Laravel 5.5 Eloquent - 文章::找到返回null

Question

I have two files,

CommentTransformer

And

ImageTransformer

In the first file, CommentTransformer, I can retrieve which Article it belongs to by doing this:

$article = Article::find($comment->article_id);

I'm doing the same exact thing in my ImageTransformer, but it returns null. Even if instead of using Article::find($image->article_id) I use Article::find(1) I still get a null result!

Here's the full code:

namespace App\Transformers;

use App\Article;
use App\User;
use App\Image;
use League\Fractal\TransformerAbstract;

class ImageTransformer extends TransformerAbstract
{
/**
 * A Fractal transformer.
 *
 * @return array
 */
public function transform(Image $image)
{
    $user = User::findOrFail($image->user_id);
    $article = Article::find($image->article_id);
   // $userArticle = User::find($article->user_id);
    return [
        'id'                 => (int) $image->id,
        'original_filename'  => $image->original_filename,
        'filename'           => $image->filename,
        'size'               => (int) $image->size,
        'path'               => url('/') . "/" . $image->path . '/' . $image->filename,
        'posted_by_username' => $user->name,
        'article'            => $article //if I call $article->id it returns "Trying to get property of non-object" as it is, it returns null
    ];
}
}

This is the response:

{
"data": [
    {
        "id": 1,
        "original_filename": "ptd.jpg",
        "filename": "f11bbe288649e76ec3b694890160abf930601aed.jpeg",
        "size": 103297,
        "path": "http:\/\/192.168.1.85:1299\/uploads\/f11bbe288649e76ec3b694890160abf930601aed.jpeg",
        "posted_by_username": "josh beck",
        "article": null
    }
   ]
 }

Answer 1

I assume that this one returns null because findOrFail() would throw an exception:

$article = Article::find($image->article_id);

If this returns null, it means there is no Article with the specified ID. You can check ID with dd($image-article_id);

Also, you can just load the data by using load() method:

$image->load(['user', 'article']);