#database #development #eloquent #laravel #php
Imagine you have two tables
authors. Posts table has a column
author_id which represents a
relationship on the authors table.
To get the author id of a post, we would normally do
1$post = Post::findOrFail(<post id>); 2$post->author->id;
This would result in two queries being executed.
1select * from posts where id = <post id> limit 1 2select * from authors where id = <post author id> limit 1
Instead, you can directly get the author id by doing the following.
1$post = Post::findOrFail(<post id>); 2$post->author_id; // posts table has a column author_id which stores id of the author
When can I use the above approach? You can use the above approach when you are confident that a row always exists in authors table if it is referenced in posts table.
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