how to implement sub model in Laravel

Question

my base class is post and many submodel such as : video post , image post all class have specific attribute & inherit parent attrib & all class need specific behaviors

Problem

when find on post model elequent give super model(post) instance, its wrong i need instance of submodel

It is very unclear what you want to do. Please provide some more info and code examples. — Jerodev, Nov 25 '15 at 16:00
basically a model that shares attribute but had more details added on child model? this could be done several ways, simple eloquent (still uses **single main model**) or single table inheritance (uses **several main model** on one table). — Bagus Tesa, Nov 25 '15 at 16:31

score 0 · Answer 1 · answered Nov 25 '15 at 16:09

If I understood you correctly, you need relationships

Add a hasMany relationship to your Post.php model:

public function videos()
    return $this->hasMany(App\PostVideo::class);
}

As long as your post_video table has a post_id column that references a post, you can call this relationship like this:

foreach($post->videos as $video) {
    // Do something
}

And the inverse relationship:

Add a relationship to your PostVideo.php model:

public function post() {
    return $this->belongsTo(App\Post::class);
}

And of course, if you have a video, you can access the post it belongs to by doing:

$video->post

score 0 · Answer 2 · edited May 23 '17 at 12:30

It is looked like you want a single table inheritance. In laravel this could be done manually or use package like nanigans or intrip. To use single table inheritance manually, i could suggest you start with reading this stackoverflow question first. However, notice that single table inheritance put everything in a single table but refered by several models that have different behavior. If this is not what you want, just use simple eloquent queries and models - which already explained by Pistachio.

how to implement sub model in Laravel

2 Answers2