Laravel has a new "whereRelation" method that allows you to query the relation directly without passing much data like the previous "whereHas" method.
Below are the code examples of how to simplify querying a modal relationship that has a specific condition.
Using "whereHas" function can allow you to query a model to check the condition of the relationship model and it works by passing the "relation" as the first param and closure as the second param to check the condition.
Below are the code examples of how to simplify querying a modal relationship that has a specific condition.
Laravel whereHas Method
Using "whereHas" function can allow you to query a model to check the condition of the relationship model and it works by passing the "relation" as the first param and closure as the second param to check the condition.
<?php
Article::query()
->whereHas('comments', function ($query) {
$query->where('article_id', 1);
})
->get();Laravel whereHas Method with Anonymous Function
With PHP 7.4 you can make use of the arrow function to simplify the closure definition. This makes the closure into a one-liner and can be considered to be more straightforward.
<?php
Article::query()
->whereHas('comments', fn ($query) => $query->where('article_id', 1))
->get();Laravel whereRelation Method
With the new "whereRelation" method now you can pass in the foreign key of the relationship into the second parameter and the "id" as the third parameter.
<?php
Article::query()
->whereHas('comments', 'article_id', 1)
->get();
