Python google.appengine.ext.ndb 模块，DateTimeProperty() 实例源码

def from_json(self, request_data):
        """
        Update entity with new data from json.

        check for data to transform, if needed, perform operations and assign values to respective properties in entity.
        :param request_data:
        :return:
        """
        for property, value in request_data.iteritems():
            prop_type = self._properties.get(property)
            if prop_type:
                prop_value = value
                if isinstance(prop_type, (ndb.DateProperty, ndb.DateTimeProperty, ndb.TimeProperty)):
                    prop_value = utils.date_from_str(prop_type, prop_value)
                elif isinstance(prop_type, ndb.KeyProperty):
                    prop_value = ndb.Key(urlsafe=prop_value)
                setattr(self, property, prop_value)

def convert_DateTimeProperty(self, model, prop, kwargs):
        """Returns a form field for a ``ndb.DateTimeProperty``."""
        if prop._auto_now or prop._auto_now_add:
            return None

        return f.DateTimeField(format='%Y-%m-%d %H:%M:%S', **kwargs)

def convert_DateTimeProperty(self, model, prop, kwargs):
        """Returns a form field for a ``ndb.DateTimeProperty``."""
        if prop._auto_now or prop._auto_now_add:
            return None

        return f.DateTimeField(format='%Y-%m-%d %H:%M:%S', **kwargs)

def _get_for_dict(self, entity):
        value = super(DateTimeProperty, self)._get_for_dict(entity)
        if not value:
            return None
        return value.isoformat()

def convert_DateTimeProperty(self, model, prop, kwargs):
        """Returns a form field for a ``ndb.DateTimeProperty``."""
        if prop._auto_now or prop._auto_now_add:
            return None

        return f.DateTimeField(format='%Y-%m-%d %H:%M:%S', **kwargs)

def convert_DateTimeProperty(self, model, prop, kwargs):
        """Returns a form field for a ``ndb.DateTimeProperty``."""
        if prop._auto_now or prop._auto_now_add:
            return None

        return f.DateTimeField(format='%Y-%m-%d %H:%M:%S', **kwargs)

def date_from_str(prop_type, str_date):
    if isinstance(prop_type, ndb.DateProperty):
        return main_datetime.datetime.strptime(str_date, DATE_FORMAT)
    elif isinstance(prop_type, ndb.DateTimeProperty):
        return main_datetime.datetime.strptime(str_date, DATE_TIME_FORMAT)
    else:
        return main_datetime.datetime.strptime(str_date, TIME_FORMAT)

def convert_DateTimeProperty(self, model, prop, kwargs):
        """Returns a form field for a ``ndb.DateTimeProperty``."""
        if prop._auto_now or prop._auto_now_add:
            return None

        return f.DateTimeField(format='%Y-%m-%d %H:%M:%S', **kwargs)

def convert_DateTimeProperty(self, model, prop, kwargs):
        """Returns a form field for a ``ndb.DateTimeProperty``."""
        if prop._auto_now or prop._auto_now_add:
            return None

        return f.DateTimeField(format='%Y-%m-%d %H:%M:%S', **kwargs)

def convert_DateTimeProperty(self, model, prop, kwargs):
        """Returns a form field for a ``ndb.DateTimeProperty``."""
        if prop._auto_now or prop._auto_now_add:
            return None

        return f.DateTimeField(format='%Y-%m-%d %H:%M:%S', **kwargs)

def convert_DateTimeProperty(self, model, prop, kwargs):
        """Returns a form field for a ``ndb.DateTimeProperty``."""
        if prop._auto_now or prop._auto_now_add:
            return None

        return f.DateTimeField(format='%Y-%m-%d %H:%M:%S', **kwargs)

def convert_DateTimeProperty(self, model, prop, kwargs):
        """Returns a form field for a ``ndb.DateTimeProperty``."""
        if prop._auto_now or prop._auto_now_add:
            return None

        return f.DateTimeField(format='%Y-%m-%d %H:%M:%S', **kwargs)

def convert_DateTimeProperty(self, model, prop, kwargs):
        """Returns a form field for a ``ndb.DateTimeProperty``."""
        if prop._auto_now or prop._auto_now_add:
            return None

        return f.DateTimeField(format='%Y-%m-%d %H:%M:%S', **kwargs)

def convert_DateTimeProperty(self, model, prop, kwargs):
        """Returns a form field for a ``ndb.DateTimeProperty``."""
        if prop._auto_now or prop._auto_now_add:
            return None

        kwargs.setdefault('format', '%Y-%m-%d %H:%M:%S')
        return f.DateTimeField(**kwargs)

def convert_DateTimeProperty(self, model, prop, kwargs):
        """Returns a form field for a ``ndb.DateTimeProperty``."""
        if prop._auto_now or prop._auto_now_add:
            return None

        return f.DateTimeField(format='%Y-%m-%d %H:%M:%S', **kwargs)

def convert_DateTimeProperty(self, model, prop, kwargs):
        """Returns a form field for a ``ndb.DateTimeProperty``."""
        if prop._auto_now or prop._auto_now_add:
            return None

        return f.DateTimeField(format='%Y-%m-%d %H:%M:%S', **kwargs)

def convert_DateTimeProperty(self, model, prop, kwargs):
        """Returns a form field for a ``ndb.DateTimeProperty``."""
        if prop._auto_now or prop._auto_now_add:
            return None

        return f.DateTimeField(format='%Y-%m-%d %H:%M:%S', **kwargs)

def convert_DateTimeProperty(self, model, prop, kwargs):
        """Returns a form field for a ``ndb.DateTimeProperty``."""
        if prop._auto_now or prop._auto_now_add:
            return None

        return f.DateTimeField(format='%Y-%m-%d %H:%M:%S', **kwargs)

def testDateTimeProperty_shouldConvertToString(self):
        self.__assert_conversion(ndb.DateTimeProperty, DateTime)

def convert_DateTimeProperty(self, model, prop, kwargs):
        """Returns a form field for a ``ndb.DateTimeProperty``."""
        if prop._auto_now or prop._auto_now_add:
            return None

        return f.DateTimeField(format='%Y-%m-%d %H:%M:%S', **kwargs)

def convert_DateTimeProperty(self, model, prop, kwargs):
        """Returns a form field for a ``ndb.DateTimeProperty``."""
        if prop._auto_now or prop._auto_now_add:
            return None

        return f.DateTimeField(format='%Y-%m-%d %H:%M:%S', **kwargs)

def convert_DateTimeProperty(self, model, prop, kwargs):
        """Returns a form field for a ``ndb.DateTimeProperty``."""
        if prop._auto_now or prop._auto_now_add:
            return None

        return f.DateTimeField(format='%Y-%m-%d %H:%M:%S', **kwargs)

def convert_DateTimeProperty(self, model, prop, kwargs):
        """Returns a form field for a ``ndb.DateTimeProperty``."""
        if prop._auto_now or prop._auto_now_add:
            return None

        return f.DateTimeField(format='%Y-%m-%d %H:%M:%S', **kwargs)

def __init__(self, model_type, ancestor_type=None, keep_history=True):
    self.model_type = model_type
    self.ancestor_type = ancestor_type
    self.model_name = model_type.__name__
    self.keep_history = keep_history

    if self.keep_history:
      history_props = {
          'date': ndb.DateTimeProperty(auto_now_add=True),
          'obj': ndb.StructuredProperty(model_type, repeated=False),
          'client_id': ndb.StringProperty(),
      }
      self.history_model = type(
          self.model_name + 'History', (ndb.Model,), history_props)

def convert_DateTimeProperty(self, model, prop, kwargs):
        """Returns a form field for a ``ndb.DateTimeProperty``."""
        if prop._auto_now or prop._auto_now_add:
            return None

        return f.DateTimeField(format='%Y-%m-%d %H:%M:%S', **kwargs)

def convert_DateTimeProperty(self, model, prop, kwargs):
        """Returns a form field for a ``ndb.DateTimeProperty``."""
        if prop._auto_now or prop._auto_now_add:
            return None

        return f.DateTimeField(format='%Y-%m-%d %H:%M:%S', **kwargs)