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from ..utils.orderedtype import OrderedType
class UnmountedType(OrderedType):
"""
This class acts a proxy for a Graphene Type, so it can be mounted
dynamically as Field, InputField or Argument.
Instead of writing:
.. code:: python
from graphene import ObjectType, Field, String
class MyObjectType(ObjectType):
my_field = Field(String, description='Description here')
It lets you write:
.. code:: python
from graphene import ObjectType, String
class MyObjectType(ObjectType):
my_field = String(description='Description here')
It is not used directly, but is inherited by other types and streamlines their use in
different context:
- Object Type
- Scalar Type
- Enum
- Interface
- Union
An unmounted type will accept arguments based upon its context (ObjectType, Field or
InputObjectType) and pass it on to the appropriate MountedType (Field, Argument or InputField).
See each Mounted type reference for more information about valid parameters.
"""
def __init__(self, *args, **kwargs):
super(UnmountedType, self).__init__()
self.args = args
self.kwargs = kwargs
def get_type(self):
"""
This function is called when the UnmountedType instance
is mounted (as a Field, InputField or Argument)
"""
raise NotImplementedError("get_type not implemented in {}".format(self))
def mount_as(self, _as):
return _as.mounted(self)
def Field(self): # noqa: N802
"""
Mount the UnmountedType as Field
"""
from .field import Field
return self.mount_as(Field)
def InputField(self): # noqa: N802
"""
Mount the UnmountedType as InputField
"""
from .inputfield import InputField
return self.mount_as(InputField)
def Argument(self): # noqa: N802
"""
Mount the UnmountedType as Argument
"""
from .argument import Argument
return self.mount_as(Argument)
def __eq__(self, other):
return self is other or (
isinstance(other, UnmountedType)
and self.get_type() == other.get_type()
and self.args == other.args
and self.kwargs == other.kwargs
)
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