Crud: crud->addField polymorphic relationship display all elements?

[marleybobby]

I have three models. One is post the other one is image and the last one user. I have an polymorphic relation between these those.

posts
post_id - integer
title - string
description - text
.....

users
id - integer
name - string
password - string
.....

images
image_id - integer
file_id - text
file_name - string
image_type - string ['poster', 'thumbnail']
imageable_id - integer
imageable_type - string

An image in a post can either be a poster or a thumbnail. How can I display both using crud?

I tried the following, but I only receive the last one.

PostCrudController

        $this->crud->addField([
            'name'  => 'image_id',
            'label' => 'Poster',
            'type'  => 'text',
            'name' => 'image_id', // the column that contains the ID of that connected entity;
            'entity' => 'images', // the method that defines the relationship in your Model
            'attribute' => "file_name", // foreign key attribute that is shown to user
            'model' => 'App\Models\Image',
        ], 'update/create/both');

       $this->crud->addField([
            'name'  => 'image_id',
            'label' => 'Thumbnail',
            'type'  => 'image_text',
            'name' => 'image_id', // the column that contains the ID of that connected entity;
            'entity' => 'images', // the method that defines the relationship in your Model
            'attribute' => "file_name", // foreign key attribute that is shown to user
            'model' => 'App\Models\Image',
        ], 'update/create/both');

I also tried to create a function poster() where i tried to filter it with ->where('image_type', 'poster') and a counterpart for thumbnail

Post

class Post extends Model
{
    use CrudTrait;

    protected $table = 'posts';

    protected $primaryKey = 'post_id';

    protected $fillable = [];

    /**
     * A post has many images
     * @return \Illuminate\Database\Eloquent\Relations\HasMany
     */
    public function images()
    {
        return $this->morphMany(Image::class, 'imageable');
    }

}

Image

class Image extends Model
{
    use CrudTrait;

    protected $table = 'images';
    protected $primaryKey = 'image_id';

    protected $fillable = [];

    public function imageable()
    {
        return $this->morphTo();
    }
}

If I do {{ dd($fields) }} in edit.blade.php there is also only the last Field available.

[tabacitu]

Hi @marleybobby ,

Sorry for not answering sooner - I expect you've found your answer by now? If so, you can help others that search the same thing by sharing the knowledge below. This is more of a stack overflow question, so I'll close it.

Cheers!

[sakanaproductions]

@marleybobby
It seems like your polymorphic relationship isn't setup correctly. Where your images / posts need a connecting table, i.e. imageables.

@tabacitu
I am having a similar issue with polymorphic relationships with the below:

movie:
id,
title

categories:
id,
name,
color

categorizables:
category_id,
categorizable_id,
categorizable_type

my MovieCrudController.php:

$this->crud->addField([
            'label' => 'Categories',
            'name' => 'categorizable_id', 
            'entity' => 'categories',
            'attribute' => 'categorizable_id',
            'model' => 'App\Models\Category',
            'pivot' => 'true',
            'type' => 'select2_multiple'
        ]);

This returns an empty set... any help would be appreciated

[ItIsInspiring]

Hello people,
i have a similar issue but with 1:1 polymophic relationship

I would like to control the meta_description for each models (movement, group, artist, album, track)
So i created a polymophic relationship one to one to do that.

But inside the CRUD controller of backpack, when i define a textarea to create or edit my meta_description, the 'attribute' is not working properly. Here is my code

META.php

<?php

namespace App\Models;

use Backpack\CRUD\app\Models\Traits\CrudTrait;
use Illuminate\Database\Eloquent\Model;

class Meta extends Model
{
    protected $table = 'metas';
    // protected $primaryKey = 'id';
    // public $timestamps = false;
    protected $guarded = ['id'];
    protected $fillable = ['description', 'metable_id', 'metable_type'];
    // protected $hidden = [];
    // protected $dates = [];

    public function metable()
    {
       return $this->morphTo(); 
    }

}

MOVEMENT.php

<?php

namespace App\Models;

use Backpack\CRUD\app\Models\Traits\CrudTrait;
use Illuminate\Database\Eloquent\Model;

class Meta extends Model
{
    protected $table = 'metas';
    // protected $primaryKey = 'id';
    // public $timestamps = false;
    protected $guarded = ['id'];
    protected $fillable = ['description', 'metable_id', 'metable_type'];
    // protected $hidden = [];
    // protected $dates = [];

    public function metable()
    {
       return $this->morphTo(); 
    }

}

MovementCrudController.php

            // GESTION DE LA META_DESCRIPTION POUR LE MOVEMENT
            $this->crud->addField([
                'name' => 'meta', // the relationship name in your Model
                'type' => 'text',
                'label' => 'meta description',
                'entity' => 'meta', // the relationship name in your Model
                // NOT WORKING T_T
                'attribute' => 'description', // attribute on Meta that is shown to admin
                'tab'             => 'Ses relations',
            ]);

Do you know if backpack is able to manage one to one polymorphic relation ? i don't see any information about these specific case in the official documentation.
Thanks in advance

[tabacitu]

@marleybobby , I know @pxpm is just now working on adding examples for ALL relationship types inside the demo, including polymorphic relationships. @pxpm could you please post your experience here too?

[lambasoft]

@pxpm I would love an example on a Polymorph type, any idea when we can check it?