cbv.py

from flask import Blueprint, render_template, request, current_app, jsonify, session
from flask.views import MethodView, View

blueprint = Blueprint('www', __name__)


class MyView(MethodView):

    def get(self):
        return request.method

    def put(self):
        return request.method

    def post(self):
        return request.method

    def delete(self):
        return request.method


blueprint.add_url_rule('/api/counter', view_func=MyView.as_view('MyView'))