Method [show] does not exist in laravel 4.2

I want to pass multiple parameter from href and want to get with Input::get() in my function. I get this error :

bad method call exception Method [show] does not exist error.

My route is: Route::get('workorder/test', 'WorkOrderController@test'); and passing on this way

<a class="btn btn-primary btn-xs" title="Edit" href="">
                                                <i class="fa fa-edit text-white"></i>
                                            </a>

I want to get from my function:

public function test() {
    echo Input::get('work_order_id');exit;
}

These are my routes for the given controller:

Route::resource('workorder', 'WorkOrderController'); 
Route::get('workorder/filter', 'WorkOrderController@filter'); 
Route::post('workorder/proceedworkorder', 'WorkOrderController@proceedworkorder'); 
Route::get('workorder/addworkorder', 'WorkOrderController@addworkorder'); 
Route::get('workorder/approve/{id?}', 'WorkOrderController@approve'); 
Route::get('workorder/decline/{id?}', 'WorkOrderController@decline'); 
Route::get('workorder/test', 'WorkOrderController@test');

I am not sure why I am getting this error.

via Alamin Dawan