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我将 Python Ariadne 与 Flask 框架一起使用，除了 Ariadne 游乐场无法访问服务器之外，一切似乎都很好，这很奇怪，因为游乐场是从同一个开发服务器加载的。下面是错误的屏幕截图。您还可以在此链接上查看类似的错误。

Ariadne 错误截图] 2

以下是相关的代码文件：

在里面

from flask import Flask
from flask_cors import CORS
from flask_sqlalchemy import SQLAlchemy
from flask_migrate import Migrate
from dotenv import dotenv_values
import os

server = Flask(__name__)
CORS(server)

# Loads DB env variables
config = dotenv_values(".flaskenv")

# Database configuration
server.config[
    "SQLALCHEMY_DATABASE_URI"
] = f"postgresql://{config['DB_USERNAME']}:{config['DB_PASSWORD']}@fanny.db.elephantsql.com/xdmriqqe"
server.config["SQLALCHEMY_TRACK_MODIFICATIONS"] = True

# Application extensions
db = SQLAlchemy(server)
migrate = Migrate(server, db)

# Application views (uses blueprint)
from app.views import bp

server.register_blueprint(bp)

# Database models
import app.models

GraphQL 架构

type TodoList {
    id: ID!
    itemName: String!
    sublist: [TodoList!]
}

type TodoListResult {
    success: String!
    error: [String]
    todoList: TodoList
}

type Query {
    todoList: [TodoListResult!]
}
type Mutation {
    updateTodoItem(id: ID!, itemName: String!): TodoListResult!
    deleteTodoItem(id: ID!): TodoListResult!
}
schema {
    query: Query
    mutation: Mutation
}

解析器

from datetime import date
from ariadne import convert_kwargs_to_snake_case
from app.models import TodoList


def list_todos_resolver(*_):
    try:
        todos = [todo.to_dict() for todo in TodoList]
        payload = {"success": True, "todos": todos}
    except Exception as error:
        raise error
        # payload {"success":False, "error":[str(error)]}

    return payload


@convert_kwargs_to_snake_case
def update_todos_item_resolver(*_, id, itemName):
    pass


@convert_kwargs_to_snake_case
def delete_todos_item_resolver(*_, id):
    pass

意见*

from app import server

from flask import Blueprint, request, jsonify
from ariadne.constants import PLAYGROUND_HTML
from ariadne import (
    ObjectType,
    graphql_sync,
    snake_case_fallback_resolvers,
    load_schema_from_path,
    make_executable_schema,
)
from app.api.resolvers import (
    list_todos_resolver,
    update_todos_item_resolver,
    delete_todos_item_resolver,
)

bp = Blueprint("views", __name__, url_prefix="/api")

# GraphQL schema type definitions
graphql_type_defs = load_schema_from_path("app/api/column.graphql")

# Binds resolver to graphQL Query Type
query = ObjectType("Query")
query.set_field("todoList", list_todos_resolver)

# Binds resolver to graphQL Mutation Type
query = ObjectType("Mutation")
query.set_field("updateTodoItem", update_todos_item_resolver)
query.set_field("deleteTodoItem", delete_todos_item_resolver)

# Bind and execute type definition to query
schema = make_executable_schema(graphql_type_defs, query, snake_case_fallback_resolvers)


@bp.route("/", methods=["GET"])
def client():
    return PLAYGROUND_HTML, 200


@bp.route("/", methods=["POST"])
def api():
    data = request.get_json()

    success, result = graphql_sync(
        schema, data, context_value=request, debug=server.debug
    )

    status_code = 200 if success else 400

    return jsonify(data), status_code
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