def _add_field(
self,
model,
field,
column_family=None
):
if None is column_family:
column_family = get_column_family(
self.connection,
model
)
db_field = (
field.db_column
if field.db_column
else field.column
)
cql_field_type = internal_type_to_column_map[field.get_internal_type()]
cql_field = cql_field_type(
primary_key=field.primary_key,
index=field.db_index,
db_field=db_field,
required=not field.blank
)
setattr(column_family, db_field, cql_field)
column_family._columns[db_field] = cql_field
CqlColumnFamilyMetaClass.update_column_family(column_family)
return column_family
def _remove_field(
self,
model,
field,
column_family=None
):
if None is column_family:
column_family = get_column_family(
self.connection,
model
)
delattr(column_family, field.name)
db_field = (
field.db_column
if field.db_column
else field.column
)
del column_family._columns[db_field]
CqlColumnFamilyMetaClass.update_column_family(column_family)
return column_family
