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
"""
The temp module provides a NamedTemporaryFile that can be re-opened on any
platform. Most platforms use the standard Python tempfile.TemporaryFile class,
but MS Windows users are given a custom class.
This is needed because in Windows NT, the default implementation of
NamedTemporaryFile uses the O_TEMPORARY flag, and thus cannot be reopened [1].
1: http://mail.python.org/pipermail/python-list/2005-December/359474.html
"""
import os
import tempfile
__all__ = ('NamedTemporaryFile', 'gettempdir',)
if os.name == 'nt' and hasattr(os, 'unlink') and hasattr(os, 'fdopen'):
class TemporaryFile(object):
"""
Temporary file object constructor that works in Windows and supports
reopening of the temporary file in windows.
"""
def __init__(self, mode='w+b', bufsize=-1, suffix='', prefix='',
dir=None):
fd, name = tempfile.mkstemp(suffix=suffix, prefix=prefix,
dir=dir)
self.name = name
self.file = os.fdopen(fd, mode, bufsize)
self.close_called = False
# Because close can be called during shutdown
# we need to cache os.unlink and access it
# as self.unlink only
unlink = os.unlink
def close(self):
if not self.close_called:
self.close_called = True
try:
self.file.close()
except (OSError, IOError):
pass
try:
self.unlink(self.name)
except (OSError):
pass
def __del__(self):
self.close()
def read(self, *args): return self.file.read(*args)
def seek(self, offset): return self.file.seek(offset)
def write(self, s): return self.file.write(s)
def __iter__(self): return iter(self.file)
def readlines(self, size=None): return self.file.readlines(size)
def xreadlines(self): return self.file.xreadlines()
NamedTemporaryFile = TemporaryFile
else:
NamedTemporaryFile = tempfile.NamedTemporaryFile
gettempdir = tempfile.gettempdir