)
from sqlalchemy.ext.associationproxy import association_proxy
from sqlalchemy.orm import (
- backref, eagerload_all, relation, class_mapper, synonym, mapper,
+ backref, compile_mappers, eagerload_all, relation, class_mapper, synonym, mapper,
)
from sqlalchemy.orm.session import Session, object_session
from sqlalchemy.orm.collections import attribute_mapped_collection
default_lang = u'en'
-def makeTextTable(object_table, name_plural, name_singular, columns, lazy):
+def makeTextTable(foreign_table_class, table_suffix_plural, table_suffix_singular, columns, lazy):
# With "Language", we'd have two language_id. So, rename one to 'lang'
- safe_name = object_table.__singlename__
- if safe_name == 'language':
- safe_name = 'lang'
+ foreign_key_name = foreign_table_class.__singlename__
+ if foreign_key_name == 'language':
+ foreign_key_name = 'lang'
- tablename = object_table.__singlename__ + '_' + name_plural
- singlename = object_table.__singlename__ + '_' + name_singular
+ table_name = foreign_table_class.__singlename__ + '_' + table_suffix_plural
- class Strings(object):
- __tablename__ = tablename
- __singlename__ = singlename
- _attrname = name_plural
+ class TranslatedStringsTable(object):
+ __tablename__ = table_name
+ _attrname = table_suffix_plural
_language_identifier = association_proxy('language', 'identifier')
- for name, plural, column in columns:
- column.name = name
+ for column_name, column_name_plural, column in columns:
+ column.name = column_name
if not column.nullable:
# A Python side default value, so that the strings can be set
# one by one without the DB complaining about missing values
column.default = ColumnDefault(u'')
- table = Table(tablename, metadata,
- Column(safe_name + '_id', Integer, ForeignKey(object_table.id),
+ table = Table(table_name, metadata,
+ Column(foreign_key_name + '_id', Integer, ForeignKey(foreign_table_class.id),
primary_key=True, nullable=False),
Column('language_id', Integer, ForeignKey(Language.id),
primary_key=True, index=True, nullable=False),
*(column for name, plural, column in columns)
)
- mapper(Strings, table,
+ mapper(TranslatedStringsTable, table,
properties={
- "object_id": synonym(safe_name + '_id'),
+ "object_id": synonym(foreign_key_name + '_id'),
"language": relation(Language,
primaryjoin=table.c.language_id == Language.id,
),
- safe_name: relation(object_table,
- primaryjoin=(object_table.id == table.c[safe_name + "_id"]),
- backref=backref(name_plural,
+ foreign_key_name: relation(foreign_table_class,
+ primaryjoin=(foreign_table_class.id == table.c[foreign_key_name + "_id"]),
+ backref=backref(table_suffix_plural,
collection_class=attribute_mapped_collection('language'),
lazy=lazy,
),
)
# The relation to the object
- Strings.object = getattr(Strings, safe_name)
+ TranslatedStringsTable.object = getattr(TranslatedStringsTable, foreign_key_name)
# Link the tables themselves, so we can get them if needed
- Strings.object_table = object_table
- setattr(object_table, name_singular + '_table', Strings)
+ TranslatedStringsTable.foreign_table_class = foreign_table_class
+ setattr(foreign_table_class, table_suffix_singular + '_table', TranslatedStringsTable)
- for colname, pluralname, column in columns:
+ for column_name, column_name_plural, column in columns:
# Provide a property with all the names, and an English accessor
# for backwards compatibility
def text_string_creator(language_code, string):
- row = Strings()
+ row = TranslatedStringsTable()
row._language_identifier = language_code
- setattr(row, colname, string)
+ setattr(row, column_name, string)
return row
- setattr(object_table, pluralname,
- association_proxy(name_plural, colname, creator=text_string_creator))
- setattr(object_table, colname, DefaultLangProperty(pluralname))
+ setattr(foreign_table_class, column_name_plural,
+ association_proxy(table_suffix_plural, column_name, creator=text_string_creator))
+ setattr(foreign_table_class, column_name, DefaultLangProperty(column_name_plural))
- if colname == 'name':
- object_table.name_table = Strings
+ if column_name == 'name':
+ foreign_table_class.name_table = TranslatedStringsTable
- return Strings
+ compile_mappers()
+ return TranslatedStringsTable
class DefaultLangProperty(object):
- def __init__(self, colname):
- self.colname = colname
+ def __init__(self, column_name):
+ self.column_name = column_name
def __get__(self, instance, cls):
if instance:
- return getattr(instance, self.colname)[default_lang]
+ return getattr(instance, self.column_name)[default_lang]
else:
- return getattr(cls, self.colname)[default_lang]
+ # TODO I think this is kind of broken
+ return getattr(cls, self.column_name)[default_lang]
def __set__(self, instance, value):
getattr(instance, self.colname)[default_lang] = value
if text_columns:
string_table = makeTextTable(table, 'texts', 'text', text_columns, lazy=False)
if prose_columns:
- string_table = makeTextTable(table, 'prose', 'prose', prose_columns, lazy=True)
+ string_table = makeTextTable(table, 'prose', 'prose', prose_columns, lazy='select')
### Add language relations
for table in list(table_classes):