def target(self, before_filter):
from bpmappers.fields import DelegateField
return DelegateField(DummyMapper, before_filter=before_filter)
def target(self):
from bpmappers.fields import DelegateField
return DelegateField(DummyMapper, required=False)
def __new__(cls, name, bases, attrs):
if '_meta' not in attrs:
opt = Options()
attrs['_meta'] = opt
else:
opt = attrs['_meta']
# BaseMapperの処理が後に来るので
# ここで先にoptを拡張する
mapper_meta = attrs.get('Meta')
if mapper_meta is not None:
model = getattr(mapper_meta, 'model', None)
# Meta.mapper_fields
mapper_fields = getattr(mapper_meta, 'mapper_fields', None)
defined_fields = DEFINED_MODEL_MAPPER_FIELDS.copy()
if mapper_fields:
defined_fields.update(mapper_fields)
# Meta.modelが無い場合はエラー
if model is None:
raise MetaModelError
for model_field in model._meta.fields + model._meta.many_to_many:
# Meta.fields
if hasattr(mapper_meta, 'fields'):
if mapper_meta.fields is not None \
and model_field.name not in mapper_meta.fields:
continue
# Meta.exclude
if hasattr(mapper_meta, 'exclude'):
if mapper_meta.exclude is not None \
and model_field.name in mapper_meta.exclude:
continue
# モデルのフィールドに対応したField追加
if model_field.remote_field:
# 同じモデルを参照しようとした場合はスキップする
if model == model_field.remote_field.model:
continue
if isinstance(model_field, models.ForeignKey):
# ForeignKey
related_model_mapper = create_model_mapper(
model_field.remote_field.model,
model_mapper_fields=mapper_fields)
opt.add_field(
model_field.name,
DelegateField(related_model_mapper,
key=model_field.name,
required=not model_field.null))
elif isinstance(model_field, models.ManyToManyField):
# ManyToManyField
related_model_mapper = create_model_mapper(
model_field.remote_field.model,
model_mapper_fields=mapper_fields)
opt.add_field(
model_field.name,
ListDelegateField(
related_model_mapper,
key=model_field.name,
filter=lambda manager: manager.all()))
else:
for defined_field in defined_fields:
if isinstance(model_field, defined_field):
mapper_field = defined_fields[defined_field]
opt.add_field(model_field.name,
mapper_field(key=model_field.name))
break
else:
# If there is no match field, use default.
opt.add_field(
model_field.name,
DEFAULT_MAPPER_FIELD(key=model_field.name))
attrs['_meta'] = opt
return BaseMapper.__new__(cls, name, bases, attrs)