- from UserDict import DictMixin
-
from django import forms
from django.contrib.contenttypes.models import ContentType
from django.contrib.contenttypes import generic
from philo.exceptions import AncestorDoesNotExist
from philo.models.fields import JSONField
from philo.signals import entity_class_prepared
- from philo.utils import ContentTypeRegistryLimiter, ContentTypeSubclassLimiter
+ from philo.utils import ContentTypeRegistryLimiter, ContentTypeSubclassLimiter, AttributeMapper, TreeAttributeMapper
from philo.validators import json_validator
def __unicode__(self):
return u'"%s": %s' % (self.key, self.value)
+ def set_value(self, value, value_class=JSONValue):
+ """Given a value and a value class, sets up self.value appropriately."""
+ if isinstance(self.value, value_class):
+ val = self.value
+ else:
+ if isinstance(self.value, models.Model):
+ self.value.delete()
+ val = value_class()
+
+ val.set_value(value)
+ val.save()
+
+ self.value = val
+ self.save()
+
class Meta:
app_label = 'philo'
unique_together = (('key', 'entity_content_type', 'entity_object_id'), ('value_content_type', 'value_object_id'))
- class QuerySetMapper(object, DictMixin):
- def __init__(self, queryset, passthrough=None):
- self.queryset = queryset
- self.passthrough = passthrough
-
- def __getitem__(self, key):
- try:
- value = self.queryset.get(key__exact=key).value
- except ObjectDoesNotExist:
- if self.passthrough is not None:
- return self.passthrough.__getitem__(key)
- raise KeyError
- else:
- if value is not None:
- return value.value
- return value
-
- def keys(self):
- keys = set(self.queryset.values_list('key', flat=True).distinct())
- if self.passthrough is not None:
- keys |= set(self.passthrough.keys())
- return list(keys)
-
-
class EntityOptions(object):
def __init__(self, options):
if options is not None:
attribute_set = generic.GenericRelation(Attribute, content_type_field='entity_content_type', object_id_field='entity_object_id')
- @property
- def attributes(self):
+ def get_attribute_mapper(self, mapper=AttributeMapper):
"""
- Property that returns a dictionary-like object which can be used to retrieve related :class:`Attribute`\ s' values directly.
+ Returns a dictionary-like object which can be used to retrieve related :class:`Attribute`\ s' values directly.
Example::
u'eggs'
"""
-
- return QuerySetMapper(self.attribute_set.all())
+ return mapper(self)
+ attributes = property(get_attribute_mapper)
class Meta:
abstract = True
def get_with_path(self, path, root=None, absolute_result=True, pathsep='/', field='slug'):
"""
- If ``absolute_result`` is ``True``, returns the object at ``path`` (starting at ``root``) or raises a :class:`DoesNotExist` exception. Otherwise, returns a tuple containing the deepest object found along ``path`` (or ``root`` if no deeper object is found) and the remainder of the path after that object as a string (or None if there is no remaining path).
+ If ``absolute_result`` is ``True``, returns the object at ``path`` (starting at ``root``) or raises an :class:`~django.core.exceptions.ObjectDoesNotExist` exception. Otherwise, returns a tuple containing the deepest object found along ``path`` (or ``root`` if no deeper object is found) and the remainder of the path after that object as a string (or None if there is no remaining path).
.. note:: If you are looking for something with an exact path, it is faster to use absolute_result=True, unless the path depth is over ~40, in which case the high cost of the absolute query may make a binary search (i.e. non-absolute) faster.
:param absolute_result: Whether to return an absolute result or do a binary search
:param pathsep: The path separator used in ``path``
:param field: The field on the model which should be queried for ``path`` segment matching.
- :returns: An instance if absolute_result is True or (instance, remaining_path) otherwise.
+ :returns: An instance if ``absolute_result`` is ``True`` or an (instance, remaining_path) tuple otherwise.
+ :raises django.core.exceptions.ObjectDoesNotExist: if no object can be found matching the input parameters.
"""
__metaclass__ = TreeEntityBase
- @property
- def attributes(self):
+ def get_attribute_mapper(self, mapper=None):
"""
- Property that returns a dictionary-like object which can be used to retrieve related :class:`Attribute`\ s' values directly. If an attribute with a given key is not related to the :class:`Entity`, then the object will check the parent's attributes.
+ Returns a dictionary-like object which can be used to retrieve related :class:`Attribute`\ s' values directly. If an attribute with a given key is not related to the :class:`Entity`, then the object will check the parent's attributes.
Example::
u'eggs'
"""
-
- if self.parent:
- return QuerySetMapper(self.attribute_set.all(), passthrough=self.parent.attributes)
- return super(TreeEntity, self).attributes
+ if mapper is None:
+ if self.parent:
+ mapper = TreeAttributeMapper
+ else:
+ mapper = AttributeMapper
+ return super(TreeEntity, self).get_attribute_mapper(mapper)
+ attributes = property(get_attribute_mapper)
class Meta:
abstract = True
from django.utils.encoding import smart_str
from philo.exceptions import MIDDLEWARE_NOT_CONFIGURED, ViewCanNotProvideSubpath, ViewDoesNotProvideSubpaths
- from philo.models.base import TreeEntity, Entity, QuerySetMapper, register_value_model
+ from philo.models.base import TreeEntity, Entity, register_value_model
from philo.models.fields import JSONField
- from philo.utils import ContentTypeSubclassLimiter
+ from philo.utils import ContentTypeSubclassLimiter, LazyPassthroughAttributeMapper
-from philo.validators import RedirectValidator
from philo.signals import view_about_to_render, view_finished_rendering
If ``obj`` is provided, :meth:`get_reverse_params` will be called and the results will be combined with any ``view_name``, ``args``, and ``kwargs`` that may have been passed in.
- This method will raise the following exceptions:
-
- - :class:`~philo.exceptions.ViewDoesNotProvideSubpaths` if :attr:`accepts_subpath` is False.
- - :class:`~philo.exceptions.ViewCanNotProvideSubpath` if a reversal is not possible.
-
:param view_name: The name of the view to be reversed.
:param args: Extra args for reversing the view.
:param kwargs: A dictionary of arguments for reversing the view.
:param node: The node whose subpath this is.
:param obj: An object to be passed to :meth:`get_reverse_params` to generate a view_name, args, and kwargs for reversal.
:returns: A subpath beyond the node that reverses the view, or an absolute url that reverses the view if a node was passed in.
+ :except philo.exceptions.ViewDoesNotProvideSubpaths: if :attr:`accepts_subpath` is False
+ :except philo.exceptions.ViewCanNotProvideSubpath: if a reversal is not possible.
"""
if not self.accepts_subpath:
def attributes_with_node(self, node):
"""
- Returns a :class:`~philo.models.base.QuerySetMapper` using the :class:`Node`'s attributes as a passthrough.
+ Returns a dictionary-like object which can be used to directly retrieve the values of :class:`Attribute`\ s related to the :class:`View`, falling back on similar object which retrieves the values of the passed-in node and its ancestors.
"""
- return QuerySetMapper(self.attribute_set, passthrough=node.attributes)
+ return LazyPassthroughAttributeMapper((self, node))
def render_to_response(self, request, extra_context=None):
"""
"""An abstract parent class for models which deal in targeting a url."""
#: An optional :class:`ForeignKey` to a :class:`Node`. If provided, that node will be used as the basis for the redirect.
target_node = models.ForeignKey(Node, blank=True, null=True, related_name="%(app_label)s_%(class)s_related")
- #: A :class:`CharField` which may contain an absolute or relative URL. This will be validated with :class:`philo.validators.RedirectValidator`.
- url_or_subpath = models.CharField(max_length=200, validators=[RedirectValidator()], blank=True, help_text="Point to this url or, if a node is defined and accepts subpaths, this subpath of the node.")
+ #: A :class:`CharField` which may contain an absolute or relative URL, or the name of a node's subpath.
+ url_or_subpath = models.CharField(max_length=200, blank=True, help_text="Point to this url or, if a node is defined and accepts subpaths, this subpath of the node.")
#: A :class:`~philo.models.fields.JSONField` instance. If the value of :attr:`reversing_parameters` is not None, the :attr:`url_or_subpath` will be treated as the name of a view to be reversed. The value of :attr:`reversing_parameters` will be passed into the reversal as args if it is a list or as kwargs if it is a dictionary. Otherwise it will be ignored.
reversing_parameters = JSONField(blank=True, help_text="If reversing parameters are defined, url_or_subpath will instead be interpreted as the view name to be reversed.")
git.ithinksw.org / philo.git / commitdiff