doAction=doAction,
doNotify=doNotify, doHistory=doHistory, doSay=doSay)
def onTrigger(self):
'''This method is called whenever a user wants to trigger a workflow
transition on an object.'''
rq = self.REQUEST
self.trigger(rq['workflow_action'], comment=rq.get('comment', ''))
self.reindex()
return self.goto(self.getUrl(rq['HTTP_REFERER']))
def getRolesFor(self, permission):
'''Gets, according to the workflow, the roles that are currently granted
p_permission on this object.'''
state = self.State(name=False)
roles = state.permissions[permission]
if roles: return [role.name for role in roles]
return ()
def appy(self):
'''Returns a wrapper object allowing to manipulate p_self the Appy
way.'''
# Create the dict for storing Appy wrapper on the REQUEST if needed.
rq = getattr(self, 'REQUEST', None)
if not rq:
# We are in test mode or Zope is starting. Use static variable
# config.fakeRequest instead.
rq = self.getProductConfig().fakeRequest
if not hasattr(rq, 'wrappers'): rq.wrappers = {}
# Return the Appy wrapper if already present in the cache
uid = self.UID()
if uid in rq.wrappers: return rq.wrappers[uid]
# Create the Appy wrapper, cache it in rq.wrappers and return it
wrapper = self.wrapperClass(self)
rq.wrappers[uid] = wrapper
return wrapper
# --------------------------------------------------------------------------
# Methods for computing values of standard Appy indexes
# --------------------------------------------------------------------------
def UID(self):
'''Returns the unique identifier for this object.'''
return self._at_uid
def Title(self):
'''Returns the title for this object.'''
title = self.getAppyType('title')
if title: return title.getValue(self)
return self.id
def SortableTitle(self):
'''Returns the title as must be stored in index "SortableTitle".'''
return normalizeText(self.Title())
def SearchableText(self):
'''This method concatenates the content of every field with
searchable=True for indexing purposes.'''
res = []
for field in self.getAllAppyTypes():
if not field.searchable: continue
res.append(field.getIndexValue(self, forSearch=True))
return res
def Creator(self):
'''Who create this object?'''
return self.creator
def Created(self):
'''When was this object created ?'''
return self.created
def Modified(self):
'''When was this object last modified ?'''
if hasattr(self.aq_base, 'modified'): return self.modified
return self.created
def State(self, name=True, initial=False):
'''Returns information about the current object state. If p_name is
True, the returned info is the state name. Else, it is the State
instance. If p_initial is True, instead of returning info about the
current state, it returns info about the workflow initial state.'''
wf = self.getWorkflow()
if initial or not hasattr(self.aq_base, 'workflow_history'):
# No workflow information is available (yet) on this object, or
# initial state is asked. In both cases, return info about this
# initial state.
res = 'active'
for elem in dir(wf):
attr = getattr(wf, elem)
if (attr.__class__.__name__ == 'State') and attr.initial:
res = elem
break
else:
# Return info about the current object state
key = self.workflow_history.keys()[0]
res = self.workflow_history[key][-1]['review_state']
# Return state name or state definition?
if name: return res
else: return getattr(wf, res)
def ClassName(self):
'''Returns the name of the (Zope) class for self.'''
return self.portal_type
def Allowed(self):
'''Returns the list of roles and users that are allowed to view this
object. This index value will be used within catalog queries for
filtering objects the user is allowed to see.'''
# Get, from the workflow, roles having permission 'read'.
res = self.getRolesFor('read')
# Add users or groups having, locally, this role on this object.
localRoles = getattr(self.aq_base, '__ac_local_roles__', None)
if not localRoles: return res
for id, roles in localRoles.iteritems():
for role in roles:
if role in res:
usr = 'user:%s' % id
if usr not in res: res.append(usr)
return res
def showState(self):
'''Must I show self's current state ?'''
stateShow = self.State(name=False).show
if callable(stateShow):
return stateShow(self.getWorkflow(), self.appy())
return stateShow
def showTransitions(self, layoutType):
'''Must we show the buttons/icons for triggering transitions on
p_layoutType?'''
# Never show transitions on edit pages.
if layoutType == 'edit': return
# Use the default value if self's class does not specify it.
klass = self.getClass()
if not hasattr(klass, 'showTransitions'): return (layoutType=='view')
showValue = klass.showTransitions
# This value can be a single value or a tuple/list of values.
if isinstance(showValue, basestring): return layoutType == showValue
return layoutType in showValue
getUrlDefaults = {'page':True, 'nav':True}
def getUrl(self, base=None, mode='view', **kwargs):
'''Returns an URL for this object.
* If p_base is None, it will be the base URL for this object
(ie, Zope self.absolute_url()).
* p_mode can be "edit", "view" or "raw" (a non-param, base URL)
* p_kwargs can store additional parameters to add to the URL.
In this dict, every value that is a string will be added to the
URL as-is. Every value that is True will be replaced by the value
in the request for the corresponding key (if existing; else, the
param will not be included in the URL at all).'''
# Define the URL suffix
suffix = ''
if mode != 'raw': suffix = '/%s' % mode
# Define base URL if omitted
if not base:
base = self.absolute_url() + suffix
# If a raw URL is asked, remove any param and suffix.
if mode == 'raw':
if '?' in base: base = base[:base.index('?')]
base = base.strip('/')
for mode in ('view', 'edit'):
if base.endswith(mode):
base = base[:-len(mode)].strip('/')
break
return base
# Manage default args
if not kwargs: kwargs = self.getUrlDefaults
if 'page' not in kwargs: kwargs['page'] = True
if 'nav' not in kwargs: kwargs['nav'] = True
# Create URL parameters from kwargs
params = []
for name, value in kwargs.iteritems():
if isinstance(value, basestring):
params.append('%s=%s' % (name, value))
elif self.REQUEST.get(name, ''):
params.append('%s=%s' % (name, self.REQUEST[name]))
if params:
params = '&'.join(params)
if base.find('?') != -1: params = '&' + params
else: params = '?' + params
else:
params = ''
return '%s%s' % (base, params)
def getTool(self):
'''Returns the application tool.'''
return self.getPhysicalRoot().config
def getProductConfig(self, app=False):
'''Returns a reference to the config module. If p_app is True, it
returns the application config.'''
res = self.__class__.config
if app: res = res.appConfig
return res
def getParent(self):
'''If this object is stored within another one, this method returns it.
Else (if the object is stored directly within the tool or the root
data folder) it returns None.'''
parent = self.getParentNode()
# Not-Managers can't navigate back to the tool
if (parent.id == 'config') and \
not self.getTool().getUser().has_role('Manager'):
return False
if parent.meta_type not in ('Folder', 'Temporary Folder'): return parent
def getBreadCrumb(self):
'''Gets breadcrumb info about this object and its parents (if it must
be shown).'''
# Return an empty breadcrumb if it must not be shown.
klass = self.getClass()
if hasattr(klass, 'breadcrumb') and not klass.breadcrumb: return ()
# Compute the breadcrumb
res = [Object(url=self.absolute_url(),
title=self.getFieldValue('title', layoutType='view'))]
parent = self.getParent()
if parent:
res = parent.getBreadCrumb() + res
return res
def index_html(self):
'''Redirects to /view.'''
rq = self.REQUEST
if rq.has_key('do'):
# The user wants to call a method on this object and get its result
# as XML.
return self.xml(action=rq['do'])
else:
# The user wants to consult the view page for this object
return rq.RESPONSE.redirect(self.getUrl())
def getUserLanguage(self):
'''Gets the language (code) of the current user.'''
if not hasattr(self, 'REQUEST'): return 'en'
# Try the value which comes from the cookie. Indeed, if such a cookie is
# present, it means that the user has explicitly chosen this language
# via the language selector.
rq = self.REQUEST
if '_ZopeLg' in rq.cookies: return rq.cookies['_ZopeLg']
# Try the LANGUAGE key from the request: it corresponds to the language
# as configured in the user's browser.
res = self.REQUEST.get('LANGUAGE', None)
if res: return res
# Try the HTTP_ACCEPT_LANGUAGE key from the request, which stores
# language preferences as defined in the user's browser. Several
# languages can be listed, from most to less wanted.
res = self.REQUEST.get('HTTP_ACCEPT_LANGUAGE', None)
if not res: return 'en'
if ',' in res: res = res[:res.find(',')]
if '-' in res: res = res[:res.find('-')]
return res
def getLanguageDirection(self, lang):
'''Determines if p_lang is a LTR or RTL language.'''
if lang in rtlLanguages: return 'rtl'
return 'ltr'
def formatText(self, text, format='html'):
'''Produces a representation of p_text into the desired p_format, which
is "html" by default.'''
if 'html' in format:
if format == 'html_from_text': text = cgi.escape(text)
res = text.replace('\r\n', '
').replace('\n', '
')
elif format == 'text':
res = text.replace('
', '\n')
else:
res = text
return res
def translate(self, label, mapping={}, domain=None, default=None,
language=None, format='html', field=None):
'''Translates a given p_label into p_domain with p_mapping.
If p_field is given, p_label does not correspond to a full label
name, but to a label type linked to p_field: "label", "descr"
or "help". Indeed, in this case, a specific i18n mapping may be
available on the field, so we must merge this mapping into
p_mapping.'''
cfg = self.getProductConfig()
if not domain: domain = cfg.PROJECTNAME
# Get the label name, and the field-specific mapping if any.
if field:
if field.type != 'group':
fieldMapping = field.mapping[label]
if fieldMapping:
if callable(fieldMapping):
fieldMapping = field.callMethod(self, fieldMapping)
mapping.update(fieldMapping)
label = getattr(field, '%sId' % label)
# We will get the translation from a Translation object.
# In what language must we get the translation?
if not language: language = self.getUserLanguage()
tool = self.getTool()
try:
translation = getattr(tool, language).appy()
except AttributeError:
# We have no translation for this language. Fallback to 'en'.
translation = getattr(tool, 'en').appy()
res = getattr(translation, label, '')
if not res:
# Fallback to 'en'.
translation = getattr(tool, 'en').appy()
res = getattr(translation, label, '')
# If still no result, put the label instead of a translated message
if not res: res = label
else:
# Perform replacements, according to p_format.
res = self.formatText(res, format)
# Perform variable replacements
for name, repl in mapping.iteritems():
if not isinstance(repl, basestring): repl = str(repl)
res = res.replace('${%s}' % name, repl)
return res
def getPageLayout(self, layoutType):
'''Returns the layout corresponding to p_layoutType for p_self.'''
appyClass = self.wrapperClass.__bases__[-1]
if hasattr(appyClass, 'layouts'):
layout = appyClass.layouts[layoutType]
if isinstance(layout, basestring):
layout = Table(layout)
else:
layout = defaultPageLayouts[layoutType]
return layout
def download(self, name=None):
'''Downloads the content of the file that is in the File field whose
name is in the request. This name can also represent an attribute
storing an image within a rich text field. If p_name is not given, it
is retrieved from the request.'''
name = self.REQUEST.get('name')
if not name: return
if '_img_' not in name:
appyType = self.getAppyType(name)
else:
appyType = self.getAppyType(name.split('_img_')[0])
if (not appyType.isShowable(self, 'view')) and \
(not appyType.isShowable(self, 'result')):
from zExceptions import NotFound
raise NotFound()
theFile = getattr(self.aq_base, name, None)
if theFile:
response = self.REQUEST.RESPONSE
response.setHeader('Content-Disposition', 'inline;filename="%s"' % \
theFile.filename)
# Define content type
if theFile.content_type:
response.setHeader('Content-Type', theFile.content_type)
response.setHeader('Cachecontrol', 'no-cache')
response.setHeader('Expires', 'Thu, 11 Dec 1975 12:05:05 GMT')
return theFile.index_html(self.REQUEST, self.REQUEST.RESPONSE)
def upload(self):
'''Receives an image uploaded by the user via ckeditor and stores it in
a special field on this object.'''
# Get the name of the rich text field for which an image must be stored.
params = self.REQUEST['QUERY_STRING'].split('&')
fieldName = params[0].split('=')[1]
ckNum = params[1].split('=')[1]
# We will store the image in a field named [fieldName]_img_[nb].
i = 1
attrName = '%s_img_%d' % (fieldName, i)
while True:
if not hasattr(self.aq_base, attrName):
break
else:
i += 1
attrName = '%s_img_%d' % (fieldName, i)
# Store the image. Create a fake File instance for doing the job.
fakeFile = gen.File(isImage=True)
fakeFile.name = attrName
fakeFile.store(self, self.REQUEST['upload'])
# Return the URL of the image.
url = '%s/download?name=%s' % (self.absolute_url(), attrName)
response = self.REQUEST.RESPONSE
response.setHeader('Content-Type', 'text/html')
resp = "" % (ckNum, url)
response.write(resp)
def allows(self, permission, raiseError=False):
'''Has the logged user p_permission on p_self ?'''
res = self.getTool().getUser().has_permission(permission, self)
if not res and raiseError:
from AccessControl import Unauthorized
raise Unauthorized
return res
def isTemporary(self):
'''Is this object temporary ?'''
parent = self.getParentNode()
if not parent: # Is propably being created through code
return False
return parent.getId() == 'temp_folder'
def onProcess(self):
'''This method is a general hook for transfering processing of a request
to a given field, whose name must be in the request.'''
return self.getAppyType(self.REQUEST['name']).process(self)
# ------------------------------------------------------------------------------