+ return instance
+
+
+class AttributeForm(ModelForm):
+ def __init__(self, *args, **kwargs):
+ super(AttributeForm, self).__init__(*args, **kwargs)
+
+ # This is necessary because model forms store changes to self.instance in their clean method.
+ # Mutter mutter.
+ self._cached_value_ct = self.instance.value_content_type
+ self._cached_value = self.instance.value
+
+ if self.instance.value is not None:
+ value_field = self.instance.value.value_formfield()
+ if value_field:
+ self.fields['value'] = value_field
+ if hasattr(self.instance.value, 'content_type'):
+ self.fields['content_type'] = self.instance.value._meta.get_field('content_type').formfield(initial=getattr(self.instance.value.content_type, 'pk', None))
+
+ def save(self, *args, **kwargs):
+ # At this point, the cleaned_data has already been stored on self.instance.
+ if self.instance.value_content_type != self._cached_value_ct:
+ if self.instance.value is not None:
+ self._cached_value.delete()
+ if 'value' in self.cleaned_data:
+ del(self.cleaned_data['value'])
+
+ if self.instance.value_content_type is not None:
+ # Make a blank value of the new type! Run special code for content_type attributes.
+ if hasattr(self.instance.value_content_type.model_class(), 'content_type'):
+ if self._cached_value and hasattr(self._cached_value, 'content_type'):
+ new_ct = self._cached_value.content_type
+ else:
+ new_ct = None
+ new_value = self.instance.value_content_type.model_class().objects.create(content_type=new_ct)
+ else:
+ new_value = self.instance.value_content_type.model_class().objects.create()
+
+ new_value.apply_data(self.cleaned_data)
+ new_value.save()
+ self.instance.value = new_value
+ else:
+ # The value type is the same, but one of the fields has changed.
+ # Check to see if the changed value was the content type. We have to check the
+ # cleaned_data because self.instance.value.content_type was overridden.
+ if hasattr(self.instance.value, 'content_type') and 'content_type' in self.cleaned_data and 'value' in self.cleaned_data and (not hasattr(self._cached_value, 'content_type') or self._cached_value.content_type != self.cleaned_data['content_type']):
+ self.cleaned_data['value'] = None
+
+ self.instance.value.apply_data(self.cleaned_data)
+ self.instance.value.save()
+
+ super(AttributeForm, self).save(*args, **kwargs)
+ return self.instance
+
+ class Meta:
+ model = Attribute
+
+
+class ContainerForm(ModelForm):
+ def __init__(self, *args, **kwargs):
+ super(ContainerForm, self).__init__(*args, **kwargs)
+ self.verbose_name = self.instance.name.replace('_', ' ')
+
+
+class ContentletForm(ContainerForm):
+ content = forms.CharField(required=False, widget=AdminTextareaWidget, label='Content')
+
+ def should_delete(self):
+ return not bool(self.cleaned_data['content'])
+
+ class Meta:
+ model = Contentlet
+ fields = ['name', 'content']
+
+
+class ContentReferenceForm(ContainerForm):
+ def __init__(self, *args, **kwargs):
+ super(ContentReferenceForm, self).__init__(*args, **kwargs)
+ try:
+ self.fields['content_id'].widget = ModelLookupWidget(self.instance.content_type)
+ except ObjectDoesNotExist:
+ # This will happen when an empty form (which we will never use) gets instantiated.
+ pass
+
+ def should_delete(self):
+ return (self.cleaned_data['content_id'] is None)
+
+ class Meta:
+ model = ContentReference
+ fields = ['name', 'content_id']
+
+
+class ContainerInlineFormSet(BaseInlineFormSet):
+ def __init__(self, containers, data=None, files=None, instance=None, save_as_new=False, prefix=None, queryset=None):
+ # Unfortunately, I need to add some things to BaseInline between its __init__ and its
+ # super call, so a lot of this is repetition.
+
+ # Start cribbed from BaseInline
+ from django.db.models.fields.related import RelatedObject
+ self.save_as_new = save_as_new
+ # is there a better way to get the object descriptor?
+ self.rel_name = RelatedObject(self.fk.rel.to, self.model, self.fk).get_accessor_name()
+ if self.fk.rel.field_name == self.fk.rel.to._meta.pk.name:
+ backlink_value = self.instance
+ else:
+ backlink_value = getattr(self.instance, self.fk.rel.field_name)
+ if queryset is None:
+ queryset = self.model._default_manager
+ qs = queryset.filter(**{self.fk.name: backlink_value})
+ # End cribbed from BaseInline
+
+ self.container_instances, qs = self.get_container_instances(containers, qs)
+ self.extra_containers = containers
+ self.extra = len(self.extra_containers)
+ super(BaseInlineFormSet, self).__init__(data, files, prefix=prefix, queryset=qs)
+
+ def get_container_instances(self, containers, qs):
+ raise NotImplementedError
+
+ def total_form_count(self):
+ if self.data or self.files:
+ return self.management_form.cleaned_data[TOTAL_FORM_COUNT]
+ else:
+ return self.initial_form_count() + self.extra
+
+ def save_existing_objects(self, commit=True):
+ self.changed_objects = []
+ self.deleted_objects = []
+ if not self.get_queryset():
+ return []
+
+ saved_instances = []
+ for form in self.initial_forms:
+ pk_name = self._pk_field.name
+ raw_pk_value = form._raw_value(pk_name)
+
+ # clean() for different types of PK fields can sometimes return
+ # the model instance, and sometimes the PK. Handle either.
+ pk_value = form.fields[pk_name].clean(raw_pk_value)
+ pk_value = getattr(pk_value, 'pk', pk_value)
+
+ obj = self._existing_object(pk_value)
+ if form.should_delete():
+ self.deleted_objects.append(obj)
+ obj.delete()
+ continue
+ if form.has_changed():
+ self.changed_objects.append((obj, form.changed_data))
+ saved_instances.append(self.save_existing(form, obj, commit=commit))
+ if not commit:
+ self.saved_forms.append(form)
+ return saved_instances
+
+ def save_new_objects(self, commit=True):
+ self.new_objects = []
+ for form in self.extra_forms:
+ if not form.has_changed():
+ continue
+ # If someone has marked an add form for deletion, don't save the
+ # object.
+ if form.should_delete():
+ continue
+ self.new_objects.append(self.save_new(form, commit=commit))
+ if not commit:
+ self.saved_forms.append(form)
+ return self.new_objects
+
+
+class ContentletInlineFormSet(ContainerInlineFormSet):
+ def __init__(self, data=None, files=None, instance=None, save_as_new=False, prefix=None, queryset=None):
+ if instance is None:
+ self.instance = self.fk.rel.to()
+ else:
+ self.instance = instance
+
+ try:
+ containers = list(self.instance.containers[0])
+ except ObjectDoesNotExist:
+ containers = []
+
+ super(ContentletInlineFormSet, self).__init__(containers, data, files, instance, save_as_new, prefix, queryset)
+
+ def get_container_instances(self, containers, qs):
+ qs = qs.filter(name__in=containers)
+ container_instances = []
+ for container in qs:
+ container_instances.append(container)
+ containers.remove(container.name)
+ return container_instances, qs
+
+ def _construct_form(self, i, **kwargs):
+ if i >= self.initial_form_count(): # and not kwargs.get('instance'):
+ kwargs['instance'] = self.model(name=self.extra_containers[i - self.initial_form_count() - 1])
+
+ return super(ContentletInlineFormSet, self)._construct_form(i, **kwargs)
+
+
+class ContentReferenceInlineFormSet(ContainerInlineFormSet):
+ def __init__(self, data=None, files=None, instance=None, save_as_new=False, prefix=None, queryset=None):
+ if instance is None:
+ self.instance = self.fk.rel.to()
+ else:
+ self.instance = instance
+
+ try:
+ containers = list(self.instance.containers[1])
+ except ObjectDoesNotExist:
+ containers = []
+
+ super(ContentReferenceInlineFormSet, self).__init__(containers, data, files, instance, save_as_new, prefix, queryset)
+
+ def get_container_instances(self, containers, qs):
+ filter = Q()
+
+ for name, ct in containers:
+ filter |= Q(name=name, content_type=ct)
+
+ qs = qs.filter(filter)
+ container_instances = []
+ for container in qs:
+ container_instances.append(container)
+ containers.remove((container.name, container.content_type))
+ return container_instances, qs
+
+ def _construct_form(self, i, **kwargs):
+ if i >= self.initial_form_count(): # and not kwargs.get('instance'):
+ name, content_type = self.extra_containers[i - self.initial_form_count() - 1]
+ kwargs['instance'] = self.model(name=name, content_type=content_type)
+
+ return super(ContentReferenceInlineFormSet, self)._construct_form(i, **kwargs)
\ No newline at end of file
git.ithinksw.org / philo.git / blobdiff