I am using sequelize with postgreSQL and nodejs.
my database has 3 relations,
1 relation user,
1 relation link,
1 relation table user_has_link (it's a relation table between user and link) with 3 column :
my sequelize relation models beween link and user:
User.belongsToMany(Link,{
as: 'usersLinks',
through: 'user_has_link',
});
Link.belongsToMany(User,{
as: 'linksUsers',
through: 'user_has_link'
});
and finally my query to get a user informations:
const user = await User.findByPk(userId,
{
include:{
model: Link, as: 'usersLinks'
}
});
the request to database is OK, but i am missing the url_link of the user ( i don't understandt why):
for example a response of teh request:
avatarKey: "thumbnail-fce0848f-9509-4180-b7fa-c2bf908ed396.png"
email: "aviateur@ht.fr"
id: 2
login: "aviateur22"
sex: "homme"
usersLinks: Array(2)
0: {id: 1, compagny_name: 'github', picture_name: 'github.png', created_at: '2022-03-30T13:02:31.920Z', updated_at: null, …}
1: {id: 2, compagny_name: 'linkedin', picture_name: 'linkedin.png', created_at: '2022-03-30T13:02:31.920Z', updated_at: null, …}
thanks a lot for your help Cyrille
You should define a junction table model explicitly with all extra fields you need and indicate it instead of using the string user_has_link in belongsToMany, see advanced many-to-many
following advice of Anatoly, I have updated my belongToMany relation.
const UserLink = require('./userLink');
User.belongsToMany(Link,{
as: 'usersLinks',
through: UserLink,
});
I have all my data, included url_link
{
"id": 2,
"login": "aviateur22",
"email": "aviateur@hotmail.com",
"sex": "homme",
"avatarKey": "thumbnail-fce0848f-9509-4180-b7fa-c2bf908ed396.png",
"usersLinks": [
{
"id": 1,
"compagny_name": "github",
"picture_name": "github.png",
"created_at": "2022-03-30T13:02:31.920Z",
"updated_at": null,
"UserLink": {
"user_id": 2,
"link_id": 1,
"link_url": "https://github.com/aviateur22",
"created_at": "2022-03-31T07:10:32.010Z",
"updated_at": "2022-03-31T07:11:47.370Z",
"UserId": 2,
"LinkId"
thanks you