Node.js 使用sequelize newCourse.setCategory不是一个函数

我正在对课程和类别具有m-t-m关系的课程进行crud操作 我的模型是两个独立的文件

课程模式

const Sequelize = require('sequelize')
const sequelize = require('../database/connection')
const UserModel = require('./User')
const CategoryModel = require('./Category')

const Course = sequelize.define('Course', {
  id: {
    type: Sequelize.UUIDV4,
    primaryKey: true,
    defaultValue: Sequelize.UUIDV1
  },
  name: Sequelize.STRING(15),
  description: Sequelize.TEXT,
  points: Sequelize.INTEGER,
  image: Sequelize.STRING,
  createdAt: Sequelize.DATE,
  updatedAt: Sequelize.DATE,
}, {
  tableName: 'courses'
})

Course.belongsToMany(UserModel, { through: "CoursesUsers" });
Course.belongsToMany(CategoryModel, { through: "CategoryCourses" });
CategoryModel.belongsToMany(Course, { through: "CategoryCourses"  });


module.exports = Course

'use strict';
const {
  Model
} = require('sequelize');
module.exports = (sequelize, DataTypes) => {
  class CategoryCourse extends Model {
    /**
     * Helper method for defining associations.
     * This method is not a part of Sequelize lifecycle.
     * The `models/index` file will call this method automatically.
     */
    static associate(models) {
      // define association here
    }
  };
  CategoryCourse.init({
    id: {
      type: Sequelize.UUIDV4,
      primaryKey: true,
      defaultValue: Sequelize.UUIDV1
    },
    courseId: DataTypes.UUID,
    categoryId: DataTypes.UUID
  }, {
    sequelize,
    modelName: 'CategoryCourse',
  });
  return CategoryCourse;
};

类别模型

const Sequelize = require('sequelize')
const sequelize = require('../database/connection')

const Category = sequelize.define('Category', {
  id: {
    type: Sequelize.UUIDV4,
    primaryKey: true,
    defaultValue: Sequelize.UUIDV1
  },
  name: Sequelize.STRING(15),
  createdAt: Sequelize.DATE,
  updatedAt: Sequelize.DATE,
}, {
  tableName: 'categories'
})

module.exports = Category

类别课程模式

const Sequelize = require('sequelize')
const sequelize = require('../database/connection')
const UserModel = require('./User')
const CategoryModel = require('./Category')

const Course = sequelize.define('Course', {
  id: {
    type: Sequelize.UUIDV4,
    primaryKey: true,
    defaultValue: Sequelize.UUIDV1
  },
  name: Sequelize.STRING(15),
  description: Sequelize.TEXT,
  points: Sequelize.INTEGER,
  image: Sequelize.STRING,
  createdAt: Sequelize.DATE,
  updatedAt: Sequelize.DATE,
}, {
  tableName: 'courses'
})

Course.belongsToMany(UserModel, { through: "CoursesUsers" });
Course.belongsToMany(CategoryModel, { through: "CategoryCourses" });
CategoryModel.belongsToMany(Course, { through: "CategoryCourses"  });


module.exports = Course

'use strict';
const {
  Model
} = require('sequelize');
module.exports = (sequelize, DataTypes) => {
  class CategoryCourse extends Model {
    /**
     * Helper method for defining associations.
     * This method is not a part of Sequelize lifecycle.
     * The `models/index` file will call this method automatically.
     */
    static associate(models) {
      // define association here
    }
  };
  CategoryCourse.init({
    id: {
      type: Sequelize.UUIDV4,
      primaryKey: true,
      defaultValue: Sequelize.UUIDV1
    },
    courseId: DataTypes.UUID,
    categoryId: DataTypes.UUID
  }, {
    sequelize,
    modelName: 'CategoryCourse',
  });
  return CategoryCourse;
};

在我的控制器中，我正在创建新课程，然后调用

newCourse.setCategory（body.categories）

---

设置类别，但我收到了以下错误newCourse.setCategory不是一个函数

看看newCourse有哪些方法。它有setCategories还是addCategories，例如？我在想这个问题，但是idk如何检查它的方法+找出它是否在那里没有帮助我知道它不在那里，但是idk为什么：/你可以在你得到新课程的那一行设置一个断点，看看新课程的内容我确实把它记录到了控制台上，它没有任何设置的方法，但我不知道为什么会这样我的模型工作得很好，但关系破裂了。显示一个创建新课程的代码