def date_field(data, field=None, required=True):
field_data = _field(data, field, required)
try:
return datetime_help.parse_date(
field_data) if field_data is not None else None
except:
raise exceptions.ValidationError('%s是ISO_8601格式的日期字符串' % field)
def datetime_field(data, field=None, required=True):
field_data = _field(data, field, required)
try:
return datetime_help.parse_datetime(
field_data) if field_data is not None else None
except:
raise exceptions.ValidationError(
'{field}是ISO_8601格式的时间字符串'.format(field=field or data))
def data(self):
if not hasattr(self, '_data'):
self._data = None
if self.request.body:
try:
self._data = json.loads(self.request.body.decode('utf-8'))
except:
raise exceptions.ValidationError('请求的body是非json格式')
return self._data
def list_field(data, field=None, required=True):
""" list类型检查
@param data 如果field不为None，那么field从data里取值，否则判断data是否为list类型
@param field 如果不为None，那么需要从data里提取值
@param required 是否data里必须存在field字段，如果字段不存在且required为False，返回None
"""
field_data = _field(data, field, required)
if not field_data and not required:
return None
if isinstance(field_data, str):
try:
field_data = json.loads(field_data)
except:
raise exceptions.ValidationError(
'{field}是list类型'.format(field=field))
if not isinstance(field_data, (list, set, tuple)):
raise exceptions.ValidationError('{field}是list类型'.format(field=field))
return list(field_data)
def _field(data, field, required):
if field:
data = data or {}
if not isinstance(data, dict):
raise exceptions.SystemError()
if required and field not in data:
raise exceptions.ValidationError('{field}必填'.format(field=field))
return data.get(field)
else:
return data
def float_field(data, field=None, required=True):
""" float类型检查
@param data 如果field不为None，那么field从data里取值，否则判断data是否为float类型
@param field 如果不为None，那么需要从data里提取值
@param required 是否data里必须存在field字段，如果字段不存在且required为False，返回None
"""
field_data = _field(data, field, required)
if not field_data and not required:
return None
try:
return float(field_data)
except:
raise exceptions.ValidationError('{field}是float类型'.format(field=field))
def get_body(self, parse_json=True):
""" 提取http请求的body数据
@param parse_json 是否将body数据解析成json格式
@return body http请求的body数据
"""
body = self.request.body
if not body:
return None
if parse_json:
try:
body = json.loads(body.decode('utf8'))
except:
exceptions.ValidationError(msg='请求body数据格式错误')
return body
def bool_field(data, field=None, required=True):
""" bool类型检查
@param data 如果field不为None，那么field从data里取值，否则判断data是否为bool类型
@param field 如果不为None，那么需要从data里提取值
@param required 是否data里必须存在field字段，如果字段不存在且required为False，返回None
"""
field_data = _field(data, field, required)
if str(field_data).lower() == 'true':
return True
if str(field_data).lower() == 'false':
return False
if not required:
return None
raise exceptions.ValidationError('{field}是bool类型'.format(field=field))
