To check whether a model has a relation or not in Laravel, you can make use of the "has()" and "doesntHave()" methods available to every Laravel model.
Check Model has() Relation
To check if a model has a relation you can make use of this method like below. Imagine you want to know whether a post has a comment, if it does then eager load it together.
Check Model has() Relation
To check if a model has a relation you can make use of this method like below. Imagine you want to know whether a post has a comment, if it does then eager load it together.
<?php
$postHaveComments = Post::has('comments')
->with('comments')
->get();Check Model doesntHave Relation
To check if a model doesn't have a relation, then you can write it like below. The query will return only the model that doesn't have a comments.
<?php
$postHasNoComments = Post::doesntHave('comments')
->get();
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