public function products_management()
{

$this->config->load('grocery_crud');
$this->config->set_item('grocery_crud_dialog_forms',true);
$this->config->set_item('grocery_crud_dialog_color','pink darken-4');
$this->config->set_item('grocery_crud_dialog_text_color','white');


$crud = new grocery_CRUD();
$crud->set_theme('materializecss'); // magic code
$crud->set_table('products');
$crud->set_subject('Product');
$crud->unset_columns('productDescription');
$crud->callback_column('buyPrice',array($this,'valueToEuro'));

$output = $crud->render();

$this->_example_output($output);
}