快递js中的hasmany不能与续集一起使用

Question

我已经创建了模型技能和成员

会员表：

id  username    password    created
1   gagandeep   99703dd91da5b0cabf496d49af0ab03c2dfe7788    2017-08-14 05:59:46

技能表：

id  member_id   skill
1   1   programming
2   1   music

代码：

型号

var Member=Seq.define('members',{}, {});
var Skills=Seq.define('skills',{}, {});
Member.hasMany(Skills,{as: 'skills', through: 'skills', foreignKey:'member_id'});

呼叫：

router.route('/test').get(function(req, resp){
    Member.findAll({include: [{model: Skills}]},{
            raw:true
        }).success(onSuccess).error(onError);

        function onSuccess(data){
            resp.json(data);
        }

        function onError(data){
            resp.json(data);
        }
});

但 Node js 显示错误如下：

错误：技能未与成员关联！在 DAOFactory.validateIncludedElement (C:\Users\promatics\Desktop\netpar\node_modules\sequelize\lib\dao-factory.js:1476:13) 在 DAOFactory.validateIncludedElements (C:\Users\promatics\Desktop\netpar\node_modules\ sequelize\lib\dao-factory.js:1388:59) 在 DAOFactory.module.exports.DAOFactory.findAll (C:\Users\promatics\Desktop\netpar\node_modules\sequelize\lib\dao-factory.js:458: 34) 在 Object.handle (C:\Users\promatics\Desktop\netpar\demo.js:72:9) 在 next_layer (C:\Users\promatics\Desktop\netpar\node_modules\express\lib\router\route. js:103:13) 在 Route.dispatch (C:\Users\promatics\Desktop\netpar\node_modules\express\lib\router\route.js:107:5) 在 C:\Users\promatics\Desktop\netpar\ node_modules\express\lib\router\index.js:195:24 在 Function.proto.process_params (C:\Users\promatics\Desktop\netpar\node_modules\express\lib\router\index.js:251:12) 在下一个 (C:\Users\promatics\Desktop\netpar\node_modules\express\lib\router\index.js:189:19) 在下一个 (C:\Users\promatics\Desktop\netpar\node_modules\exp ress\lib\router\index.js:166:38)

Answer 1

您实际上并不需要 through 语句。仅当您通过联结表在两个表之间建立关联时，才使用 through。我会在这里做的是......

var Member = Seq.define('members', {
  // Some attributes...
});

var Skills = Seq.define('skills', {
  // Some attributes...
});

Member.hasMany(Skills, {
  as: 'skills', 
  // Remove `through`!
  foreignKey: 'member_id'
});

// Want to query for all members with the skills joined?
Member.findAll({
  include: {
    model: Skills,
    as: 'skills'
  }
});

这应该会为您提供您正在寻找的结果。每个member 对象都将引用一个内部skills 键，该键是与用户关联的技能数组。

祝你好运:)