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[gen] Ref.linkObject and unlinkObject (and caller methods like wrapper.create) can now be called with attr 'executeMethods' being False: in this case, all methods defined in attrs like 'insert', 'beforelink', 'afterLink' will not be called. Can be useful while migrating data or duplicating objects.

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This commit is contained in:
Gaetan Delannay 2014-09-29 10:06:40 +02:00
parent 1d81dc768b
commit abe56a5add
4 changed files with 72 additions and 50 deletions
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43
fields/ref.py
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@ -982,15 +982,25 @@ class Ref(Field):
elif nbOfRefs > maxRef:
return obj.translate('max_ref_violated')
def linkObject(self, obj, value, back=False, noSecurity=True):
def linkObject(self, obj, value, back=False, noSecurity=True,
executeMethods=True):
'''This method links p_value (which can be a list of objects) to p_obj
through this Ref field.'''
through this Ref field. When linking 2 objects via a Ref,
p_linkObject must be called twice: once on the forward Ref and once
on the backward ref. p_back indicates if we are calling it on the
forward or backward Ref. If p_noSecurity is True, we bypass security
checks (has the logged user the right to modify this Ref field?).
If p_executeMethods is False, we do not execute methods that
customize the object insertion (parameters insert, beforeLink,
afterLink...). This can be useful while migrating data or duplicating
an object.'''
zobj = obj.o
# Security check
if not noSecurity: zobj.mayEdit(self.writePermission, raiseError=True)
# p_value can be a list of objects
if type(value) in sutils.sequenceTypes:
for v in value: self.linkObject(obj, v, back=back)
for v in value:
self.linkObject(obj, v, back, noSecurity, executeMethods)
return
# Gets the list of referred objects (=list of uids), or create it.
refs = getattr(zobj.aq_base, self.name, None)
@ -1001,9 +1011,9 @@ class Ref(Field):
uid = value.o.id
if uid in refs: return
# Execute self.beforeLink if present
if self.beforeLink: self.beforeLink(obj, value)
if executeMethods and self.beforeLink: self.beforeLink(obj, value)
# Where must we insert the object?
if not self.insert:
if not self.insert or not executeMethods:
refs.append(uid)
elif self.insert == 'start':
refs.insert(0, uid)
@ -1032,21 +1042,27 @@ class Ref(Field):
tool.getObject(uid, appy=True)))
refs._p_changed = 1
# Execute self.afterLink if present
if self.afterLink: self.afterLink(obj, value)
if executeMethods and self.afterLink: self.afterLink(obj, value)
# Update the back reference
if not back: self.back.linkObject(value, obj, back=True)
if not back:
self.back.linkObject(value, obj, True, noSecurity, executeMethods)
def unlinkObject(self, obj, value, back=False, noSecurity=True):
def unlinkObject(self, obj, value, back=False, noSecurity=True,
executeMethods=True):
'''This method unlinks p_value (which can be a list of objects) from
p_obj through this Ref field.'''
p_obj through this Ref field. For an explanation about parameters
p_back, p_noSecurity and p_executeMethods, check m_linkObject's doc
above.'''
zobj = obj.o
# Security check
if not noSecurity:
zobj.mayEdit(self.writePermission, raiseError=True)
self.mayUnlinkElement(obj, value, raiseError=True)
if executeMethods:
self.mayUnlinkElement(obj, value, raiseError=True)
# p_value can be a list of objects
if type(value) in sutils.sequenceTypes:
for v in value: self.unlinkObject(obj, v, back=back)
for v in value:
self.unlinkObject(obj, v, back, noSecurity, executeMethods)
return
refs = getattr(zobj.aq_base, self.name, None)
if not refs: return
@ -1055,9 +1071,10 @@ class Ref(Field):
if uid in refs:
refs.remove(uid)
# Execute self.afterUnlink if present
if self.afterUnlink: self.afterUnlink(obj, value)
if executeMethods and self.afterUnlink: self.afterUnlink(obj, value)
# Update the back reference
if not back: self.back.unlinkObject(value, obj, back=True)
if not back:
self.back.unlinkObject(value,obj,True,noSecurity,executeMethods)
def store(self, obj, value):
'''Stores on p_obj, the p_value, which can be: