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Example code of pellesam/laravel-cascade-soft-delete-and-restore

Informations about the package laravel-cascade-soft-delete-and-restore

Cascading soft delete and restore for the Laravel PHP Framework

Introduction

In scenarios when you delete a parent record - say for example a blog post - you may want to also delete any comments associated with it as a form of self-maintenance of your data.

Normally, you would use your database's foreign key constraints, adding an ON DELETE CASCADE rule to the foreign key constraint in your comments table.

It may be useful to be able to restore a parent record after it was deleted. In those instances, you may reach for Laravel's soft deleting functionality.

In doing so, however, you lose the ability to use the cascading delete functionality that your database would otherwise provide. That is where this package aims to bridge the gap in functionality when using the SoftDeletes trait.

Code Samples

Now you can delete an App\Post record, and any associated App\Comment records will be deleted. If the App\Comment record implements the CascadeSoftDeleteAndRestore trait as well, it's children will also be deleted and so on.

Note: It's important to know that when you cascade your soft deleted child records, there is no way to know which were deleted by the cascading operation, and which were deleted prior to that. This means that when you restore the blog post, the associated comments will not be.

Because this trait hooks into the deleting Eloquent model event, we can prevent the parent record from being deleted as well as any child records, if any exception is triggered. A LogicException will be triggered if the model does not use the Illuminate\Database\Eloquent\SoftDeletes trait, or if any of the defined cascadeDeletes relationships do not exist, or do not return an instance of Illuminate\Database\Eloquent\Relations\Relation.

Additional Note: If you already have existing event listeners in place for a model that is going to cascade soft deletes, you can adjust the priority or firing order of events to have CascadeSoftDeleteAndRestore fire after your event. To do this you can set the priority of your deleting event listener to be 1.

MODEL::observe( MODELObserver::class, 1 ); The second param is the priority.

MODEL::deleting( MODELObserver::class, 1 );

As of right now this is not documented in the Larvel docs, but just know that the default priority is 0 for all listeners, and that 0 is the lowest priority. Passing a param of greater than 0 to your listener will cause your listener to fire before listeners with default priority of 0

Installation

This trait is installed via Composer. To install, simply add to your composer.json file:

All versions of laravel-cascade-soft-delete-and-restore with dependencies

PHP Build Version
Package Version
Requires php Version ^7.3|^8.0
illuminate/database Version ^8.12|^9.0
illuminate/events Version ^8.12|^9.0
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