-### Add text/prose tables
-
-default_lang = u'en'
-
-def makeTextTable(foreign_table_class, table_suffix_plural, table_suffix_singular, columns, lazy, Language=Language):
- # With "Language", we'd have two language_id. So, rename one to 'lang'
- foreign_key_name = foreign_table_class.__singlename__
- if foreign_key_name == 'language':
- foreign_key_name = 'lang'
-
- table_name = foreign_table_class.__singlename__ + '_' + table_suffix_plural
-
- class TranslatedStringsTable(object):
- __tablename__ = table_name
- _attrname = table_suffix_plural
- _language_identifier = association_proxy('language', 'identifier')
-
- 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(table_name, foreign_table_class.__table__.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(TranslatedStringsTable, table,
- properties={
- "object_id": synonym(foreign_key_name + '_id'),
- "language": relation(Language,
- primaryjoin=table.c.language_id == Language.id,
- ),
- 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_identifier'),
- lazy=lazy,
- ),
- ),
- },
- )
-
- # The relation to the object
- TranslatedStringsTable.object = getattr(TranslatedStringsTable, foreign_key_name)
-
- # Link the tables themselves, so we can get them if needed
- TranslatedStringsTable.foreign_table_class = foreign_table_class
- setattr(foreign_table_class, table_suffix_singular + '_table', TranslatedStringsTable)
-
- 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 = TranslatedStringsTable()
- row._language_identifier = language_code
- setattr(row, column_name, string)
- return row
-
- 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 column_name == 'name':
- foreign_table_class.name_table = TranslatedStringsTable
-
- compile_mappers()
- return TranslatedStringsTable
-
-class DefaultLangProperty(object):
- def __init__(self, column_name):
- self.column_name = column_name
-
- def __get__(self, instance, cls):
- if instance:
- return getattr(instance, self.column_name)[default_lang]
- else:
- # 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
-
- def __delete__(self, instance):
- del getattr(instance, self.colname)[default_lang]
-
-for table in list(table_classes):
- # Find all the language-specific columns, keeping them in the order they
- # were defined
- all_columns = []
- for colname in dir(table):
- column = getattr(table, colname)
- if isinstance(column, LanguageSpecificColumn):
- all_columns.append((colname, column))
- delattr(table, colname)
- all_columns.sort(key=lambda pair: pair[1].order)
-
- # Break them into text and prose columns
- text_columns = []
- prose_columns = []
- for colname, column in all_columns:
- spec = colname, column.plural, column.makeSAColumn()
- if isinstance(column, TextColumn):
- text_columns.append(spec)
- elif isinstance(column, ProseColumn):
- prose_columns.append(spec)
-
- if (text_columns or prose_columns) and issubclass(table, LanguageSpecific):
- raise AssertionError("Language-specific table %s shouldn't have explicit language-specific columns" % table)
-
- 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='select')
-