Try this https://github.com/etrepat/baum Create category model then define hasOne('Category') relation in product model.

Thanks You :)

I installed the following packages. https://github.com/etrepat/baum

How do I get the following output ?

  <ul class="task-list">
  <li>Electronics

    <ul class="task-list">
        <li>TV & Home Theater</li>
        <li>Tablets & E-Readers</li>
        <li>Computers

            <ul class="task-list">
                <li>Laptops

                    <ul class="task-list">
                        <li>PC Laptops</li>
                        <li>Macbooks (Air/Pro)</li>
                    </ul>
                </li>
                <li>Desktops</li>
                <li>Monitors</li>
            </ul>
        </li>
        <li>Cell Phones</li>
    </ul>
</li>
<li>Health Fitness & Beaty</li>
<li>Small Appliances</li>
<li>Major Appliances</li>
</ul>

To view all the products in a category and sub-categories of products, what should I do ?

It's good that you're using Baum but this is more useful for getting your database and tree organised than the View.

Now basically you want to create a View and use with('categories', $categories) to pass in your top level categories. Then a simple solution is to use Blade to have:

@foreach ($categories as $category)

     @if ($category->hasSubCategories())
               <!--Subcat HTML using {{$category->subCats()}}-->
     @elseif($category->hasProducts())
                  <!-- Either product HTML or just show the category as the bottom of the tree, depending on your design-->
     @endif
@endforeach

HTH

thanks You .

   Output Error : 
        Call to undefined method Baum\Extensions\Query\Builder::hasSubCategories() (View: C:\xampp\htdocs\shopping\app\views\test.blade.php)


    Route::get('prod', function(){
   $productgroups = Productgroup::all();
   return View::make('test')->with('productgroups' , $productgroups);
    });


// Blade File
    @foreach ($productgroups as $category)

      @if ($category->hasSubCategories())
           <!--Subcat HTML using {{$category->subCats()}}-->
      @elseif($category->hasProducts())
              <!-- Either product HTML or just show the category as the bottom of the tree, depending on your design-->
       @endif
  @endforeach