Merge branch 'master' into penfield

[philo.git] / models.py

diff --git a/models.py b/models.py
index 5089508..78ce9a9 100644 (file)
--- a/models.py
+++ b/models.py
@@ -5,12 +5,11 @@ from django.contrib.contenttypes import generic
 from django.contrib.contenttypes.models import ContentType
 from django.db import models
 from django.contrib.sites.models import Site
 from django.contrib.contenttypes.models import ContentType
 from django.db import models
 from django.contrib.sites.models import Site

-import mptt

 from utils import fattr
 from django.template import add_to_builtins as register_templatetags
 from django.template import Template as DjangoTemplate
 from django.template import TemplateDoesNotExist
 from utils import fattr
 from django.template import add_to_builtins as register_templatetags
 from django.template import Template as DjangoTemplate
 from django.template import TemplateDoesNotExist

-from django.template import Context
+from django.template import Context, RequestContext

 from django.core.exceptions import ObjectDoesNotExist
 try:
        import json
 from django.core.exceptions import ObjectDoesNotExist
 try:
        import json


@@ -20,14 +19,30 @@ from UserDict import DictMixin
 from templatetags.containers import ContainerNode
 from django.template.loader_tags import ExtendsNode, ConstantIncludeNode, IncludeNode
 from django.template.loader import get_template
 from templatetags.containers import ContainerNode
 from django.template.loader_tags import ExtendsNode, ConstantIncludeNode, IncludeNode
 from django.template.loader import get_template

+from django.http import Http404, HttpResponse, HttpResponseServerError, HttpResponseRedirect
+from django.core.servers.basehttp import FileWrapper

 
 
 
 

-def _ct_model_name(model):
-       opts = model._meta
-       while opts.proxy:
-               model = opts.proxy_for_model
-               opts = model._meta
-       return opts.object_name.lower()
+_value_models = {}
+_value_models_ct_pks = []
+
+
+def register_value_model(model):
+       if issubclass(model, models.Model):
+               if model not in _value_models:
+                       _value_models[model] = ContentType.objects.get_for_model(model)
+                       _value_models_ct_pks.append(_value_models[model].pk)
+       else:
+               raise TypeError('philo.models.register_value_model only accepts subclasses of django.db.models.Model')
+
+
+def unregister_value_model(model):
+       if issubclass(model, models.Model):
+               if model in _value_models:
+                       _value_models_ct_pks.remove(_value_models[model].pk)
+                       del _value_models[model]
+       else:
+               raise TypeError('philo.models.unregister_value_model only accepts subclasses of django.db.models.Model')

 
 
 class Attribute(models.Model):
 
 
 class Attribute(models.Model):


@@ -37,40 +52,27 @@ class Attribute(models.Model):
        key = models.CharField(max_length=255)
        json_value = models.TextField(verbose_name='Value (JSON)', help_text='This value must be valid JSON.')
        
        key = models.CharField(max_length=255)
        json_value = models.TextField(verbose_name='Value (JSON)', help_text='This value must be valid JSON.')
        

-       @property
-       def value(self):
+       def get_value(self):

                return json.loads(self.json_value)
        
                return json.loads(self.json_value)
        

+       def set_value(self, value):
+               self.json_value = json.dumps(value)
+       
+       def delete_value(self):
+               self.json_value = json.dumps(None)
+       
+       value = property(get_value, set_value, delete_value)
+       

        def __unicode__(self):
                return u'"%s": %s' % (self.key, self.value)
 
 
 class Relationship(models.Model):
        def __unicode__(self):
                return u'"%s": %s' % (self.key, self.value)
 
 
 class Relationship(models.Model):

-       _value_models = []
-       
-       @staticmethod
-       def register_value_model(model):
-               if issubclass(model, models.Model):
-                       model_name = _ct_model_name(model)
-                       if model_name not in Relationship._value_models:
-                               Relationship._value_models.append(model_name)
-               else:
-                       raise TypeError('Relationship.register_value_model only accepts subclasses of django.db.models.Model')
-       
-       @staticmethod
-       def unregister_value_model(model):
-               if issubclass(model, models.Model):
-                       model_name = _ct_model_name(model)
-                       if model_name in Relationship._value_models:
-                               Relationship._value_models.remove(model_name)
-               else:
-                       raise TypeError('Relationship.unregister_value_model only accepts subclasses of django.db.models.Model')
-       

        entity_content_type = models.ForeignKey(ContentType, related_name='relationship_entity_set', verbose_name='Entity type')
        entity_object_id = models.PositiveIntegerField(verbose_name='Entity ID')
        entity = generic.GenericForeignKey('entity_content_type', 'entity_object_id')
        key = models.CharField(max_length=255)
        entity_content_type = models.ForeignKey(ContentType, related_name='relationship_entity_set', verbose_name='Entity type')
        entity_object_id = models.PositiveIntegerField(verbose_name='Entity ID')
        entity = generic.GenericForeignKey('entity_content_type', 'entity_object_id')
        key = models.CharField(max_length=255)

-       value_content_type = models.ForeignKey(ContentType, related_name='relationship_value_set', limit_choices_to={'model__in':_value_models}, verbose_name='Value type')
+       value_content_type = models.ForeignKey(ContentType, related_name='relationship_value_set', limit_choices_to={'pk__in': _value_models_ct_pks}, verbose_name='Value type')

        value_object_id = models.PositiveIntegerField(verbose_name='Value ID')
        value = generic.GenericForeignKey('value_content_type', 'value_object_id')
        
        value_object_id = models.PositiveIntegerField(verbose_name='Value ID')
        value = generic.GenericForeignKey('value_content_type', 'value_object_id')
        


@@ -117,62 +119,58 @@ class Collection(models.Model):
        description = models.TextField(blank=True, null=True)
 
 
        description = models.TextField(blank=True, null=True)
 
 

-class CollectionMember(models.Model):
-       _value_models = []
-       
-       @staticmethod
-       def register_value_model(model):
-               if issubclass(model, models.Model):
-                       model_name = _ct_model_name(model)
-                       if model_name not in CollectionMember._value_models:
-                               CollectionMember._value_models.append(model_name)
-               else:
-                       raise TypeError('CollectionMember.register_value_model only accepts subclasses of django.db.models.Model')
-       
-       @staticmethod
-       def unregister_value_model(model):
-               if issubclass(model, models.Model):
-                       model_name = _ct_model_name(model)
-                       if model_name in CollectionMember._value_models:
-                               CollectionMember._value_models.remove(model_name)
+class CollectionMemberManager(models.Manager):
+       use_for_related_fields = True
+
+       def with_model(self, model):
+               if model in _value_models:
+                       return model._default_manager.filter(pk__in=self.filter(member_content_type=_value_models[model]).values_list('member_object_id', flat=True))

                else:
                else:

-                       raise TypeError('CollectionMember.unregister_value_model only accepts subclasses of django.db.models.Model')
-       
+                       raise TypeError('CollectionMemberManager.with_model only accepts models previously registered with philo.models.register_value_model')
+
+
+class CollectionMember(models.Model):
+       objects = CollectionMemberManager()

        collection = models.ForeignKey(Collection, related_name='members')
        index = models.PositiveIntegerField(verbose_name='Index', help_text='This will determine the ordering of the item within the collection. (Optional)', null=True, blank=True)
        collection = models.ForeignKey(Collection, related_name='members')
        index = models.PositiveIntegerField(verbose_name='Index', help_text='This will determine the ordering of the item within the collection. (Optional)', null=True, blank=True)

-       member_content_type = models.ForeignKey(ContentType, limit_choices_to={'model__in':_value_models}, verbose_name='Member type')
+       member_content_type = models.ForeignKey(ContentType, limit_choices_to={'pk__in': _value_models_ct_pks}, verbose_name='Member type')

        member_object_id = models.PositiveIntegerField(verbose_name='Member ID')
        member = generic.GenericForeignKey('member_content_type', 'member_object_id')
 
 
        member_object_id = models.PositiveIntegerField(verbose_name='Member ID')
        member = generic.GenericForeignKey('member_content_type', 'member_object_id')
 
 

-def register_value_model(model):
-       Relationship.register_value_model(model)
-       CollectionMember.register_value_model(model)
-
-
-def unregister_value_model(model):
-       Relationship.unregister_value_model(model)
-       CollectionMember.unregister_value_model(model)
-
-

 class TreeManager(models.Manager):
        use_for_related_fields = True
        
        def roots(self):
                return self.filter(parent__isnull=True)
        
 class TreeManager(models.Manager):
        use_for_related_fields = True
        
        def roots(self):
                return self.filter(parent__isnull=True)
        

-       def get_with_path(self, path, root=None, pathsep='/'):
+       def get_with_path(self, path, root=None, absolute_result=True, pathsep='/'):
+               """
+               Returns the object with the path, or None if there is no object with that path,
+               unless absolute_result is set to False, in which case it returns a tuple containing
+               the deepest object found along the path, and the remainder of the path after that
+               object as a string (or None in the case that there is no remaining path).
+               """

                slugs = path.split(pathsep)
                obj = root
                slugs = path.split(pathsep)
                obj = root

+               remaining_slugs = list(slugs)
+               remainder = None

                for slug in slugs:
                for slug in slugs:

+                       remaining_slugs.remove(slug)

                        if slug: # ignore blank slugs, handles for multiple consecutive pathseps
                                try:
                                        obj = self.get(slug__exact=slug, parent__exact=obj)
                                except self.model.DoesNotExist:
                        if slug: # ignore blank slugs, handles for multiple consecutive pathseps
                                try:
                                        obj = self.get(slug__exact=slug, parent__exact=obj)
                                except self.model.DoesNotExist:

-                                       obj = None
+                                       if absolute_result:
+                                               obj = None
+                                       remaining_slugs.insert(0, slug)
+                                       remainder = pathsep.join(remaining_slugs)

                                        break
                if obj:
                                        break
                if obj:

-                       return obj
+                       if absolute_result:
+                               return obj
+                       else:
+                               return (obj, remainder)

                raise self.model.DoesNotExist('%s matching query does not exist.' % self.model._meta.object_name)
 
 
                raise self.model.DoesNotExist('%s matching query does not exist.' % self.model._meta.object_name)
 
 


@@ -214,6 +212,76 @@ class TreeEntity(TreeModel, Entity):
                abstract = True
 
 
                abstract = True
 
 

+class Node(TreeEntity):
+       instance_type = models.ForeignKey(ContentType, editable=False)
+       
+       def get_path(self, pathsep='/', field='slug'):
+               path = getattr(self.instance, field)
+               parent = self.parent
+               while parent:
+                       path = getattr(parent.instance, field) + pathsep + path
+                       parent = parent.parent
+               return path
+       path = property(get_path)
+       
+       def save(self, force_insert=False, force_update=False):
+               if not hasattr(self, 'instance_type_ptr'):
+                       self.instance_type = ContentType.objects.get_for_model(self.__class__)
+               super(Node, self).save(force_insert, force_update)
+       
+       @property
+       def instance(self):
+               return self.instance_type.get_object_for_this_type(id=self.id)
+       
+       accepts_subpath = False
+       
+       def render_to_response(self, request, path=None, subpath=None):
+               return HttpResponseServerError()
+
+
+class MultiNode(Node):
+       accepts_subpath = True
+       
+       urlpatterns = []
+       
+       def render_to_response(self, request, path=None, subpath=None):
+               if not subpath:
+                       subpath = ""
+               subpath = "/" + subpath
+               from django.core.urlresolvers import resolve
+               view, args, kwargs = resolve(subpath, urlconf=self)
+               return view(request, *args, **kwargs)
+       
+       class Meta:
+               abstract = True
+
+
+class Redirect(Node):
+       STATUS_CODES = (
+               (302, 'Temporary'),
+               (301, 'Permanent'),
+       )
+       target = models.URLField()
+       status_code = models.IntegerField(choices=STATUS_CODES, default=302, verbose_name='redirect type')
+       
+       def render_to_response(self, request, path=None, subpath=None):
+               response = HttpResponseRedirect(self.target)
+               response.status_code = self.status_code
+               return response
+
+
+class File(Node):
+       """ For storing arbitrary files """
+       mimetype = models.CharField(max_length=255)
+       file = models.FileField(upload_to='philo/files/%Y/%m/%d')
+       
+       def render_to_response(self, request, path=None, subpath=None):
+               wrapper = FileWrapper(self.file)
+               response = HttpResponse(wrapper, content_type=self.mimetype)
+               response['Content-Length'] = self.file.size
+               return response
+
+

 class Template(TreeModel):
        name = models.CharField(max_length=255)
        documentation = models.TextField(null=True, blank=True)
 class Template(TreeModel):
        name = models.CharField(max_length=255)
        documentation = models.TextField(null=True, blank=True)


@@ -240,8 +308,9 @@ class Template(TreeModel):
                                names = []
                                for node in nodelist:
                                        try:
                                names = []
                                for node in nodelist:
                                        try:

-                                               if hasattr(node, 'nodelist'):
-                                                       names.extend(nodelist_container_node_names(node.nodelist))
+                                               for nodelist_name in ('nodelist', 'nodelist_loop', 'nodelist_empty', 'nodelist_true', 'nodelist_false'):
+                                                       if hasattr(node, nodelist_name):
+                                                               names.extend(nodelist_container_node_names(getattr(node, nodelist_name)))

                                                if isinstance(node, ContainerNode):
                                                        names.append(node.name)
                                                elif isinstance(node, ExtendsNode):
                                                if isinstance(node, ContainerNode):
                                                        names.append(node.name)
                                                elif isinstance(node, ExtendsNode):


@@ -273,20 +342,21 @@ class Template(TreeModel):
                except Template.DoesNotExist:
                        raise TemplateDoesNotExist(template_name)
                return (template.code, template.origin)
                except Template.DoesNotExist:
                        raise TemplateDoesNotExist(template_name)
                return (template.code, template.origin)

-mptt.register(Template)

 
 
 
 

-class Page(TreeEntity):
+class Page(Node):

        template = models.ForeignKey(Template, related_name='pages')
        title = models.CharField(max_length=255)
        
        template = models.ForeignKey(Template, related_name='pages')
        title = models.CharField(max_length=255)
        

+       def render_to_response(self, request, path=None, subpath=None):
+               return HttpResponse(self.template.django_template.render(RequestContext(request, {'page': self})), mimetype=self.template.mimetype)
+       

        def __unicode__(self):
                return self.get_path(u' › ', 'title')
        def __unicode__(self):
                return self.get_path(u' › ', 'title')

-mptt.register(Page)

 
 
 
 

-# the following line enables the selection of a page as the root for a given django.contrib.sites Site object
-models.ForeignKey(Page, related_name='sites', null=True, blank=True).contribute_to_class(Site, 'root_page')
+# the following line enables the selection of a node as the root for a given django.contrib.sites Site object
+models.ForeignKey(Node, related_name='sites', null=True, blank=True).contribute_to_class(Site, 'root_node')

 
 
 class Contentlet(models.Model):
 
 
 class Contentlet(models.Model):