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Using Laravel Eloquent, you can add 'where clauses' on a relationship count condition

December 14, 2016

Eloquent provides an easy way to add a relationship count condition to a query. Say you have a User model and a Role model which are related to each other using a many-to-many relationship. Using Eloquent it is very easy to get all Users that have one or more Roles or doesn't have Roles at all:


This is really cool but there is more! You can actually add 'where clauses' to the count condition. This is handy if you want to fetch all user with a specific role, for example all admins:

UserModel::whereHas('Roles', function($query) {
    $query->where('label', 'admin');

UserModel::whereDoesntHave('Roles', function($query) {
    $query->where('label', 'admin');

I think this is a very elegant solution!