Laravel Route Controller with Forced Parameter

Question

So i have checked out PHP - Routing with Parameters in Laravel and Laravel 4 mandatory parameters error

However using what is said - I cannot seem to make a simple routing possible unless im not understanding how filter/get/parameters works.

So what I would like to do is have a route a URL of /display/2 where display is an action and the 2 is an id but I would like to restrict it to numbers only.

I thought

Route::get('displayproduct/(:num)','SiteController@display');
Route::get('/', 'SiteController@index');

class SiteController extends BaseController {

public function index()
{

    return "i'm with index";
}

public function display($id)
{
    return $id;
}
}

The problem is that it throws a 404 if i use

Route::get('displayproduct/{id}','SiteController@display');

it will pass the parameter however the URL can be display/ABC and it will pass the parameter. I would like to restrict it to numbers only.

I also don't want it to be restful because index I would ideally would like to mix this controller with different actions.

Rufinus · Accepted Answer · 2013-10-08 15:24:41Z

8

Assuming you're using Laravel 4 you can't use (:num), you need to use a regular expression to filter.

Route::get('displayproduct/{id}','SiteController@display')->where('id', '[0-9]+');

edited Oct 8, 2013 at 15:24

Rufinus

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answered Jul 16, 2013 at 3:00

dragoon

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4 Comments

dragoon Over a year ago

Correct, all constraints are done using regular expressions, using {id} will allow anything to match. Take a look at laravel.com/docs/routing#route-parameters

dragoon Over a year ago

Code Happy is for Laravel 3, check out Code Bright (for Laravel 4) codebright.daylerees.com

azngunit81 Over a year ago

Wow...if only i ran into this - that site needs to be up in the top 10 search results to avoid headaches. -tks for the link

user6067756 Over a year ago

@dragoon What If I want to provide choices for id, like only value 1,3 & 5 can be passed? How can I do that?

Lucky Soni · Accepted Answer · 2014-04-13 18:51:02Z

3

You may also define global route patterns

Route::pattern('id', '\d+');

How/When this is helpful?

Suppose you have multiple Routes that require a parameter (lets say id):

Route::get('displayproduct/{id}','SiteController@display');
Route::get('editproduct/{id}','SiteController@edit');

And you know that in all cases an id has to be a digit(s).

Then simply setting a constrain on ALL id parameter across all routes is possible using Route patterns

Route::pattern('id', '\d+');

Doing the above will make sure that all Routes that accept id as a parameter will apply the constrain that id needs to be a digit(s).

edited Apr 13, 2014 at 18:51

answered Apr 13, 2014 at 13:31

Lucky Soni

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3 Comments

azngunit81 Over a year ago

Sorry - I don't understand that one - and I haven't seen anyone use that one yet

azngunit81 Over a year ago

Sorry for being late on looking into your answer - it is effective if the pattern is an actual pattern. The Where is prefered if its digits because you can restrict it to be digits. Its about the equivalent of doing a preg_reg match comparing to is_numeric - is_numeric yields faster results

Lucky Soni Over a year ago

@azngunit81 I think this is a better option if you want to re-use a pattern - for the same reason for which we use functions. Also it does not matter what pattern you want to match against, this is also using regex.

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