from django import forms
from django.contrib.admin.widgets import AdminTextareaWidget
+from django.contrib.contenttypes.generic import BaseGenericInlineFormSet
+from django.contrib.contenttypes.models import ContentType
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.template import loader, loader_tags, TemplateDoesNotExist, Context, Template as DjangoTemplate
from django.utils.datastructures import SortedDict
from philo.admin.widgets import ModelLookupWidget
-from philo.models import Entity, Template, Contentlet, ContentReference
-from philo.models.fields import RelationshipField
+from philo.models import Entity, Template, Contentlet, ContentReference, Attribute
from philo.utils import fattr
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))
+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
- validate_template(t)
- return code
- class Meta:
- model = Template
+class AttributeInlineFormSet(BaseGenericInlineFormSet):
+ "Necessary to force the GenericInlineFormset to use the form's save method for new objects."
+ def save_new(self, form, commit):
+ setattr(form.instance, self.ct_field.get_attname(), ContentType.objects.get_for_model(self.instance).pk)
+ setattr(form.instance, self.ct_fk_field.get_attname(), self.instance.pk)
+ return form.save()
class ContainerForm(ModelForm):
class ContentletForm(ContainerForm):
- content = forms.CharField(required=False, widget=AdminTextareaWidget)
+ content = forms.CharField(required=False, widget=AdminTextareaWidget, label='Content')
def should_delete(self):
return not bool(self.cleaned_data['content'])
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.
+ # 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
git.ithinksw.org / philo.git / blobdiff