Display of current values functional.

[philo.git] / forms.py

diff --git a/forms.py b/forms.py
index b428d28..506ab71 100644 (file)
--- 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 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
 
 from philo.models.fields import RelationshipField
 from philo.utils import fattr
 


@@ -30,7 +33,7 @@ def proxy_fields_for_entity_model(entity_model, fields=None, exclude=None, widge
        if fields:
                field_dict = SortedDict(
                        [(f, field_dict.get(f)) for f in fields
        if fields:
                field_dict = SortedDict(
                        [(f, field_dict.get(f)) for f in fields

-                               if ((not exclude) or (exclude and f not in exclude)) and (f not in ignored)]
+                               if ((not exclude) or (exclude and f not in exclude)) and (f not in ignored) and (f in field_dict)]

                )
        return field_dict
 
                )
        return field_dict
 


@@ -86,4 +89,140 @@ class EntityForm(EntityFormBase): # Would inherit from ModelForm directly if it
                        instance.save()
                        self.save_m2m()
                
                        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