X-Git-Url: http://git.ithinksw.org/philo.git/blobdiff_plain/6d5e8d5c70865b4e4181f411c66d1a9ec9c16ccd..f2172d8e9a1dc796966f1dc9be6fb869d2d83355:/forms.py?ds=sidebyside

diff --git a/forms.py b/forms.py
index 8050d39..bf498fa 100644
--- a/forms.py
+++ b/forms.py
@@ -1,8 +1,13 @@
-from django.core.exceptions import ValidationError
-from django.forms.models import model_to_dict, fields_for_model, ModelFormMetaclass, ModelForm
+from django import forms
+from django.contrib.admin.widgets import AdminTextareaWidget
+from django.core.exceptions import ValidationError, ObjectDoesNotExist
+from django.db.models import Q
+from django.forms.models import model_to_dict, fields_for_model, ModelFormMetaclass, ModelForm, BaseInlineFormSet
+from django.forms.formsets import TOTAL_FORM_COUNT
 from django.template import loader, loader_tags, TemplateDoesNotExist, Context, Template as DjangoTemplate
 from django.utils.datastructures import SortedDict
-from philo.models import Entity, Template
+from philo.admin.widgets import ModelLookupWidget
+from philo.models import Entity, Template, Contentlet, ContentReference
 from philo.models.fields import RelationshipField
 from philo.utils import fattr
 
@@ -94,7 +99,7 @@ class EntityForm(EntityFormBase): # Would inherit from ModelForm directly if it
 def validate_template(template):
 	"""
 	Makes sure that the template and all included or extended templates are valid.
-	"""	
+	""" 
 	for node in template.nodelist:
 		try:
 			if isinstance(node, loader_tags.ExtendsNode):
@@ -119,4 +124,178 @@ class TemplateForm(ModelForm):
 		return code
 
 	class Meta:
-		model = Template
\ No newline at end of file
+		model = Template
+
+
+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)
+	
+	def should_delete(self):
+		return not bool(self.cleaned_data['content'])
+	
+	class Meta:
+		model = Contentlet
+		fields = ['name', 'content', 'dynamic']
+
+
+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