Using a presenter on attributes in a pivot table in Laravel

Question

I'm just wondering how to go about implementing the Presenter pattern for attributes inside of a pivot table? For example, consider this code (it's just an example and is not a replication of my actual code):

@foreach($users->comments as $comment)
 <h1>{{ $comment->title }}</h1> // calls 'title()' in CommentPresenter
 <p>{{ $comment->body }}</p> // calls 'body()' in CommentPresenter...
 <p>{{ is_null($comment->pivot->deleted_at) ? '' : '[REMOVED]' :}} // Where can I put this???
@endforeach

Where can I put that final attributes presenting method? Bearing in mind I also want to be able to use the inverse of this relation.

Any help greatly appreciated

Thanks!

Answer 1

You can override newPivot in your models and then use your own Pivot model. It will be treated mostly like a "normal" Eloquent model so the auto presenter package should work.

Comment model

public function newPivot(Model $parent, array $attributes, $table, $exists)
{
    if($parent instanceof User){
        return new CommentUserPivot($parent, $attributes, $table, $exists);
    }
    return parent::newPivot($parent, $attributes, $table, $exists);
}

User model

public function newPivot(Model $parent, array $attributes, $table, $exists)
{
    if($parent instanceof Comment){
        return new CommentUserPivot($parent, $attributes, $table, $exists);
    }
    return parent::newPivot($parent, $attributes, $table, $exists);
}

CommentUserPivot model

class CommentUserPivot extends \Illuminate\Database\Eloquent\Relations\Pivot {
    // presenter stuff
}

Answer 2

You could use the Laravel Auto Present package for this. It will allow you to implement a presenter class on the model with specific methods to override the models normal data properties. However, I don't believe this will format the data on the way in to the model (if that's what you mean by inverse).

https://github.com/ShawnMcCool/laravel-auto-presenter