Please Add Further Support for FastAPI or Pydantic ObjectTypes

I want to avoid repeating code fragments between the mutations and types with graphene in a FastAPI app.

Not a very polished example but please see below sample scenario.

**graphql\mutations.py**

import graphene

from models.customers import CustomerLogin, CustomerLogin_PydanticIn
from graphql.types import CustomerLoginType


class CreateUserMutation(graphene.Mutation):
class Arguments:
id = graphene.Int()
shard_id = graphene.Decimal()
seq_num = graphene.Decimal()
event_timedate = graphene.DateTime()
user_id = graphene.UUID()
device_token = graphene.UUID()
user_ip = graphene.String()
user_agent = graphene.String()
client_id = graphene.String()
process = graphene.String()
auth_result = graphene.String()
auth_fail_cause = graphene.String()
plain_email = graphene.String()

user = graphene.Field(CustomerLoginType)

@staticmethod
async def mutate(parent, info, user: CustomerLogin_PydanticIn):
user = await CustomerLogin.create(**user.dict())
return CreateUserMutation(user=user)

**graphql\types.py**

import graphene


# Fields should coincide with model.CustomerLogin
class CustomerLoginType(graphene.ObjectType):
id = graphene.Int()
shard_id = graphene.Decimal()
seq_num = graphene.Decimal()
event_timedate = graphene.DateTime()
user_id = graphene.UUID()
device_token = graphene.UUID()
user_ip = graphene.String()
user_agent = graphene.String()
client_id = graphene.String()
process = graphene.String()
auth_result = graphene.String()
auth_fail_cause = graphene.String()
plain_email = graphene.String()

**graphql\queries.py**

import graphene

from models.customers import CustomerLogin
from graphql.types import CustomerLoginType


class Query(graphene.ObjectType):

all_customer_logins = graphene.List(CustomerLoginType)
single_customer_login = graphene.Field(CustomerLoginType, id=graphene.Int())

@staticmethod
async def resolve_all_customer_logins(parent, info):
users = await CustomerLogin.all()
return users

@staticmethod
async def resolve_single_customer_login(parent, info, id):
user = await CustomerLogin.get(id=id)
return user

Then the ORM model using TortoiseORM

**models\customers.py**

from tortoise import fields
from tortoise.contrib.pydantic import pydantic_model_creator
from tortoise.models import Model

from models.events import ShardID, SequenceNum


class CustomerLogin(Model):
shard_id: fields.ForeignKeyNullableRelation[ShardID] = \
fields.ForeignKeyField(model_name='models.ShardID',
related_name='customerlogin_shardid',
to_field='shard_id',
on_delete=fields.RESTRICT,
null=True)
seq_num: fields.ForeignKeyNullableRelation[SequenceNum] = \
fields.ForeignKeyField(model_name='models.SequenceNum',
related_name='customerlogin_seqnum',
to_field='seq_num',
on_delete=fields.RESTRICT,
null=True)
event_timedate = fields.DatetimeField(null=True)
user_id = fields.UUIDField(null=True)
device_token = fields.UUIDField(null=True)
user_ip = fields.CharField(256, null=True)
user_agent = fields.CharField(1024, null=True)
client_id = fields.CharField(256, null=True)
process = fields.CharField(256, null=True)
auth_result = fields.CharField(256, null=True)
auth_fail_cause = fields.CharField(256, null=True)
plain_email = fields.CharField(256, null=True)


CustomerLogin_Pydantic = pydantic_model_creator(CustomerLogin, name='CustomerLogin')
CustomerLogin_PydanticIn = pydantic_model_creator(CustomerLogin, name='CustomerLoginIn', exclude_readonly=True)

Ví dụ bao gồm graphql/mutations.py, graphql/types.py, graphql/queries.py và models/customers.py, sử dụng pydantic_model_creator của TortoiseORM; trước tiên hãy lần theo cách Graphene ObjectTypes và các đối số của mutation hiện được khai báo. Hãy xác định tích hợp FastAPI/Pydantic được hỗ trợ và các tiêu chí hoàn thành của nó trước khi đề xuất triển khai, vì issue không nêu một entry point mục tiêu hoặc các bài kiểm thử.

Do mô hình lập chỉ mục viết ra từ nội dung của issue.