laravel router argument behaviour - php

Question

I notice that when you use URL:::action, and set some arguments, sometimes laravel would cast them as GET requests, sometimes not.
Is there anyone know why and how to controller it?
echo URL::action('Campaign\\CampaignController#getIndex',['para' => 1]),"<br>";
echo URL::action('Campaign\\CampaignController#getOtherAction',['para' => 1]),"<br>";
echo URL::action('Campaign\\CampaignController#getOtherAction2',['para' => 1]),"<br>";
Output:
/campaign?para=1
/campaign/other-action/1
/campaign/other-action2/1
Note the getIndex gets argument as GET (?para=1)

Answer 1

This happens because system cannot differentiate requests to getIndex from others if they pass it as url segment.
Means
/campaign/other-action/1 translates to other-action as a method with 1 as param
By your expectation
/campaign/other-action/1 translates to getIndex as a method with other-action/1 as param
Index methods are not suppose to have URL segments as inputs. If you need url segments as inputs then you will have to pass it as a get parameter and thats what laravel is doing for you.
According to your first route output,
if the url is /campaign/1 which means it will expect a method named get1. Another example: if the url is /campaign/param system would expect a method getParam
NOTE for fellow stackoverflow-ers:Consider asking questions before downvoting

Answer 2

I actually found the reason.
when you are using route::controllers method, laravel would assume you have multiple parameters attached to each action
Route::controllers([
'order' => 'Order\OrderController',
'campaign' => 'Campaign\CampaignController'
]);
For example:
campaign/other-action/{VALUE1?}/{VALUE2?}/{VALUE3?}...
So when you pass ['para' => 1, 'para2' => 'abc'], laravel will try to match parameters to action. in this case: campaign/other-action/1/abc
Avoiding to use Route::controllers, an help you take control on laravel router argument behaviour.
For example, in routes.php:
Route::get('campaign/other-action/{id}','Campaign\CampaignController#getOtherAction2')
when you give
echo URL::action('Campaign\\CampaignController#getOtherAction2',['id'=>366, 'para' => 1, 'para2' => 'abc']);
you will get what you want:
campaign/other-action/366?para=1&para2=abc
I hope it is helpful and I now understand why laravel remove Route::controllers from 5.3 version.