我有category
表,它有一parent_id
列有两个值:children
和parent
何时parent_id
为 NULL 它是父级(类别),否则它是一个子级(子类别)。
更多详细信息:我有一个navigation blade
并且我在其中显示类别并在下拉列表中显示子类别。我在我的刀片中扩展了它。所以当你$nav_category
在控制器中看到变量时,它用于在导航中显示类别
subcategories
当我单击一个类别并打开它的页面时,我希望能够看到它,但它向我显示了所有subcategories
.
这是我的类别模型:
class Category extends Model
{
use HasFactory;
protected $fillable = [
'parent_id','title' , 'description', 'status',
];
public function parent()
{
return $this->belongsTo(Category::class);
}
public function children(){
return $this->hasMany(Category::class , 'parent_id');
}
}
我的 ShowCategoryController :
public function index($id)
{
//all parent categories
$parent_categories = Category::with('children')->whereNull('parent_id')->get();
//show categories in navigation
$nav_categories = $parent_categories->take(7);
//show categories details (subcategories , posts and tags)
$show_categories = $parent_categories->find($id)->get();
return view('home.showcategory' , compact('show_categories' , 'nav_categories'));
}
展示类别刀片:
@extends('home.mainlayout')
@section('content')
@foreach($show_categories as $show_category)
@foreach($show_category->children as $child)
<div>
<h2 style="text-align: center">{{ $child->title }}</h2>
</div>
@endforeach
@endforeach
@endsection
导航刀片:
@foreach($nav_categories as $nav_category)
<li class="dropdown"><a class="dropdown-toggle" data-toggle="dropdown" href="#"> {{ $nav_category->title }} <span class="caret"></span></a>
<ul class="dropdown-menu" >
@foreach($nav_category->children as $child)
<li><a href="#">{{ $child->title }}</a></li>
@endforeach
<li><a href="{{ route('show_category' , $nav_category->id) }}">more</a></li>
</ul>
</li>
@endforeach
和家庭控制器:
public function index()
{
//for show categories in nvaigation
$nav_categories = Category::with(['children' => function($q) { $q->take(7); }])
->whereNull('parent_id')->get();
return view('home.home' , compact('nav_categories' ));
}
谢谢您的帮助 :)