如何在laravel View中调用方法？

Question

I have controller which will load the view part

public function homePage(){
    $categories = Category::all();
    $products = Product::all();
    return view('cart.index',compact('categories','products'));
}

Here is the View (basically checking for subcategory if there it will show otherwise skip)

<ul class="list-group list-group-bordered list-group-noicon uppercase">
    <li class="list-group-item active">
        @foreach($categories as $row)
            <a class="dropdown-toggle" href="#">{{$row->name}}</a>
            @if({{StapsController::checkSubcategory($row->id)}})
                @foreach($subcategories as $sub)
                    <ul>                                        
                        <li><a href="#"><span class="size-11 text-muted pull-right">(123)</span> {{$sub->s_name}}</a></li>          
                    </ul>
                @endforeach 
            @else
                <li class="list-group-item"><a href="#"><span class="size-11 text-muted pull-right">(189)</span> {{$row->name}}</a></li>
            @endif
        @endforeach

    </li>
</ul>   

Here is the checkSubcategory method

public function checkSubcategory($id){
    $category = Category::find($id);
    $id = $category->id;
    $subcategories = DB::table ('subcategories')
        ->join('categories_subcategories','subcategories.id','=','categories_subcategories.subcategory_id')
        ->join('categories','categories_subcategories.category_id','=','categories.id')
        ->where('categories.id','=',$id)
        ->select('subcategories.name as s_name ')
        ->get(); 

    return $subcategories;
}

But i got syntax Error in line of calling method in View? what could be the error ..is there any mistake calling method in view part?

Answer 1

If the logic of checkSubcategory works fine in the controller itself, you have to transport it to the model. i.e make it model's method so from the view you could able to do something like the following:

....
<a class="dropdown-toggle" href="#">{{$row->name}}</a>
                                        @if({{$row->checkSubcategory($row->id);}})
                                        <ul>
....

In other words, define this method in your Category model.