It seems like your Category hasMany Product, which means it retuns a collection, not a single product. However in your view, you're trying to access a single product on your category. You need another @foreach loop for your products.

enkay said:

It seems like your Category hasMany Product, which means it retuns a collection, not a single product. However in your view, you're trying to access a single product on your category. You need another @foreach loop for your products.

Ok, I will try,

I want to access, Each categoty products.

What I need to change?

I changed my cotroller

<?php

class HomeController extends BaseController {

	public function index() {
	$categories = Categorie::with('product')->get();
	$products = Product::get();	
		return View::make('home', array(
			'categories' => $categories,
			'products' => $products
			));
	}

}

And added one more foreachloop

  <select data-placeholder="Select product" style="width:350px;" class="chosen-select" tabindex="5">
            <option value=""></option>
            @foreach ($categories as $categorie)
            	{{'<optgroup value="'.$categorie->id.'" label="'.$categorie->name.'">' }}
             @foreach ($products as $product)	
            	{{'<option>'.$product->name.'</option>'}}
			 @endforeach            	
              </optgroup>
            @endforeach
            </select>

Now do not have error!

Good thing is, I get all categories! :)

But each category, has ewery second level products.

How I get just correct products for correct categories? Thanks :)

Your controller was fine the way it was before. Edit your model and your view.

Categorie.php

<?php 
class Categorie extends Eloquent{

    protected $table = 'categories';

    public function products() {

        return $this->hasMany('Product', 'categorie_id');
    }

}

view.blade.php

<select data-placeholder="Select product" style="width:350px;" class="chosen-select" tabindex="5">
        <option value=""></option>
        @foreach ($categories as $categorie)
                {{'<optgroup value="'.$categorie->id.'" label="'.$categorie->name.'">' }}
                @foreach($categorie->products() as $product)
                {{'<option>'.$product->name.'</option>'}}
                @endforeach
        @endforeach
</select>

    @foreach($categories->products() as $product)
        {{ $product->name }}
    @endforeach

This code gives me error

Symfony \ Component \ Debug \ Exception \ FatalErrorException Call to undefined method Illuminate\Database\Eloquent\Collection::products()

When I change code to Remove () at the end of product, I get!

    @foreach($categories->products as $product)
        {{ $product->name }}
    @endforeach

This error!

ErrorException Undefined property: Illuminate\Database\Eloquent\Collection::$products (View:C:\xampp\htdocs\laravel\app\views\home.blade.php)

I know this is an old thread, but I thought I would reply to the last post.

@LOGINGRUPA you are getting the error because this line:

@foreach($categories->products() as $product)

should be this:

@foreach($categorie->products() as $product)