Python db.Property方法代码示例

# 需要导入模块: from google.appengine.ext import db [as 别名]
# 或者: from google.appengine.ext.db import Property [as 别名]
def property_clean(prop, value):
  """Apply Property level validation to value.

  Calls .make_value_from_form() and .validate() on the property and catches
  exceptions generated by either.  The exceptions are converted to
  forms.ValidationError exceptions.

  Args:
    prop: The property to validate against.
    value: The value to validate.

  Raises:
    forms.ValidationError if the value cannot be validated.
  """
  if value is not None:
    try:



      prop.validate(prop.make_value_from_form(value))
    except (db.BadValueError, ValueError), e:
      raise forms.ValidationError(unicode(e)) 

# 需要导入模块: from google.appengine.ext import db [as 别名]
# 或者: from google.appengine.ext.db import Property [as 别名]
def convert(self, model, prop, field_args):
        """
        Returns a form field for a single model property.

        :param model:
            The ``db.Model`` class that contains the property.
        :param prop:
            The model property: a ``db.Property`` instance.
        :param field_args:
            Optional keyword arguments to construct the field.
        """
        prop_type_name = type(prop).__name__
        kwargs = {
            'label': prop.name.replace('_', ' ').title(),
            'default': prop.default_value(),
            'validators': [],
        }
        if field_args:
            kwargs.update(field_args)

        if prop.required and prop_type_name not in self.NO_AUTO_REQUIRED:
            kwargs['validators'].append(validators.required())

        if prop.choices:
            # Use choices in a select field if it was not provided in field_args
            if 'choices' not in kwargs:
                kwargs['choices'] = [(v, v) for v in prop.choices]
            return f.SelectField(**kwargs)
        else:
            converter = self.converters.get(prop_type_name, None)
            if converter is not None:
                return converter(model, prop, kwargs) 

# 需要导入模块: from google.appengine.ext import db [as 别名]
# 或者: from google.appengine.ext.db import Property [as 别名]
def validate(self, value):
    if value is not None and not isinstance(value, Flow):
      raise db.BadValueError('Property %s must be convertible '
                          'to a FlowThreeLegged instance (%s)' %
                          (self.name, value))
    return super(FlowProperty, self).validate(value) 

# 需要导入模块: from google.appengine.ext import db [as 别名]
# 或者: from google.appengine.ext.db import Property [as 别名]
def _validate(self, value):
      """Validates a value as a proper Flow object.

      Args:
        value: A value to be set on the property.

      Raises:
        TypeError if the value is not an instance of Flow.
      """
      logger.info('validate: Got type %s', type(value))
      if value is not None and not isinstance(value, Flow):
        raise TypeError('Property %s must be convertible to a flow '
                        'instance; received: %s.' % (self._name, value)) 

# 需要导入模块: from google.appengine.ext import db [as 别名]
# 或者: from google.appengine.ext.db import Property [as 别名]
def validate(self, value):
        if value is not None and not isinstance(value, Flow):
            raise db.BadValueError('Property %s must be convertible '
                                   'to a FlowThreeLegged instance (%s)' %
                                   (self.name, value))
        return super(FlowProperty, self).validate(value) 

# 需要导入模块: from google.appengine.ext import db [as 别名]
# 或者: from google.appengine.ext.db import Property [as 别名]
def validate(self, value):
    if value is not None and not isinstance(value, OAuthCredentials):
      raise BadValueError('Property %s must be convertible '
                          'to an OAuthCredentials instance (%s)' %
                          (self.name, value))
    return super(OAuthCredentialsProperty, self).validate(value) 

# 需要导入模块: from google.appengine.ext import db [as 别名]
# 或者: from google.appengine.ext.db import Property [as 别名]
def validate(self, value):
        if value is not None and not isinstance(value, client.Flow):
            raise db.BadValueError(
                'Property {0} must be convertible '
                'to a FlowThreeLegged instance ({1})'.format(self.name, value))
        return super(FlowProperty, self).validate(value)