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On . By CodimTh
Category:

Structure database:

posts
    id - integer
    title - string
    body - text

videos
    id - integer
    title - string
    url - string

comments
    id - integer
    body - text
    commentable_id - integer
    commentable_type - string

 

How to create Custom Polymorphic Types in Laravel:

By default, Laravel will use the fully qualified class name to store the type of the related model. For instance, given the one-to-many example above where a Comment may belong to a Post or a Video, the default commentable_type would be either App\Models\Post or App\Models\Video, respectively. However, you may wish to decouple your database from your application's internal structure. In that case, you may define a "morph map" to instruct Eloquent to use a custom name for each model instead of the class name:

use Illuminate\Database\Eloquent\Relations\Relation;

Relation::morphMap([
    'posts' => 'App\Models\Post',
    'videos' => 'App\Models\Video',
]);

You may register the morphMap in the boot function of your AppServiceProvider or create a separate service provider if you wish.

You may determine the morph alias of a given model at runtime using the getMorphClass method. Conversely, you may determine the fully-qualified class name associated with a morph alias using the Relation::getMorphedModel method:

use Illuminate\Database\Eloquent\Relations\Relation;

$alias = $post->getMorphClass();

$class = Relation::getMorphedModel($alias);

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