SQLSTATE[42S22]: Column not found: 1054 Unknown column 'categories.sub_category_id' in 'where clause' -- Laravel 5

I have two tables categories and subcategories.I want to show category in subcategory table.For this i have done follwing code.It shows error when i try to fetch category name from category table using one to many relationships. Databases are categories:- id,name and subcategories:- id,category_id,subname Category.php model

    class Category extends Model
    {
        protected $primaryKey = 'id';
        protected $table = "categories";

        public function subcategories()
         {
             return $this->hasMany('App\SubCategory');
         } 
    }

    Subcategory.php model
    class SubCategory extends Model
    {
        protected $primaryKey = 'id';
       protected $table = "subcategories";

         public function category()
         {
             return $this->hasMany('App\Category');
         } 
    }

    Category Controller

    public function show(){
       $categories=  Category::all();
       //dd($categories);
        $subcategories=Subcategory::all();
        //dd($subcategories);
        return view('show',compact('categories','subcategories'));
       }
    show.blade.php

    @foreach($subcategories as  $subcategory)
    
    
  
    @endforeach



  This line is giving me error .Please sort this issues.

via Chebli Mohamed