from django.core.exceptions import ValidationError
from django.db import models
from django.http import HttpResponse
-from django.template import TemplateDoesNotExist, Context, RequestContext, Template as DjangoTemplate, TextNode, VariableNode
-from django.template.loader_tags import BlockNode, ExtendsNode, BlockContext
-from django.utils.datastructures import SortedDict
+from django.template import Context, RequestContext, Template as DjangoTemplate
-from philo.models.base import TreeModel, register_value_model
+from philo.models.base import SlugTreeEntity, register_value_model
from philo.models.fields import TemplateField
from philo.models.nodes import View
from philo.signals import page_about_to_render_to_string, page_finished_rendering_to_string
-from philo.templatetags.containers import ContainerNode
-from philo.utils import fattr
-from philo.validators import LOADED_TEMPLATE_ATTR
+from philo.utils import templates
__all__ = ('Template', 'Page', 'Contentlet', 'ContentReference')
-class LazyContainerFinder(object):
- def __init__(self, nodes, extends=False):
- self.nodes = nodes
- self.initialized = False
- self.contentlet_specs = set()
- self.contentreference_specs = SortedDict()
- self.blocks = {}
- self.block_super = False
- self.extends = extends
-
- def process(self, nodelist):
- for node in nodelist:
- if self.extends:
- if isinstance(node, BlockNode):
- self.blocks[node.name] = block = LazyContainerFinder(node.nodelist)
- block.initialize()
- self.blocks.update(block.blocks)
- continue
-
- if isinstance(node, ContainerNode):
- if not node.references:
- self.contentlet_specs.add(node.name)
- else:
- if node.name not in self.contentreference_specs.keys():
- self.contentreference_specs[node.name] = node.references
- continue
-
- if isinstance(node, VariableNode):
- if node.filter_expression.var.lookups == (u'block', u'super'):
- self.block_super = True
-
- if hasattr(node, 'child_nodelists'):
- for nodelist_name in node.child_nodelists:
- if hasattr(node, nodelist_name):
- nodelist = getattr(node, nodelist_name)
- self.process(nodelist)
-
- # LOADED_TEMPLATE_ATTR contains the name of an attribute philo uses to declare a
- # node as rendering an additional template. Philo monkeypatches the attribute onto
- # the relevant default nodes and declares it on any native nodes.
- if hasattr(node, LOADED_TEMPLATE_ATTR):
- loaded_template = getattr(node, LOADED_TEMPLATE_ATTR)
- if loaded_template:
- nodelist = loaded_template.nodelist
- self.process(nodelist)
-
- def initialize(self):
- if not self.initialized:
- self.process(self.nodes)
- self.initialized = True
-
-
-class Template(TreeModel):
+class Template(SlugTreeEntity):
"""Represents a database-driven django template."""
#: The name of the template. Used for organization and debugging.
name = models.CharField(max_length=255)
#: An insecure :class:`~philo.models.fields.TemplateField` containing the django template code for this template.
code = TemplateField(secure=False, verbose_name='django template code')
- @property
- def containers(self):
+ def get_containers(self):
"""
Returns a tuple where the first item is a list of names of contentlets referenced by containers, and the second item is a list of tuples of names and contenttypes of contentreferences referenced by containers. This will break if there is a recursive extends or includes in the template code. Due to the use of an empty Context, any extends or include tags with dynamic arguments probably won't work.
"""
template = DjangoTemplate(self.code)
-
- def build_extension_tree(nodelist):
- nodelists = []
- extends = None
- for node in nodelist:
- if not isinstance(node, TextNode):
- if isinstance(node, ExtendsNode):
- extends = node
- break
-
- if extends:
- if extends.nodelist:
- nodelists.append(LazyContainerFinder(extends.nodelist, extends=True))
- loaded_template = getattr(extends, LOADED_TEMPLATE_ATTR)
- nodelists.extend(build_extension_tree(loaded_template.nodelist))
- else:
- # Base case: root.
- nodelists.append(LazyContainerFinder(nodelist))
- return nodelists
-
- # Build a tree of the templates we're using, placing the root template first.
- levels = build_extension_tree(template.nodelist)[::-1]
-
- contentlet_specs = set()
- contentreference_specs = SortedDict()
- blocks = {}
-
- for level in levels:
- level.initialize()
- contentlet_specs |= level.contentlet_specs
- contentreference_specs.update(level.contentreference_specs)
- for name, block in level.blocks.items():
- if block.block_super:
- blocks.setdefault(name, []).append(block)
- else:
- blocks[name] = [block]
-
- for block_list in blocks.values():
- for block in block_list:
- block.initialize()
- contentlet_specs |= block.contentlet_specs
- contentreference_specs.update(block.contentreference_specs)
-
- return contentlet_specs, contentreference_specs
+ return templates.get_containers(template)
+ containers = property(get_containers)
def __unicode__(self):
"""Returns the value of the :attr:`name` field."""
return self.name
- class Meta:
+ class Meta(SlugTreeEntity.Meta):
app_label = 'philo'
git.ithinksw.org / philo.git / blobdiff