我可以在laravel路由中省略可选参数吗？

Question

here's code:

Route::get('diagram', 'DiagramController@showDiagram');
Route::get('diagram/{type}', 'DiagramController@showDiagram');
Route::get('diagram/{type}/{template}', 'DiagramController@showDiagram');
Route::get('diagram/{type}/{template}/{offset}', 'DiagramController@showDiagram');

and here's how I want it to look like:

Route::get('diagram/{type}/{template}/{offset}', 'DiagramController@showDiagram');

Is there a way to tell Laravel that all of the above parameters don't have to be given in url? Or do I have to declare it like above in four lines?

Answer 1

You don't have to write four line for that, check the Routing documentation on Laravel.

So in your case, you could write

Route::get('diagram/{type?}/{template?}/{offset?}', 'DiagramController@showDiagram');

You just add a ? at the end of each optional parameters.