Adust the as_table tag to render a pick link if appropriate
The templates are adjusted to pass on a 'reference' value, which
is the url_name of the view from which the entity should be picked.
The as_table (and related) function(s) construct and then pass on
this argument and enable takes_contex so that we have access to the
context of the enclosing template.
We only extract ReferenceProperties that end with '_link_id' since
that is how all RP's are currently named. It is not possible to
create a field with the same name as the RP, as GAE will try to
interpret it's contents as the key of an entity before even calling
any function we can override.
Patch by: Sverre Rabbelier
#!/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.
"""List generation logic.
"""
__authors__ = [
'"Sverre Rabbelier" <sverre@rabbelier.nl>',
]
class Lists(object):
"""List array suitable for enumerating over with just 'for in'.
"""
DEF_PASSTHROUGH_FIELDS = [
'pagination',
'pagination_form',
'description',
'heading',
'row',
'limit',
'newest',
'prev',
'next',
'first',
'last',
]
def __init__(self, contents):
"""Constructs a new Lists object with the specified contents.
"""
# All the contents of all the lists
self._contents = contents
self._content = {}
# For iterating over all the lists
self._lists = range(len(contents))
self._list_data = []
# For iterating over the rows
self._rows = []
self._row_data = []
def __getattr__(self, attr):
"""Delegate field lookup to the current list if appropriate.
If, and only if, a lookup is done on one of the fields defined in
DEF_PASSTHROUGH_FIELDS, and the current list defines this field,
the value from the current list is returned.
"""
if attr not in self.DEF_PASSTHROUGH_FIELDS:
raise AttributeError()
if attr not in self._content:
raise AttributeError()
return self.get(attr)
def get(self, item):
"""Returns the item for the current list data.
"""
return self._content[item]
def nextList(self):
"""Shifts out the current list content.
The main content of the next list is returned for further processing.
"""
# Advance the list data once
self._content = self._contents[0]
self._contents = self._contents[1:]
# Update internal 'iterators'
self._list_data = self.get('data')
self._rows = range(len(self._list_data))
return self.get('main')
def nextRow(self):
"""Returns the next list row for the current list.
Before calling this method, nextList should be called at least once.
"""
# Update internal 'iterators'
self._row_data = self._list_data[0]
# Advance the row data once
self._list_data = self._list_data[1:]
return self.get('row')
def lists(self):
"""Returns a list of numbers the size of the amount of lists.
This method can be used to iterate over all lists with shift,
without using a while loop.
"""
return self._lists
def rows(self):
"""Returns a list of numbers the size of the amount of items.
This method can be used to iterate over all items with next for
the current list, without using a while loop.
"""
return self._rows
def item(self):
"""Returns the current row item for the current list.
Before calling this method, nextRow should be called at least once.
"""
return self._row_data
def redirect(self):
"""Returns the redirect for the current row item in the current list.
"""
action, args = self.get('action')
return action(self._row_data, args)