public function all()
 {
     $customer_ids = [];
     if (\KodeInfo\Utilities\Utils::isDepartmentAdmin(Auth::user()->id)) {
         $department_admin = DepartmentAdmins::where('user_id', Auth::user()->id)->first();
         $department = Department::where('id', $department_admin->department_id)->first();
         $customer_ids = CompanyCustomers::where("company_id", $department->company_id)->lists('customer_id');
     } elseif (\KodeInfo\Utilities\Utils::isOperator(Auth::user()->id)) {
         $department_admin = OperatorsDepartment::where('user_id', Auth::user()->id)->first();
         $department = Department::where('id', $department_admin->department_id)->first();
         $customer_ids = CompanyCustomers::where("company_id", $department->company_id)->lists('customer_id');
     } else {
         $customer_ids = CompanyCustomers::lists('customer_id');
     }
     if (sizeof($customer_ids) > 0) {
         $this->data["customers"] = User::whereIn("id", $customer_ids)->orderBy('id', 'desc')->get();
     } else {
         $this->data["customers"] = [];
     }
     foreach ($this->data["customers"] as $customer) {
         $company_id = CompanyCustomers::where("customer_id", $customer->id)->pluck('company_id');
         $customer->company = Company::find($company_id);
         $customer->all_ticket_count = Tickets::where('customer_id', $customer->id)->count();
         $customer->pending_ticket_count = Tickets::where('customer_id', $customer->id)->where('status', Tickets::TICKET_PENDING)->count();
         $customer->resolved_ticket_count = Tickets::where('customer_id', $customer->id)->where('status', Tickets::TICKET_RESOLVED)->count();
     }
     return View::make('customers.all', $this->data);
 }