Extend taggable-mixin to support different Tag models.
Usage is pretty simple. Tag model is default in Taggable constructor but you
can call it with different model like GHOPTaskType that inherits from Tag model.
Both Taggable and Tag models have been updated and they don't use hardcoded Tag
model anymore and instead use cls of class methods or self.__class__. In case
of Taggable it's self.__tag_model.
#!/usr/bin/python2.5
#
# Copyright 2008 the Melange authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Presence (Model) query functions.
"""
__authors__ = [
'"Sverre Rabbelier" <sverre@rabbelier.nl>',
'"Lennard de Rijk" <ljvderijk@gmail.com>'
]
from google.appengine.ext import db
from soc.logic.models import base
from soc.logic.models import linkable as linkable_logic
import soc.models.presence
class Logic(base.Logic):
"""Logic methods for the Presence model.
"""
def __init__(self, model=soc.models.presence.Presence,
base_model=None, scope_logic=linkable_logic):
"""Defines the name, key_name and model for this entity.
"""
super(Logic, self).__init__(model, base_model=base_model,
scope_logic=scope_logic)
def getToS(self, entity):
"""Returns the ToS Document of the Presence entity, or None if no ToS.
Args:
entity: Presence (or one of its sub-classes) entity that may or may
not have a ToS Document attached
"""
if not entity:
return None
try:
tos_doc = entity.tos
except db.Error:
return None
return tos_doc
logic = Logic()