mirror of
https://github.com/graphql-python/graphene.git
synced 2024-09-22 03:49:02 +03:00
55 lines
1.5 KiB
ReStructuredText
55 lines
1.5 KiB
ReStructuredText
Mutations
|
||
=========
|
||
|
||
Most APIs don’t just allow you to read data, they also allow you to
|
||
write.
|
||
|
||
In GraphQL, this is done using mutations. Just like queries,
|
||
Relay puts some additional requirements on mutations, but Graphene
|
||
nicely manages that for you. All you need to do is make your mutation a
|
||
subclass of ``relay.ClientIDMutation``.
|
||
|
||
.. code:: python
|
||
|
||
class IntroduceShip(relay.ClientIDMutation):
|
||
|
||
class Input:
|
||
ship_name = graphene.String(required=True)
|
||
faction_id = graphene.String(required=True)
|
||
|
||
ship = graphene.Field(Ship)
|
||
faction = graphene.Field(Faction)
|
||
|
||
@classmethod
|
||
def mutate_and_get_payload(cls, input, context, info):
|
||
ship_name = input.get('ship_name')
|
||
faction_id = input.get('faction_id')
|
||
ship = create_ship(ship_name, faction_id)
|
||
faction = get_faction(faction_id)
|
||
return IntroduceShip(ship=ship, faction=faction)
|
||
|
||
|
||
|
||
Accepting Files
|
||
-------------
|
||
|
||
Mutations can also accept files, they will be in the context varibale
|
||
|
||
.. code:: python
|
||
|
||
class UploadFile(graphene.ClientIDMutation):
|
||
class Input:
|
||
pass
|
||
# nothing needed for uploading file
|
||
|
||
# your return fields
|
||
success = graphene.String()
|
||
|
||
@classmethod
|
||
def mutate_and_get_payload(cls, input, context, info):
|
||
files = context.FILES
|
||
print(files)
|
||
|
||
# do something with files
|
||
|
||
return UploadFile(success=True) |