multilevel menu in laravel with recursive function

Question

my project is in Laravel 5.5 i have the table wposts for a multilevel menu in laravel and posts in the same time. The fields of the table are:

- id
- parentpost (id of parent post)
- title
- porder (order of posts in the same menu)

In the Controller i have the function getwposts to get the posts using recursion to have a multilevel menu.

private function getwposts($parentid = 0,$wposts = []){

    foreach(Wpost::where('parentpost', $parentid)->orderby('porder')->get() as $pwpost)
    {
        echo $pwpost->id.'-' ;
        $wposts[$pwpost->id] = $this->getwposts($pwpost->id,$wposts);
    }
return $wposts;    
}

In the same Controller after that, i have a function called preview that renders the view

public function preview($templ){

   $pwposts = \App\Wpost::with('parent')->get();

    $pwposts= $this->getwposts(0,[]);
    dd($pwposts);
    return view('templates.$templ1,compact('pwposts'));
}

I am almost there. The wright order of the tabble is

but the results are

Although with echo i see the correct order of the records in the tree view there isn't ok. My model is

 namespace App;

 use Illuminate\Database\Eloquent\Model;

 class Wpost extends Model
 {
    protected $fillable = 
   ['parentpost','title','body','author','storeid','porder','haskids'];
   protected $table = 'wposts';

   public function children(){
       return $this->hasmany(Wpost::class, 'parentpost');
   }   

   public function parent(){
       return $this->belongsTo(Wpost::class, 'parentpost');
   }
 }

I am stacked. Can you help me? thanks in advance

Answer 1

You can try https://github.com/etrepat/baum

I used, i feel so good

Answer 2

In your Model add $with = ['children']

 namespace App;

 use Illuminate\Database\Eloquent\Model;

 class Wpost extends Model
 {
    protected $fillable = 
   ['parentpost','title','body','author','storeid','porder','haskids'];
   protected $table = 'wposts';
   protected $with = ['children'];



   public function children(){
       return $this->hasmany(Wpost::class, 'parentpost');
   }   

   public function parent(){
       return $this->belongsTo(Wpost::class, 'parentpost');
   }
 }

Now if you want to get the childs in a recursive way you can use.

   $pwposts = \App\Wpost::with('children')->get();

Hope this helps

Answer 3

Try this:

| id | parend_id | name     | url                 |

| 1  |     0     | Level 1  | /level_one          |

| 2  |     1     | Sublevel | /level_one/sublevel |

| 3  |     0     | Level 2  | /level_two          | 

Model

public function children() {
    return $this->hasMany('App\Menus', 'parent_id', 'id');
}

public static function tree() {
    return static::with(implode('.', array_fill(0, 100, 'children')))->where('parent_id', '=', '0')->get();
}

Controller

$components = new Component;
try {
     $menu = $components->tree();
} catch (Exception $e) {}
return response()->json($menu);