CODEWITHSUNDEEP
mysqlruby-on-railsruby
JaMes
JaMes

Reputation: 607

Access data from a join table

I would like to select a user's groups where the join table is marked with favorit: true.

I have User which has Groups through a join table named UsersGroup. The UsersGroup model have the variables group_id and user_id, but also a variable favorit.

I would like to call the favorit groups of my users. But I don't know how to write it.

I've tried something like this :

current_user.groups.joins(:users_group).where(:users_group => { :favorit => true })

& 

current_user.groups.where(users_group.favorit == true)

Do you have a solution for this kind of requests?

Upvotes: 2

Views: 32

Answers (1)

SRack
SRack

Reputation: 12203

You can use:

current_user.user_groups.where(favorit: true)

If you want to access the groups from this, you can get the group from the user_groups found above. I.E.

favorits = current_user.user_groups.where(favorit: true).includes(:group)
favorits.map(&:group)

Notice the includes in there to eager load the groups and avoid any N + 1 issues.

Does that do what you're looking for?

Upvotes: 1

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