# RouteGroup.php \_\_invoke()

**URL:** <https://discourse.slimframework.com/t/routegroup-php---invoke/675>\
**Category:** Questions\
**Created:** [August 31, 2016, 11:40am UTC](https://discourse.slimframework.com/t/routegroup-php---invoke/675 "2016-08-31T11:40:54Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![epicsign](https://avatars.discourse-cdn.com/v4/letter/e/bbce88/32.png) [@epicsign](https://discourse.slimframework.com/u/epicsign)\
**Post date:** [August 31, 2016, 11:40am UTC](https://discourse.slimframework.com/t/routegroup-php---invoke/675/1 "2016-08-31T11:40:54Z")

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public function \_\_invoke(App $app = null)  
{  
.  
.  
.  
$callable();  
}

please modify `$callable()` to `$callable($app)`

---

<div class="post-metadata">

**Author:** ![nanaksr](https://avatars.discourse-cdn.com/v4/letter/n/94ad74/32.png) [@nanaksr](https://discourse.slimframework.com/u/nanaksr)\
**Post date:** [September 29, 2016, 6:46pm UTC](https://discourse.slimframework.com/t/routegroup-php---invoke/675/2 "2016-09-29T18:46:35Z")

</div>

use Container Resolution

[http://www.slimframework.com/docs/objects/router.html#container-resolution](http://www.slimframework.com/docs/objects/router.html#container-resolution)