# -*- coding: utf-8; -*- ################################################################################ # # Rattail -- Retail Software Framework # Copyright © 2010-2023 Lance Edgar # # This file is part of Rattail. # # Rattail is free software: you can redistribute it and/or modify it under the # terms of the GNU General Public License as published by the Free Software # Foundation, either version 3 of the License, or (at your option) any later # version. # # Rattail is distributed in the hope that it will be useful, but WITHOUT ANY # WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS # FOR A PARTICULAR PURPOSE. See the GNU General Public License for more # details. # # You should have received a copy of the GNU General Public License along with # Rattail. If not, see . # ################################################################################ """ Forms Core """ import json import logging import warnings from collections import OrderedDict import sqlalchemy as sa from sqlalchemy import orm from sqlalchemy.ext.associationproxy import AssociationProxy, ASSOCIATION_PROXY from rattail.time import localtime from rattail.util import prettify, pretty_boolean, pretty_quantity from rattail.core import UNSPECIFIED from rattail.db.util import get_fieldnames import colander import deform from colanderalchemy import SQLAlchemySchemaNode from colanderalchemy.schema import _creation_order from deform import widget as dfwidget from pyramid_deform import SessionFileUploadTempStore from pyramid.renderers import render from webhelpers2.html import tags, HTML from tailbone.db import Session from tailbone.util import raw_datetime, get_form_data, render_markdown from . import types from .widgets import (ReadonlyWidget, PlainDateWidget, JQueryDateWidget, JQueryTimeWidget, MultiFileUploadWidget) from tailbone.exceptions import TailboneJSONFieldError log = logging.getLogger(__name__) def get_association_proxy(mapper, field): """ Returns the association proxy corresponding to the given field name if one exists, or ``None``. """ try: desc = getattr(mapper.all_orm_descriptors, field) except AttributeError: pass else: if desc.extension_type == ASSOCIATION_PROXY: return desc def get_association_proxy_target(inspector, field): """ Returns the property on the main class, which represents the "target" for the given association proxy field name. Typically this will refer to the "extension" model class. """ proxy = get_association_proxy(inspector, field) if proxy: proxy_target = inspector.get_property(proxy.target_collection) if isinstance(proxy_target, orm.RelationshipProperty) and not proxy_target.uselist: return proxy_target def get_association_proxy_column(inspector, field): """ Returns the property on the proxy target class, for the column which is reflected by the proxy. """ proxy_target = get_association_proxy_target(inspector, field) if proxy_target: if proxy_target.mapper.has_property(field): prop = proxy_target.mapper.get_property(field) if isinstance(prop, orm.ColumnProperty) and isinstance(prop.columns[0], sa.Column): return prop class CustomSchemaNode(SQLAlchemySchemaNode): def association_proxy(self, field): """ Returns the association proxy corresponding to the given field name if one exists, or ``None``. """ return get_association_proxy(self.inspector, field) def association_proxy_target(self, field): """ Returns the property on the main class, which represents the "target" for the given association proxy field name. Typically this will refer to the "extension" model class. """ return get_association_proxy_target(self.inspector, field) def association_proxy_column(self, field): """ Returns the property on the proxy target class, for the column which is reflected by the proxy. """ return get_association_proxy_column(self.inspector, field) def supported_association_proxy(self, field): """ Returns boolean indicating whether the association proxy corresponding to the given field name, is "supported" with typical logic. """ if not self.association_proxy_column(field): return False return True def add_nodes(self, includes, excludes, overrides): """ Add all automatic nodes to the schema. .. note:: This method was copied from upstream and modified to add automatic handling of "association proxy" fields. """ if set(excludes) & set(includes): msg = 'excludes and includes are mutually exclusive.' raise ValueError(msg) # sorted to maintain the order in which the attributes # are defined properties = sorted(self.inspector.attrs, key=_creation_order) if excludes: if includes: raise ValueError("Must pass includes *or* excludes, but not both") supported = [prop.key for prop in properties if prop.key not in excludes] elif includes: supported = includes elif includes is not None: supported = [] for name in supported: prop = self.inspector.attrs.get(name, name) if name in excludes or (includes and name not in includes): log.debug('Attribute %s skipped imperatively', name) continue name_overrides_copy = overrides.get(name, {}).copy() if (isinstance(prop, orm.ColumnProperty) and isinstance(prop.columns[0], sa.Column)): node = self.get_schema_from_column( prop, name_overrides_copy ) elif isinstance(prop, orm.RelationshipProperty): if prop.mapper.class_ in self.parents_ and name not in includes: continue node = self.get_schema_from_relationship( prop, name_overrides_copy ) elif isinstance(prop, colander.SchemaNode): node = prop else: # magic for association proxy fields column = self.association_proxy_column(name) if column: node = self.get_schema_from_column(column, name_overrides_copy) else: log.debug( 'Attribute %s skipped due to not being ' 'a ColumnProperty or RelationshipProperty', name ) continue if node is not None: self.add(node) def get_schema_from_relationship(self, prop, overrides): """ Build and return a :class:`colander.SchemaNode` for a relationship. """ # for some reason ColanderAlchemy wants to crawl our entire ORM by # default, by way of relationships. this 'excludes' hack is used to # prevent that, by forcing skip of 2nd-level relationships excludes = [] if isinstance(prop, orm.RelationshipProperty): for next_prop in prop.mapper.iterate_properties: # don't include secondary relationships if isinstance(next_prop, orm.RelationshipProperty): excludes.append(next_prop.key) # don't include fields of binary type elif isinstance(next_prop, orm.ColumnProperty): for column in next_prop.columns: if isinstance(column.type, sa.LargeBinary): excludes.append(next_prop.key) if excludes: overrides['excludes'] = excludes return super(CustomSchemaNode, self).get_schema_from_relationship(prop, overrides) def dictify(self, obj): """ Return a dictified version of `obj` using schema information. .. note:: This method was copied from upstream and modified to add automatic handling of "association proxy" fields. """ dict_ = super(CustomSchemaNode, self).dictify(obj) for node in self: name = node.name if name not in dict_: # we're only processing association proxy fields here if not self.supported_association_proxy(name): continue value = getattr(obj, name) if value is None: if isinstance(node.typ, colander.String): # colander has an issue with `None` on a String type # where it translates it into "None". Let's check # for that specific case and turn it into a # `colander.null`. dict_[name] = colander.null else: # A specific case this helps is with Integer where # `None` is an invalid value. We call serialize() # to test if we have a value that will work later # for serialization and then allow it if it doesn't # raise an exception. Hopefully this also catches # issues with user defined types and future issues. try: node.serialize(value) except: dict_[name] = colander.null else: dict_[name] = value else: dict_[name] = value return dict_ def objectify(self, dict_, context=None): """ Return an object representing ``dict_`` using schema information. .. note:: This method was copied from upstream and modified to add automatic handling of "association proxy" fields. """ mapper = self.inspector context = mapper.class_() if context is None else context for attr in dict_: if mapper.has_property(attr): prop = mapper.get_property(attr) if hasattr(prop, 'mapper'): cls = prop.mapper.class_ if prop.uselist: # Sequence of objects value = [self[attr].children[0].objectify(obj) for obj in dict_[attr]] else: # Single object value = self[attr].objectify(dict_[attr]) else: value = dict_[attr] if value is colander.null: # `colander.null` is never an appropriate # value to be placed on an SQLAlchemy object # so we translate it into `None`. value = None setattr(context, attr, value) else: # try to process association proxy field if self.supported_association_proxy(attr): value = dict_[attr] if value is colander.null: # `colander.null` is never an appropriate # value to be placed on an SQLAlchemy object # so we translate it into `None`. value = None setattr(context, attr, value) else: # Ignore attributes if they are not mapped log.debug( 'SQLAlchemySchemaNode.objectify: %s not found on ' '%s. This property has been ignored.', attr, self ) continue return context class Form(object): """ Base class for all forms. """ save_label = "Save" update_label = "Save" show_cancel = True auto_disable = True auto_disable_save = True auto_disable_cancel = True def __init__(self, fields=None, schema=None, request=None, readonly=False, readonly_fields=[], model_instance=None, model_class=None, appstruct=UNSPECIFIED, nodes={}, enums={}, labels={}, assume_local_times=False, renderers=None, renderer_kwargs={}, hidden={}, widgets={}, defaults={}, validators={}, required={}, helptext={}, focus_spec=None, action_url=None, cancel_url=None, component='tailbone-form', vuejs_component_kwargs=None, vuejs_field_converters={}, # TODO: ugh this is getting out hand! can_edit_help=False, edit_help_url=None, route_prefix=None, ): self.fields = None if fields is not None: self.set_fields(fields) self.schema = schema if self.fields is None and self.schema: self.set_fields([f.name for f in self.schema]) self.grouping = None self.request = request self.readonly = readonly self.readonly_fields = set(readonly_fields or []) self.model_instance = model_instance self.model_class = model_class if self.model_instance and not self.model_class and not isinstance(self.model_instance, dict): self.model_class = type(self.model_instance) if self.model_class and self.fields is None: self.set_fields(self.make_fields()) self.appstruct = appstruct self.nodes = nodes or {} self.enums = enums or {} self.labels = labels or {} self.assume_local_times = assume_local_times if renderers is None and self.model_class: self.renderers = self.make_renderers() else: self.renderers = renderers or {} self.renderer_kwargs = renderer_kwargs or {} self.hidden = hidden or {} self.widgets = widgets or {} self.defaults = defaults or {} self.validators = validators or {} self.required = required or {} self.helptext = helptext or {} self.dynamic_helptext = {} self.focus_spec = focus_spec self.action_url = action_url self.cancel_url = cancel_url self.component = component self.vuejs_component_kwargs = vuejs_component_kwargs or {} self.vuejs_field_converters = vuejs_field_converters or {} self.can_edit_help = can_edit_help self.edit_help_url = edit_help_url self.route_prefix = route_prefix def __iter__(self): return iter(self.fields) @property def component_studly(self): words = self.component.split('-') return ''.join([word.capitalize() for word in words]) def __contains__(self, item): return item in self.fields def set_fields(self, fields): self.fields = FieldList(fields) def make_fields(self): """ Return a default list of fields, based on :attr:`model_class`. """ if not self.model_class: raise ValueError("Must define model_class to use make_fields()") return get_fieldnames(self.request.rattail_config, self.model_class, columns=True, proxies=True, relations=True) def set_grouping(self, items): self.grouping = OrderedDict(items) def make_renderers(self): """ Return a default set of field renderers, based on :attr:`model_class`. """ if not self.model_class: raise ValueError("Must define model_class to use make_renderers()") inspector = sa.inspect(self.model_class) renderers = {} # TODO: clearly this should be leaner... # first look at regular column fields for prop in inspector.iterate_properties: if isinstance(prop, orm.ColumnProperty): if len(prop.columns) == 1: column = prop.columns[0] if isinstance(column.type, sa.DateTime): if self.assume_local_times: renderers[prop.key] = self.render_datetime_local else: renderers[prop.key] = self.render_datetime elif isinstance(column.type, sa.Boolean): renderers[prop.key] = self.render_boolean # then look at association proxy fields for key, desc in inspector.all_orm_descriptors.items(): if desc.extension_type == ASSOCIATION_PROXY: prop = get_association_proxy_column(inspector, key) if prop: column = prop.columns[0] if isinstance(column.type, sa.DateTime): renderers[key] = self.render_datetime elif isinstance(column.type, sa.Boolean): renderers[key] = self.render_boolean return renderers def append(self, field): self.fields.append(field) def insert(self, index, field): self.fields.insert(index, field) def insert_before(self, field, newfield): self.fields.insert_before(field, newfield) def insert_after(self, field, newfield): self.fields.insert_after(field, newfield) def replace(self, field, newfield): self.insert_after(field, newfield) self.remove(field) def remove(self, *args): for arg in args: if arg in self.fields: self.fields.remove(arg) # TODO: deprecare / remove this def remove_field(self, key): self.remove(key) # TODO: deprecare / remove this def remove_fields(self, *args): self.remove(*args) def make_schema(self): if not self.schema: if not self.model_class: # TODO raise NotImplementedError mapper = orm.class_mapper(self.model_class) # first filter our "full" field list so we ignore certain ones. in # particular we don't want readonly fields in the schema, or any # which appear to be "private" includes = [f for f in self.fields if f not in self.readonly_fields and not f.startswith('_') and f != 'versions'] # derive list of "auto included" fields. this is all "included" # fields which are part of the SQLAlchemy ORM for the object auto_includes = [] property_keys = [p.key for p in mapper.iterate_properties] inspector = sa.inspect(self.model_class) for field in includes: if field in self.nodes: continue # these are explicitly set; no magic wanted if field in property_keys: auto_includes.append(field) elif get_association_proxy(inspector, field): auto_includes.append(field) # make schema - only include *property* fields at this point schema = CustomSchemaNode(self.model_class, includes=auto_includes) # for now, must manually add any "extra" fields? this includes all # association proxy fields, not sure how other fields will behave for field in includes: if field not in schema: node = self.nodes.get(field) if not node: node = colander.SchemaNode(colander.String(), name=field, missing='') if not node.name: node.name = field schema.add(node) # apply any label overrides for key, label in self.labels.items(): if key in schema: schema[key].title = label # apply any widget overrides for key, widget in self.widgets.items(): if key in schema: schema[key].widget = widget # TODO: we are now doing this when making deform.Form, in which # case, do we still need to do it here? # apply any default values for key, default in self.defaults.items(): if key in schema: schema[key].default = default # apply any validators for key, validator in self.validators.items(): if key is None: # this one is form-wide schema.validator = validator elif key in schema: schema[key].validator = validator # apply required flags for key, required in self.required.items(): if key in schema: if required: schema[key].missing = colander.required else: schema[key].missing = None # TODO? self.schema = schema return self.schema def set_label(self, key, label): self.labels[key] = label # update schema if necessary if self.schema and key in self.schema: self.schema[key].title = label def get_label(self, key): return self.labels.get(key, prettify(key)) def set_readonly(self, key, readonly=True): if readonly: self.readonly_fields.add(key) else: if key in self.readonly_fields: self.readonly_fields.remove(key) def set_node(self, key, nodeinfo, **kwargs): if isinstance(nodeinfo, colander.SchemaNode): node = nodeinfo else: kwargs.setdefault('name', key) node = colander.SchemaNode(nodeinfo, **kwargs) self.nodes[key] = node # must explicitly replace node, if we already have a schema if self.schema: self.schema[key] = node def set_type(self, key, type_, **kwargs): if type_ == 'datetime': self.set_renderer(key, self.render_datetime) elif type_ == 'datetime_local': self.set_renderer(key, self.render_datetime_local) elif type_ == 'date_plain': self.set_widget(key, PlainDateWidget()) elif type_ == 'date_jquery': # TODO: is this safe / a good idea? # self.set_node(key, colander.Date()) self.set_widget(key, JQueryDateWidget()) elif type_ == 'time_jquery': self.set_node(key, types.JQueryTime()) self.set_widget(key, JQueryTimeWidget()) elif type_ == 'duration': self.set_renderer(key, self.render_duration) elif type_ == 'boolean': self.set_renderer(key, self.render_boolean) self.set_widget(key, dfwidget.CheckboxWidget()) elif type_ == 'currency': self.set_renderer(key, self.render_currency) elif type_ == 'quantity': self.set_renderer(key, self.render_quantity) elif type_ == 'percent': self.set_renderer(key, self.render_percent) elif type_ == 'gpc': self.set_renderer(key, self.render_gpc) elif type_ == 'enum': self.set_renderer(key, self.render_enum) elif type_ == 'codeblock': self.set_renderer(key, self.render_codeblock) self.set_widget(key, dfwidget.TextAreaWidget(cols=80, rows=8)) elif type_ == 'text': self.set_renderer(key, self.render_pre_sans_serif) self.set_widget(key, dfwidget.TextAreaWidget(cols=80, rows=8)) elif type_ == 'text_wrapped': self.set_renderer(key, self.render_pre_sans_serif_wrapped) self.set_widget(key, dfwidget.TextAreaWidget(cols=80, rows=8)) elif type_ == 'file': tmpstore = SessionFileUploadTempStore(self.request) kw = {'widget': dfwidget.FileUploadWidget(tmpstore), 'title': self.get_label(key)} if 'required' in kwargs and not kwargs['required']: kw['missing'] = colander.null self.set_node(key, colander.SchemaNode(deform.FileData(), **kw)) elif type_ == 'multi_file': tmpstore = SessionFileUploadTempStore(self.request) file_node = colander.SchemaNode(deform.FileData(), name='upload') kw = {'name': key, 'title': self.get_label(key), 'widget': MultiFileUploadWidget(tmpstore)} # if 'required' in kwargs and not kwargs['required']: # kw['missing'] = colander.null files_node = colander.SequenceSchema(file_node, **kw) self.set_node(key, files_node) else: raise ValueError("unknown type for '{}' field: {}".format(key, type_)) def set_enum(self, key, enum, empty=None): if enum: self.enums[key] = enum self.set_type(key, 'enum') values = list(enum.items()) if empty: values.insert(0, empty) self.set_widget(key, dfwidget.SelectWidget(values=values)) else: self.enums.pop(key, None) def get_enum(self, key): return self.enums.get(key) # TODO: i don't think this is actually being used anywhere..? def set_enum_value(self, key, enum_key, enum_value): enum = self.enums.get(key) if enum: enum[enum_key] = enum_value def set_renderer(self, key, renderer): if renderer is None: if key in self.renderers: del self.renderers[key] else: self.renderers[key] = renderer def add_renderer_kwargs(self, key, kwargs): self.renderer_kwargs.setdefault(key, {}).update(kwargs) def get_renderer_kwargs(self, key): return self.renderer_kwargs.get(key, {}) def set_renderer_kwargs(self, key, kwargs): self.renderer_kwargs[key] = kwargs def set_input_handler(self, key, value): """ Convenience method to assign "input handler" callback code for the given field. """ self.add_renderer_kwargs(key, {'input_handler': value}) def set_hidden(self, key, hidden=True): self.hidden[key] = hidden def set_widget(self, key, widget): self.widgets[key] = widget # update schema if necessary if self.schema and key in self.schema: self.schema[key].widget = widget def set_validator(self, key, validator): """ Set the validator for the schema node represented by the given key. :param key: Normally this the name of one of the fields contained in the form. It can also be ``None`` in which case the validator pertains to the form at large instead of one of the fields. TODO: what should the validator look like? :param validator: Callable validator for the node. """ self.validators[key] = validator # we normally apply the validator when creating the schema, so # if this form already has a schema, then go ahead and apply # the validator to it if self.schema and key in self.schema: self.schema[key].validator = validator def set_required(self, key, required=True): """ Set whether or not value is required for a given field. """ self.required[key] = required def set_default(self, key, value): """ Set the default value for a given field. """ self.defaults[key] = value def set_helptext(self, key, value, dynamic=False): """ Set the help text for a given field. """ self.helptext[key] = value if value and dynamic: self.dynamic_helptext[key] = True else: self.dynamic_helptext.pop(key, None) def has_helptext(self, key): """ Returns boolean indicating whether the given field has accompanying help text. """ return key in self.helptext def render_helptext(self, key): """ Render the help text for the given field. """ text = self.helptext[key] text = text.replace('"', '"') return HTML.literal(text) def set_vuejs_field_converter(self, field, converter): self.vuejs_field_converters[field] = converter def render(self, template=None, **kwargs): if not template: template = '/forms/form.mako' context = kwargs context['form'] = self return render(template, context) def make_deform_form(self): if not hasattr(self, 'deform_form'): schema = self.make_schema() # TODO: we are still also doing this when making the schema, but # seems like this should be the right place instead? # apply any default values for key, default in self.defaults.items(): if key in schema: schema[key].default = default # get initial form values from model instance kwargs = {} # TODO: ugh, this is necessary to avoid some logic # which assumes a ColanderAlchemy schema i think? if self.appstruct is not UNSPECIFIED: if self.appstruct: kwargs['appstruct'] = self.appstruct elif self.model_instance: if self.model_class: kwargs['appstruct'] = schema.dictify(self.model_instance) else: kwargs['appstruct'] = self.model_instance # create form form = deform.Form(schema, **kwargs) form.tailbone_form = self # set readonly widget where applicable for field in self.readonly_fields: if field in form: form[field].widget = ReadonlyWidget() self.deform_form = form return self.deform_form def render_deform(self, dform=None, template=None, **kwargs): if not template: template = '/forms/deform_buefy.mako' if dform is None: dform = self.make_deform_form() # TODO: would perhaps be nice to leverage deform's default rendering # someday..? i.e. using Chameleon *.pt templates # return form.render() context = kwargs context['form'] = self context['dform'] = dform context.setdefault('can_edit_help', self.can_edit_help) if context['can_edit_help']: context.setdefault('edit_help_url', self.edit_help_url) context['field_labels'] = self.get_field_labels() context['field_markdowns'] = self.get_field_markdowns() context.setdefault('form_kwargs', {}) # TODO: deprecate / remove the latter option here if self.auto_disable_save or self.auto_disable: context['form_kwargs'].setdefault('ref', self.component_studly) context['form_kwargs']['@submit'] = 'submit{}'.format(self.component_studly) if self.focus_spec: context['form_kwargs']['data-focus'] = self.focus_spec context['request'] = self.request context['readonly_fields'] = self.readonly_fields context['render_field_readonly'] = self.render_field_readonly return render(template, context) def get_field_labels(self): return dict([(field, self.get_label(field)) for field in self]) def get_field_markdowns(self): model = self.request.rattail_config.get_model() if not hasattr(self, 'field_markdowns'): infos = Session.query(model.TailboneFieldInfo)\ .filter(model.TailboneFieldInfo.route_prefix == self.route_prefix)\ .all() self.field_markdowns = dict([(info.field_name, info.markdown_text) for info in infos]) return self.field_markdowns def get_vuejs_model_value(self, field): """ This method must return "raw" JS which will be assigned as the initial model value for the given field. This JS will be written as part of the overall response, to be interpreted on the client side. """ if field.name in self.vuejs_field_converters: convert = self.vuejs_field_converters[field.name] value = convert(field.cstruct) return json.dumps(value) if isinstance(field.schema.typ, colander.Set): if field.cstruct is colander.null: return '[]' try: return self.jsonify_value(field.cstruct) except Exception as error: raise TailboneJSONFieldError(field.name, error) def jsonify_value(self, value): """ Take a Python value and convert to JSON """ if value is colander.null: return 'null' if isinstance(value, dfwidget.filedict): # TODO: we used to always/only return 'null' here but hopefully # this also works, to show existing filename when present if value and value['filename']: return json.dumps({'name': value['filename']}) return 'null' app = self.request.rattail_config.get_app() value = app.json_friendly(value) return json.dumps(value) def get_error_messages(self, field): if field.error: return field.error.messages() error = self.make_deform_form().error if error: if isinstance(error, colander.Invalid): if error.node.name == field.name: return error.messages() def messages_json(self, messages): dump = json.dumps(messages) dump = dump.replace("'", ''') return dump def field_visible(self, field): if self.hidden and self.hidden.get(field): return False return True def set_vuejs_component_kwargs(self, **kwargs): self.vuejs_component_kwargs.update(kwargs) def render_vuejs_component(self): """ Render the Vue.js component HTML for the form. Most typically this is something like: .. code-block:: html """ kwargs = dict(self.vuejs_component_kwargs) if self.can_edit_help: kwargs.setdefault(':configure-fields-help', 'configureFieldsHelp') return HTML.tag(self.component, **kwargs) def render_buefy_field(self, fieldname, bfield_attrs={}): """ Render the given field in a Buefy-compatible way. Note that this is meant to render *editable* fields, i.e. showing a widget, unless the field input is hidden. In other words it's not for "readonly" fields. """ dform = self.make_deform_form() field = dform[fieldname] if fieldname in dform else None include = bool(field) if self.readonly or (not field and fieldname in self.readonly_fields): include = True if not include: return if self.field_visible(fieldname): label = self.get_label(fieldname) markdowns = self.get_field_markdowns() # these attrs will be for the (*not* the widget) attrs = { ':horizontal': 'true', } # add some magic for file input fields if field and isinstance(field.schema.typ, deform.FileData): attrs['class_'] = 'file' # show helptext if present # TODO: older logic did this only if field was *not* # readonly, perhaps should add that back.. if self.has_helptext(fieldname): msgkey = 'message' if self.dynamic_helptext.get(fieldname): msgkey = ':message' attrs[msgkey] = self.render_helptext(fieldname) # show errors if present error_messages = self.get_error_messages(field) if field else None if error_messages: # TODO: this surely can't be what we ought to do # here..? seems like we must pass JS but not JSON, # sort of, so we custom-write the JS code to ensure # single instead of double quotes delimit strings # within the code. message = '[{}]'.format(', '.join([ "'{}'".format(msg.replace("'", r"\'")) for msg in error_messages])) attrs.update({ 'type': 'is-danger', ':message': message, }) # merge anything caller provided attrs.update(bfield_attrs) # render the field widget or whatever if self.readonly or fieldname in self.readonly_fields: html = self.render_field_value(fieldname) or HTML.tag('span') elif field: html = field.serialize(**self.get_renderer_kwargs(fieldname)) html = HTML.literal(html) # may need a complex label label_contents = [label] # add 'help' icon/tooltip if defined if markdowns.get(fieldname): icon = HTML.tag('b-icon', size='is-small', pack='fas', icon='question-circle') tooltip = render_markdown(markdowns[fieldname]) # nb. must apply hack to get