ChartJS and Laravel5 - laravel

Question

I have the following code in PHP controller:
public function getMainAdminBackend(){
$user_info = \DB::table('users')
->select('role_id', \DB::raw('count(*) as total'))
->groupBy('role_id')
->get();
return view('admin.main')->with('userInfo',$user_info);
}
In the view I have this chart.js:
<?php
$data = array(
'Jan' => array(33),
'Feb' => array(32),
'Mar' => array(12)
);
?>
{!! app()->chartbar->render("BarChart", $data) !!}
How can I convert the array of controller with the format required to JS Chart ?
EDIT
Now I receive the following format , the graphic show the number 1,2,3 but cant't print the lines of the graphics.
array(3) { [1]=> int(35) [2]=> int(20) [3]=> int(35) }

Answer 1

In your controller you call return view('admin.main')->with('userInfo',$user_info);
with('userInfo',$user_info) sets a $userInfo variable in your view with the content of $user_info, so just something like that should do the trick
{!! app()->chartbar->render("BarChart", $userInfo) !!}
EDIT: i assumed $user_info was already in the correct format but you couldn't figure out how to display it. Reading your comments i better understand your needs.
I don't know which data format chartJS and what you want to display. Looking $data example and your DB query, i assume you want to display data in the format "role_id" => count(*)
so, in that case, i would do something like
$userArray = array();
foreach($user_info as $row) {
$userArray[$row->role_id] = $row->total;
}
return view('admin.main')->with('userInfo',$userArray);

Answer 2

Looks like you need to put the data in the right format:
public function getMainAdminBackend() {
$user_info = \DB::table('users')
->select('role_id', \DB::raw('count(*) as total'))
->groupBy('role_id')
->get();
$data = [];
if ($user_info) {
foreach ($user_info as $month => $value) {
$data[date("M", mktime(0, 0, 0, $month, 1, 0))] = [$value];
}
}
return view('admin.main')->with('userInfo', $data);
}