def validate(self, value, model_instance):
# json.loadsができるかどうか確認.
if not self.editable:
# Skip validation for non-editable fields.
return
models.TextField.validate(self, value, model_instance)
try:
Json.encode(value, ensure_ascii=False)
except:
raise exceptions.ValidationError(self.error_messages['notjson'])
def to_python(self, value):
"""
loadsしてみて成功したら結果を返す。
失敗したらそのまま返す。
"""
if isinstance(value, unicode):
value = StrUtil.to_s(value)
if isinstance(value, str):
try:
value = Json.decode(value)
except:
pass
return value
def render(self, name, value, attrs=None):
try:
value = Json.encode(value, ensure_ascii=False)
except:
pass
return super(JsonInput, self).render(name, value, attrs=attrs)
def get_db_prep_value(self, value, connection, prepared=False):
if value is None:
return None
return Json.encode(value, ensure_ascii=False)