我将如何在 Bookshelf.js 中执行多连接查询？

Question

Basically, I have two tables: User and user_connections

User :

id | email

1 | name@domain.com

2 | name1@domain.com

user_connections :

user_id | key

1 | test1

1 | test2

2 | test3

Basically, I need to construct a query that, given the email, pulls a list of connections associated with that email's id.

I already have User defined and pointing to the User table. How would I get the required results?

---

EDIT: Here is the desired result:

If I GET with an id of 1 , then I should get the following returned (in JSON):

{
  {
    user_id: 1,
    key: test1
  },
  {
    user_id: 2,
    key: test2
  }
}

Answer 1

Use withRelated in the hash you pass to fetch . It identifies an array of column names that you must have defined in your bookshelf model.

User
    .forge()
    .where({email: "me@me.com"})
    .fetch({
        withRelated: ["user_connections"] //or however you have defined it in your model defintion
    })
    .then(function(collection) {
        collection.relations// {user_connections: [ {}, {}, ...]}
    });

Answer 2

User.query().join('user_connections','User.id','=','user_connections.user_id').where('user.email','=','abc').select('user_connections.key','user_connections.user_id').then(function(collection){
    res.json(collection);
});