How to set regular expression parameter constraints for Route::group in Laravel 4? - regex

Question

For simple routes I know I can user where statement. But what about parameters in Route::group() prefix
<?php
Route::get('user/{id}', 'UserController#profile')->where('id', '[0-9]+');
Route::group(['prefix' => 'foo/{bar}'], function() {
// ...
})->where('bar', '[0-9a-Z]+'); // this won't work

Answer 1

I'm using laravel 5.5. I had same problem and find this question in search.
I've tried to use the solution defined by #lukasgeiter and faced a problem:
The value of
$group->getRoutes()
was not only the routes of current group.
But I fixed my problem by specifying condition in route group definition.
Route::group([
'prefix' => 'foo/{bar}',
'where' => ['bar' => '[0-9a-Z]+']
],
function() {
// ...
});
And it worked for me :)

Answer 2

Out of the box the laravel router doesn't support this. You can use the Enhanced Router package from Jason Lewis or a fork that enables support for Laravel 4.2
Alternatively you can do it yourself. You could basically add the where condition to every route inside the group:
Route::group(['prefix' => 'foo/{bar}'], function() {
Route::get('/', function(){
// ...
})->where('bar', '[0-9a-Z]+');
});
Or do it a bit more dynamic and add this at the bottom of your route group:
Route::group(['prefix' => 'foo/{bar}'], function($group) {
// ...
foreach($group->getRoutes() as $route){
$route->where('bar', '[0-9a-Z]+');
}
});

Answer 3

One of possible not perfect solution in my view will be
// Route Model Binding
Route::model('user', 'User');
// Route Constraint Pattern
Route::pattern('user', '[0-9]+');
// Route Definition
Route::get('anything/{user}', 'UserController#anyFunction');
.
.
Route::resource('user', 'UsersController');