X-Git-Url: http://git.ithinksw.org/philo.git/blobdiff_plain/22ed154223d146c24e7335584a1f83357601dc3a..9a80d9302cbe6bc9fcd69ce86acf5c31ffab0693:/forms.py

diff --git a/forms.py b/forms.py
index 907e54d..506ab71 100644
--- a/forms.py
+++ b/forms.py
@@ -1,6 +1,9 @@
-from django.forms.models import model_to_dict, fields_for_model, ModelFormMetaclass, ModelForm
+from django.core.exceptions import ValidationError, ObjectDoesNotExist
+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
+from philo.models import Entity, Template, Contentlet, ContentReference
 from philo.models.fields import RelationshipField
 from philo.utils import fattr
 
@@ -86,4 +89,140 @@ class EntityForm(EntityFormBase): # Would inherit from ModelForm directly if it
 			instance.save()
 			self.save_m2m()
 		
-		return instance
\ No newline at end of file
+		return instance
+
+
+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):
+				extended_template = node.get_parent(Context())
+				validate_template(extended_template)
+			elif isinstance(node, loader_tags.IncludeNode):
+				included_template = loader.get_template(node.template_name.resolve(Context()))
+				validate_template(extended_template)
+		except Exception, e:
+			raise ValidationError("Template code invalid. Error was: %s: %s" % (e.__class__.__name__, e))
+
+
+class TemplateForm(ModelForm):
+	def clean_code(self):
+		code = self.cleaned_data['code']
+		try:
+			t = DjangoTemplate(code)
+		except Exception, e:
+			raise ValidationError("Template code invalid. Error was: %s: %s" % (e.__class__.__name__, e))
+
+		validate_template(t)
+		return code
+
+	class Meta:
+		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):
+	class Meta:
+		model = Contentlet
+		fields = ['name', 'content', 'dynamic']
+
+
+class ContentReferenceForm(ContainerForm):
+	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
+
+
+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()
+			containers = []
+		else:
+			self.instance = instance
+			containers = list(self.instance.containers[0])
+	
+		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()
+			containers = []
+		else:
+			self.instance = instance
+			containers = list(self.instance.containers[1])
+	
+		super(ContentReferenceInlineFormSet, self).__init__(containers, data, files, instance, save_as_new, prefix, queryset)
+	
+	def get_container_instances(self, containers, qs):
+		qs = qs.filter(name__in=[c[0] for c in containers])
+		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