如何在Laravel Controller中使用方法重载？

Question

I am trying to use method overloading feature in my laravel controller class. here is my methods

  # Load Customer Balance View
  public function createBalance()
  {
    return view('customer.balance');
  }

  # Load Customer Balance View
  public function createBalance($CustomerID)
  {
    // show balance of the the defined customer
  }

Here is my route -

    // customer balance
    Route::get('Customer/Balance', 'CustomerController@createBalance');

    Route::get('Customer/Balance/{ID}', 'CustomerController@createBalance');

But it shows the error -

FatalErrorException in CustomerController.php line 45:
Cannot redeclare App\Http\Controllers\CustomerController::createBalance()

Any solution please ?

Answer 1

Consider use default parameters:

  public function createBalance($CustomerID=null)
  {
    if ($CustomerID==null)
      return view('customer.balance');
    else
      // show balance of the the defined customer
  }

And change your route to:

Route::get('Customer/Balance/{CustomerID?}', 'CustomerController@createBalance');

Adding a "?" after the argument, Laravel understands you're passing an optional parameter.