Can it posiible to take db queries in controller folder to model folder and how to call it in controller

问题

full folder link : https://github.com/rashmiranjanrrs/todo-app-in-MVC-Architechture app/controller/UserController

from flask import request, jsonify
from app import db
from app.model.Task import Task
from app.model.User import User

import datetime
from flask_httpauth import HTTPBasicAuth

auth = HTTPBasicAuth()

class TaskController:

    @auth.get_password
    def pass_auth(username):
        user = User.query.filter_by(username=username).first()
        if user is not None:
            return user.password
        else:
            return None

    @auth.login_required
    def addtask():
        data = request.get_json()
        content = data['content']
        task = Task(content, user=User.query.filter_by(username=auth.username()).first())
        db.session.add(task)
        db.session.commit()
        return jsonify({
            'username': auth.username(),
            'task-id': task.id,
            'content': task.content
        })

    @auth.login_required
    def markdone():
        data = request.get_json()
        task_id = data['task_id']
        task = Task.query.get(task_id)
        if task is None:
            return jsonify({
                'status': 'Failed'
            })
        task.done = True
        task.end_date = datetime.datetime.now()
        db.session.commit()
        return jsonify({
            'content': task.content,
            'add_date': task.add_date,
            'end_date': task.end_date,
            'task_completed': task.done
        })

    @auth.login_required
    def deletetask():
        data = request.get_json()
        task_id = data['task_id']
        task = Task.query.filter_by(id=task_id).first()
        if not task:
            return jsonify({'message': 'No task found!'})

        deleted_task = jsonify({
            'status': 'success',
            'task_id': task.id,
            'content': task.content,
            'task_completed': task.done
        })
        db.session.delete(task)
        db.session.commit()
        return deleted_task

    @auth.login_required
    def alltasks():
        user = User.query.filter_by(username= auth.username()).first()
        if user is None:
            return jsonify({
                'status': 'failed'
            })
        task_list = {}
        for task in user.tasks:
            task_list[task.id] = {'content': task.content,
                                  'add_date': task.add_date,
                                  'task_completed': task.done}
        return jsonify(task_list)

app/model/Task

Define your CRUD operations related to TASK table here Use the database connection from Database service in this Task constructor, so that it will available in all TASK crud operations CRUD means -> Create, Read, Update, Delete actions for a table.

来源：https://stackoverflow.com/questions/58197366/can-it-posiible-to-take-db-queries-in-controller-folder-to-model-folder-and-how