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Fix a stupid closure-in-loop problem. #654 #655

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This commit is contained in:
Eevee 2011-09-11 17:27:58 -07:00
parent eb6cae4bf3
commit a11261e529
1 changed files with 23 additions and 17 deletions
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40
pokedex/db/multilang.py
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@ -11,6 +11,26 @@ from sqlalchemy.types import Integer
from pokedex.db import markdown
def _getset_factory_factory(column_name, string_getter):
"""Hello! I am a factory for creating getset_factory functions for SQLA.
I exist to avoid the closure-in-a-loop problem.
"""
def getset_factory(underlying_type, instance):
def getter(translations):
if translations is None:
return None
text = getattr(translations, column_name)
if text is None:
return text
session = object_session(translations)
language = translations.local_language
return string_getter(text, session, language)
def setter(translations, value):
# The string must be set on the Translation directly.
raise AttributeError("Cannot set %s" % column_name)
return getter, setter
return getset_factory
def create_translation_table(_table_name, foreign_class, relation_name,
language_class, relation_lazy='select', **kwargs):
"""Creates a table that represents some kind of data attached to the given
@ -137,25 +157,11 @@ def create_translation_table(_table_name, foreign_class, relation_name,
# Add per-column proxies to the original class
for name, column in kwitems:
getset_factory = None
string_getter = column.info.get('string_getter')
if string_getter:
def getset_factory(underlying_type, instance):
def getter(translations):
if translations is None:
return None
text = getattr(translations, column.name)
if text is None:
return text
session = object_session(translations)
language = translations.local_language
return string_getter(text, session, language)
def setter(translations, value):
# The string must be set on the Translation directly.
raise AttributeError("Cannot set %s" % column.name)
return getter, setter
getset_factory = getset_factory
else:
getset_factory = None
getset_factory = _getset_factory_factory(
column.name, string_getter)
# Class.(column) -- accessor for the default language's value
setattr(foreign_class, name,