前言
flask 管理一个大的项目时，可以把项目分为几个不同的应用，通过蓝图来管理。 flask 里面的蓝图 相当于 django 的app。
蓝图基本使用
在视图部分使用蓝图
代码语言：javascript复制from flask import Blueprint
from flask_restx import Api
blueprint = Blueprint('api', __name__)
api = Api(blueprint)
# ...使用蓝图绑定到app上
代码语言：javascript复制from flask import Flask
from apis import blueprint as api
app = Flask(__name__)
app.register_blueprint(api, url_prefix='/api/1')
app.run(debug=True)需注意的地方
代码语言：javascript复制笔记
Api.init_app()此处不需要调用，因为向应用程序注册蓝图会负责为应用程序设置路由。
使用蓝图时，请记住使用蓝图名称url_for()：
# without blueprint
url_for('my_api_endpoint')
# with blueprint
url_for('api.my_api_endpoint')使用蓝图的代码示例
官方文档上的代码示例
代码语言：javascript复制from flask import Flask, Blueprint
from flask_restx import Api, Resource, fields
api_v1 = Blueprint("api", __name__, url_prefix="/api/1")
api = Api(api_v1, version="1.0", title="Todo API", description="A simple TODO API",)
ns = api.namespace("todos", description="TODO operations")
TODOS = {
"todo1": {"task": "build an API"},
"todo2": {"task": "?????"},
"todo3": {"task": "profit!"},
}
todo = api.model(
"Todo", {"task": fields.String(required=True, description="The task details")}
)
listed_todo = api.model(
"ListedTodo",
{
"id": fields.String(required=True, description="The todo ID"),
"todo": fields.Nested(todo, description="The Todo"),
},
)
def abort_if_todo_doesnt_exist(todo_id):
if todo_id not in TODOS:
api.abort(404, "Todo {} doesn't exist".format(todo_id))
parser = api.parser()
parser.add_argument(
"task", type=str, required=True, help="The task details", location="form"
)
@ns.route("/<string:todo_id>")
@api.doc(responses={404: "Todo not found"}, params={"todo_id": "The Todo ID"})
class Todo(Resource):
"""Show a single todo item and lets you delete them"""
@api.doc(description="todo_id should be in {0}".format(", ".join(TODOS.keys())))
@api.marshal_with(todo)
def get(self, todo_id):
"""Fetch a given resource"""
abort_if_todo_doesnt_exist(todo_id)
return TODOS[todo_id]
@api.doc(responses={204: "Todo deleted"})
def delete(self, todo_id):
"""Delete a given resource"""
abort_if_todo_doesnt_exist(todo_id)
del TODOS[todo_id]
return "", 204
@api.doc(parser=parser)
@api.marshal_with(todo)
def put(self, todo_id):
"""Update a given resource"""
args = parser.parse_args()
task = {"task": args["task"]}
TODOS[todo_id] = task
return task
@ns.route("/")
class TodoList(Resource):
"""Shows a list of all todos, and lets you POST to add new tasks"""
@api.marshal_list_with(listed_todo)
def get(self):
"""List all todos"""
return [{"id": id, "todo": todo} for id, todo in TODOS.items()]
@api.doc(parser=parser)
@api.marshal_with(todo, code=201)
def post(self):
"""Create a todo"""
args = parser.parse_args()
todo_id = "todo%d" % (len(TODOS) 1)
TODOS[todo_id] = {"task": args["task"]}
return TODOS[todo_id], 201
if __name__ == "__main__":
app = Flask(__name__)
app.register_blueprint(api_v1)
app.run(debug=True)更多代码参考githubhttps://github.com/python-restx/flask-restx/tree/master/examples
2022年第 12期《python接口web自动化 测试开发》课程，9月17号开学!
本期上课时间：2022年9月17号 - 2022年12月17号，周六周日上午9:00-11:00
