How to write Flask decorator with request?
This is how your decorator should look like
def validate_request(f): @functools.wraps(f) def decorated_function(*args, **kwargs): # Do something with your request here data = flask.request.get_json() if not data: flask.abort(404) return f(*args, **kwargs) return decorated_functionand you will call it like this
@app.route('/todo/api/v1.0/tasks/<int:task_id>', methods=['PUT'])@validate_requestdef update_task(task_id): # The rest of your code..
It's kind of an old post, but I think that it may benefit from a little correction:decorated_function needs to return f(*args, **kws)
def validate_request(f): @functools.wraps(f) def decorated_function(*args, **kws): # Do something with your request here data = flask.request.get_json() if not data: flask.abort(404) return f(*args, **kws) return decorated_functionOtherwise you will encounter TypeError: The view function did not return a valid response. The function either returned None or ended without a return statement.