多对多关联不返回关联 table

Question

我正在尝试向用户添加 'roles' - 每个用户可以有多个角色，并且角色不限于多个用户 - 可以根据需要将它们分配给任意数量的用户。我学习了一些教程，通读了很多 Whosebug questions/answers，但似乎仍然无法正常工作。

user.model.js

'use strict';
const { Model } = require('sequelize');
const PROTECTED_ATTRIBUTES = ['password'];

module.exports = (sequelize, DataTypes) => {
  class User extends Model {
    toJSON() {
      // hide protected fields
      const attributes = { ...this.get() };
      // eslint-disable-next-line no-restricted-syntax
      for (const a of PROTECTED_ATTRIBUTES) {
        delete attributes[a];
      }
      return attributes;
    }
    
    static associate(models) {
      User.belongsToMany(models.Role, {
        through: 'UserRoles',
        as: 'roles',
        foreignKey: 'roleId'
      });
    }
    
    
  }
  User.init({
    name: {
      type: DataTypes.STRING,
      allowNull: false,
      unique: true
    },
    email: {
      type: DataTypes.STRING,
      allowNull: false,
      unique: true
    },
    password: {
      type: DataTypes.STRING,
      allowNull: false
    },
    lastLoginAt: {
      type: DataTypes.DATE,
      allowNull: true
    },
    lastIPAddress: {
      type: DataTypes.STRING,
      allowNull: true
    }
  }, {
    sequelize,
    modelName: 'User',
    paranoid: true,
    tableName: 'users'
  });
  return User;
};

role.model.js

'use strict';
const { Model } = require('sequelize');
module.exports = (sequelize, DataTypes) => {
  class Role extends Model {
    static associate(models) {
      Role.belongsToMany(models.User, {
        through: 'UserRoles',
        as: 'users',
        foreignKey: 'userId'
      });
    }
  };
  Role.init({
    roleName: DataTypes.STRING
  }, {
    sequelize,
    modelName: 'Role',
  });
  return Role;
};

userroles.model.js

'use strict';
const { Model } = require('sequelize');
module.exports = (sequelize, DataTypes) => {
  class UserRoles extends Model {
    static associate(models) {
      // define association here
    }
  };
  UserRoles.init({
    userId: DataTypes.INTEGER,
    roleId: DataTypes.INTEGER
  }, {
    sequelize,
    modelName: 'UserRoles',
  });
  return UserRoles;
};

user.controller.js

async function getUsers(req, res, next) {
    const name = req.query.name;
    const condition = name ? { name: { [Op.like]: `%${name}%` } } : null;
    
    User.findAll({ where: condition, include: { model: Role, as: 'roles'} })
        .then(data => {
            res.send(data);
        })
        .catch(err => {
            const error = new createError(500, 'Some error occurred while retrieving users.');
            return next(error);
        });
}

查询 returns 一个 'roles' 数组，但其中没有任何内容，即使 UserRoles table 已分配给现有用户和现有角色的条目。

它生成的查询，以防有帮助：

 SELECT "User"."id", "User"."name", "User"."email", "User"."password", "User"."lastLoginAt", "User"."lastIPAddress", "User"."createdAt", "User"."updatedAt", "User"."deletedAt", "roles"."id" AS "roles.id", "rol
es"."roleName" AS "roles.roleName", "roles"."createdAt" AS "roles.createdAt", "roles"."updatedAt" AS "roles.updatedAt", "roles->UserRoles"."userId" AS "roles.UserRoles.userId", "roles->UserRoles"."roleId" AS "roles.UserRoles.role
Id", "roles->UserRoles"."createdAt" AS "roles.UserRoles.createdAt", "roles->UserRoles"."updatedAt" AS "roles.UserRoles.updatedAt" FROM "users" AS "User" LEFT OUTER JOIN ( "UserRoles" AS "roles->UserRoles" INNER JOIN "role" AS "ro
les" ON "roles"."id" = "roles->UserRoles"."roleId") ON "User"."id" = "roles->UserRoles"."roleId" WHERE ("User"."deletedAt" IS NULL);

Answer 1

role.model.js

'use strict';
const {Model} = require('sequelize');
module.exports = (sequelize, DataTypes) => {
    class Role extends Model {
        static associate(models) {
            //...
            Role.belongsToMany(models.UserRoles, {
                as: 'userRoles',
                foreignKey: 'roleId',
            });
        }
    }
    // ...
    return Role;
};

User.findAll({where: condition, include: {model: Role, as: 'roles', include: ['userRoles']}})
                                                                    ^^^^^^^^^^^^^^^^^^^^^^

多对多关联不返回关联 table

Many to many association not returning associated table

postgresql

many-to-many

node.js

sequelize.js