function addresses_management()
{
$this->load->library('grocery_CRUD');
$this->load->library('ajax_grocery_CRUD');
//create ajax_grocery_CRUD instead of grocery_CRUD. This extends the functionality with the set_relation_dependency method keeping all original functionality as well
$crud = new ajax_grocery_CRUD();
//this is the default grocery CRUD model declaration
$crud->set_table('address');
$crud->set_relation('ad_country_id', 'country', 'c_name');
$crud->set_relation('ad_state_id', 'state', 's_name');
//this is the specific line that specifies the relation.
// 'ad_state_id' is the field (drop down) that depends on the field 'ad_country_id' (also drop down).
// 's_country_id' is the foreign key field on the state table that specifies state's country
$crud->set_relation_dependency('ad_state_id', 'ad_country_id', 's_country_id');
$crud->unset_print();
$crud->unset_export();
//$crud->unset_add();
// $crud->unset_edit();
$crud->unset_delete();
$output = $crud->render();
$this->_example_output($output);
}