Flask-restful Request parsing

Basic parameters

 fromFlaskImportFlask fromFlask.ext.restfulImportreqparse, Abort, Api, Resourceapp= Flask (__name__) API=Api (APP) TODOS= {'Todo1': {'Task':'Build an API'},    'Todo2': {'Task':'?????'},    'Todo3': {'Task':'profit!'},}parser=Reqparse. Requestparser () parser.add_argument ('Task', Type=str, help='Rate cannot be converted') parser.add_argument (' Rate', type=int)defabort_if_todo_doesnt_exist (todo_id):iftodo_id not inchTodos:abort (404, message="Todo {} doesn ' t exist". Format (todo_id))#ToDoList#shows a list of all Todos, and lets your POST to add new tasksclasstodolist (Resource):defGet (self):returnTODOSdefpost (self): args=Parser.parse_args () todo_id= Int (max (Todos.keys ()). Lstrip ('Todo')) + 1todo_id='todo%i'%todo_id todos[todo_id]= {'Task': args['Task']}        returnTODOS[TODO_ID], 201#### actually setup the API resource routing here##Api.add_resource (ToDoList,'/todos')if __name__=='__main__': App.run (Debug=true)

Key code

Parser = Reqparse. Requestparser () parser.add_argument ('task', type=str, help='rate Cannot is converted') parser.add_argument ('rate', type=  = Parser.parse_args ()

The help information is specified and is rendered as an error message when parsing the type error, otherwise the default returns the error of the type error itself.

Required Parameters

Add condition

whole2.py

 fromFlaskImportFlask fromFlask.ext.restfulImportreqparse, Abort, Api, Resourceapp= Flask (__name__) API=Api (APP) TODOS= {'Todo1': {'Task':'Build an API'},    'Todo2': {'Task':'?????'},    'Todo3': {'Task':'profit!'},}parser=Reqparse. Requestparser () parser.add_argument ('Task', Type=str, help='Rate cannot be converted') parser.add_argument (' Rate', Type=int, required=Ture)defabort_if_todo_doesnt_exist (todo_id):iftodo_id not inchTodos:abort (404, message="Todo {} doesn ' t exist". Format (todo_id))#ToDoList#shows a list of all Todos, and lets your POST to add new tasksclasstodolist (Resource):defGet (self):returnTODOSdefpost (self): args=Parser.parse_args () todo_id= Int (max (Todos.keys ()). Lstrip ('Todo')) + 1todo_id='todo%i'%todo_id todos[todo_id]= {'Task': args['Task']}        returnTODOS[TODO_ID], 201#### actually setup the API resource routing here##Api.add_resource (ToDoList,'/todos')if __name__=='__main__': App.run (Debug=true)

Key code

Parser.add_argument (' rate ', Type=int, Required=ture)

Run

Python whole2.py

Another window executes

[Email protected]:~/project/flask$ Curl 127.0.0.1:5000/todos-d task=hello-x post{    "message": {        "rate": " Missing required parameter in the JSON body or the post body or the query string "    }}

Add the rate parameter and then execute it, OK.

[Email protected]:~/project/flask$ Curl 127.0.0.1:5000/todos-d task=hello-d rate=3-x post{    "task": "Hello"}

Multiple Values & lists

whole3.py

 fromFlaskImportFlask fromFlask.ext.restfulImportreqparse, Abort, Api, Resourceapp= Flask (__name__) API=Api (APP) TODOS= {'Todo1': {'Task':'Build an API'},    'Todo2': {'Task':'?????'},    'Todo3': {'Task':'profit!'},}parser=Reqparse. Requestparser () parser.add_argument ('Task', Type=str, action='Append')defabort_if_todo_doesnt_exist (todo_id):iftodo_id not inchTodos:abort (404, message="Todo {} doesn ' t exist". Format (todo_id))#ToDoList#shows a list of all Todos, and lets your POST to add new tasksclasstodolist (Resource):defGet (self):returnTODOSdefpost (self): args=Parser.parse_args () todo_id= Int (max (Todos.keys ()). Lstrip ('Todo')) + 1todo_id='todo%i'%todo_id todos[todo_id]= {'Task': args['Task']}        returnTODOS[TODO_ID], 201#### actually setup the API resource routing here##Api.add_resource (ToDoList,'/todos')if __name__=='__main__': App.run (Debug=true)

Perform

Python whole3.py

Another window executes

[Email protected]:~/project/flask$ Curl 127.0.0.1:5000/todos-d task=hello-d task=hello2-d task=hello4-x POST{    "ta SK ": [        " Hello ",         " Hello2 ",         " Hello4 "    ]}

Browser Open Results

{"    Todo1": {        "task": "Build an API"    },     "Todo2": {        "task": "?????"    },     "Todo3": {        "Task": "Profit!"    },     "Todo4": {"        task": [            "Hello",             "Hello2",             "Hello4"        ]    } }

Parameter position

Pending resolution: HTTP://WWW.PYTHONDOC.COM/FLASK-RESTFUL/REQPARSE.HTML#ID5

　　

　　

Flask-restful Request resolution