-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
+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
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):
+ 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
git.ithinksw.org / philo.git / blobdiff