Bdtjtk

I'm trying to calculate users age, and then group those results like the following:

public function setAge($users)

{

    if($users)

        foreach($users as $user)

        {

            $now    = Carbon::now();

            $u->age = Carbon::createFromFormat('Y-m-d', $u->birth_date);

            $u->age = $now->diffInYears($u->age)

        }



    return $users;

}



public function groupByAge($users)

{

    $ageGroups = ['less than 20', 'more than 20'];

    foreach ($users as $u) 

       switch($u->age) {

           case ($u->age < 20)

               $ageGroups['less than 20'] += 1;

               break;

           case($u->age > 20)

               $ageGroups['more than 20'] += 1;

               break;

       }



    return $age;

}           



public function index()

{

    $users = DB::table('users')->get;

    $users = $this->setAge($users);

    $users = $this->groupByAge($users);



    dd($groupByAge);



    return view('/users/',['users'=> $users]);

}

However when I dd($groupByAge) I'm always receiving

empty array like ('key' => 0)

I'm not sure if I'm not passing $users correctly or what is the issued.

/**

 * @return array()

 */

public function setAge($users) {

  if($users) {

    foreach($users as &$user) {

      $now = Carbon::now();

      $user->age = Carbon::createFromFormat('Y-m-d', $user->birth_date);

      $user->age = $now->diffInYears($user->age);

    }

  }

 return $users;

}



/**

 * @return array()

 */

public function groupByAge($users) {

   $ageGroups = ['less than 20', 'more than 20'];

   $ageGroup = ;

    foreach ($users as $u) { 

        switch($u->age) {

          case ($u->age < 20) :

             $ageGroup['less_then_20'] = 1;

          break;

         case($u->age >= 20) :

             $ageGroup['more_than_20'] = 1;

         break;

         default:

             $ageGroup['error'] = 'error';

         break;

     }

   }

   return $ageGroup;

 }           



  public function index() {

    $users = DB::table('users')->get;

    $users = $this->setAge($users);

    $users = $this->groupByAge($users);



    print_r("<pre>");

    print_r($users);

    print_r("</pre>");die();



    return view('/users/',['users'=> $users]);

 }

Carbon provides a method to calculate the age directly. So, assuming that $birth_date already is cast to Carbon instance, it is possible to call age on that.

I am not sure if you want just count the users in the certain age groups or if you want to group them. As the title indicates to group the users into age groups, you can do the following:

public function index() {

    $groupedUsers = User::all()->mapToGroups(function($user, $key) {

        if ($user->birth_date->age < 20) {

            $ageGroups['less than 20'] = $user

        } else {

            $ageGroups['more than 20'] = $user

        }



        return $ageGroups;

    });





    return view('/users/',[

    'users'=> $groupedUsers

    ]);

 }

You should try this:

public function index() {

    $users = DB::table('users')->get;

    $users = $this->setAge($users);

    $users = $this->groupByAge($users);

    dd($users); exit();

    return view('/users/',[

      'users'=> $users]);



}