+++ /dev/null
-from django import forms
-from django.contrib.admin.widgets import AdminTextareaWidget
-from django.core.exceptions import ObjectDoesNotExist
-from django.db.models import Q
-from django.forms.models import ModelForm, BaseInlineFormSet
-from django.forms.formsets import TOTAL_FORM_COUNT
-from philo.admin.widgets import ModelLookupWidget
-from philo.models import Contentlet, ContentReference
-
-
-__all__ = (
- 'ContentletForm',
- 'ContentletInlineFormSet',
- 'ContentReferenceForm',
- 'ContentReferenceInlineFormSet'
-)
-
-
-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