how to display video per category in laravel eloquent - php

Question

model video
protected $table = 'lokit_video';
protected $fillable =
[
'title',
'cover_img',
'trailer',
'url',
'order_',
'active',
'description',
'lokit_category_id',
'duration'
];
public function lokit_category(): BelongsTo
{
return $this->belongsTo(Category::class);
}
model category
protected $table = 'lokit_category';
protected $fillable = ['name'];
in controller
public function index(){
$dataCategory = Category::all();
$dataVideo = Video::all();
$video = Video::where('lokit_category_id', $dataCategory)->get();
dd($video);
return View('bnpt.content.home',compact('dataCategory','dataVideo'));
}
when I try the code above what happens with the code is null, how to fix it?

Answer 1

If you want to get all the videos related to all the categories, you should develop the relationship.
In Category Model:
public function videos()
{
return $this->hasMany(Video::class);
}
In the controller method:
$dataCategory = Category::all();
return View('bnpt.content.home',compact('dataCategory'));
In the view file:
<ul>
#foreach($dataCategory as $category)
<li><span>{{$category->name}}</span>
<ul>
#foreach($category->videos as $video)
<li><span>{{$video->name}}</span></li>
#endforeach
</ul>
</li>
#endforeach
</ul>

Answer 2

[PROBLEM]In your code you have
$dataCategory = Category::all();
$video = Video::where('lokit_category_id', $dataCategory)->get();
$dataCategory is a collection of the model instances of all the entries in your lokit_category table.
[SOLUTION]
You can't compare a collection with a field that expects an id in your case in the where statement.
lokit_category_id should be compared with the id of a category.
If you have the lokit_category_id
$videos = Video::where('lokit_category_id', $lokit_category_id)->get();
dd($videos);
If you have the name of the lokit_category, get the id using that name and then make the query.
// Get the category for which you want to get all the videos.
$categoryName = 'CATGEORY NAME';
$category = Category::where('name', $categoryName)->first();
$videos = Video::where('lokit_category_id', $category->id)->get();
dd($videos);
[IF YOU WANT VIDEOS WITH RESPECT TO A CATEGORY]
In your Category Model
public function videos(){
return $this->hasMany(App\Video::class, 'lokit_catgeory_id', 'id');
}
Controller
Use eager loading as it will help in reducing the number of queries.
$categories = Category::with('videos')->get();
foreach($categories as $category){
// You can access the videos for the category using the videos relation.
$category->videos;
}