Understanding onDelete cascade in laravel migrations

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gautamz07

Post subject: Understanding onDelete cascade in laravel migrations

Posted: Sat Feb 11, 2017 2:49 pm

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Joined: Wed May 14, 2014 12:18 pm
Posts: 331

I was going through this section in the laravel documentation:
https://laravel.com/docs/5.4/migrations#foreign-key-constraints

I saw the below line of code:

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$table->foreign('user_id')

      ->references('id')->on('users')

      ->onDelete('cascade');

I am not quite understanding the onDelete part , can somebody please explain that to me ?

Thank you.
Gautam.

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Celauran

Post subject: Re: Understanding onDelete cascade in laravel migrations

Posted: Sun Feb 12, 2017 9:24 am

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Joined: Tue Nov 09, 2010 3:39 pm
Posts: 6425
Location: Montreal, Canada

You have a user model. Comments belong to a user. With cascading deletes, deleting a user would also delete all their comments.

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gautamz07

Post subject: Re: Understanding onDelete cascade in laravel migrations

Posted: Sun Feb 12, 2017 12:11 pm

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Joined: Wed May 14, 2014 12:18 pm
Posts: 331

Thanks got it !

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