Laravel 9 One To Many Polymorphic Relationship

Websolutionstuff | Apr-05-2022 | Categories : Laravel PHP

In this article, we will see laravel 9 one to many polymorphic relationship. A one-to-many polymorphic relation is similar to a typical one-to-many relation. The child model can belong to more than one type of model using a single association. One to many polymorphic relationship is used when a model belongs to more than one other model on a single association model.

So, let's see laravel 9 polymorphic, one to many polymorphic laravel 9, polymorphic relationship laravel 9 example, laravel 9 relationships, morphMany in laravel 9, morphTo in laravel 9.

For example, users of your application can comment on posts and videos. Using polymorphic relationships, you may use a single comments table to contain comments for both posts and videos. using morphMany() and morphTo() you can access data.

In this example, we will create posts, comments, and videos tables. All tables are connected with each other like the below screenshot and we are creating migration and model all tables and retrieving data using one to many polymorphic relationships in laravel 6, laravel 7, laravel 8.

laravel_9_one_to_many_polymorphic_relationship

 

 

Create Migration :

Now, we will create migration for posts, comments, and videos table. and add foreign key in the posts and videos table.

Post Table :

Schema::create('posts', function (Blueprint $table) {

    $table->increments('id');

    $table->string("name");

    $table->timestamps();

});

Comment Table :

Schema::create('comments', function (Blueprint $table) {

    $table->increments('id');

    $table->text("comments");

    $table->integer('commentable_id');

    $table->string("commentable_type");

    $table->timestamps();

});

Video Table :

Schema::create('videos', function (Blueprint $table) {

    $table->increments('id');

    $table->string("title");

    $table->timestamps();

});

 

 

Create Model :

Now, we will create Post, Comment, and Video model.

Post Model :

class Post extends Model
{
    /**
     * Get all of the post's comments.
     */
    public function comments()
    {
        return $this->morphMany(Comment::class, 'commentable');
    }
}

Comment Model :

class Comment extends Model
{
    /**
     * Get the parent commentable model (post or video).
     */
    public function commentable()
    {
        return $this->morphTo();
    }
}

Video Model :

class Video extends Model
{
    /**
     * Get all of the video's comments.
     */
    public function comments()
    {
        return $this->morphMany(Comment::class, 'commentable');
    }
}

 

 

Retrieve Record :

Once your database table and models are defined, you may access the relationships via your model's dynamic relationship properties. For example, to access all of the comments for a post, we can use the comments property.

$post = Post::find(1);

foreach ($post->comments as $comment) {
    //
}

You may also retrieve the parent of a polymorphic child model by accessing the name of the method like the below code.

$comment = Comment::find(1);

$commentable = $comment->commentable;

 

Create Record :

Now, we will give you an example of creating the record for one to many polymorphic relationships like the below code. 

$post = Post::find(1);	
 
$comment = new Comment;
$comment->comments = "this is test comments from websolutionstuff";
 
$post->comments()->save($comment);

 


You might also like :

Recommended Post
Featured Post
How to Image Upload with Preview in Angular 17
How to Image Upload with Previ...

In this article, we'll see how to image upload with a preview in angular 17. Here, we'll learn about the an...

Read More

Apr-01-2024

Laravel 9 Socialite Login With Twitter Account
Laravel 9 Socialite Login With...

In this article, we will see laravel 9 socialite login with twitter account. Many websites provide different t...

Read More

Nov-12-2022

How To Create Dynamic Pie Chart In Laravel 8
How To Create Dynamic Pie Char...

In this article, we will see how to create a dynamic pie chart in laravel 8. Pie charts are used to represent...

Read More

Oct-02-2020

Laravel 10 Select2 Autocomplete Search Using Ajax
Laravel 10 Select2 Autocomplet...

In this article, we will see laravel 10 select2 autocomplete search using ajax. Here, we will learn about sele...

Read More

Apr-10-2023