perbaikan 4

<?php
/*
---------
CONTROLLER
-----
*/

public function input_data_pengguna() {
            $kata_sandi = $this->input->post("kata_sandi", TRUE);
            $kata_sandihash = password_hash($kata_sandi, PASSWORD_DEFAULT);
    /*
    seharusnya disini ada validasi semua input OK/tidak  bila tidak OK maka
----
$this->session->set_flashdata("danger_AddData", "<div class='alert alert-danger' role='alert'><span class='glyphicon glyphicon-remove'></span><button type='button' class='close' data-dismiss='alert' aria-hidden='true'>&times;</button> <b>System ERROR!</b></div>");
redirect(site_url("f-c_pengguna/pengguna"));

---
    */
            $data = [
                "kata_sandi" => $kata_sandihash,
                "nip" => $this->input->post("nip", TRUE),
                "nis" => $this->input->post("nis", TRUE),
                "alamat" => $this->input->post("alamat", TRUE),
                "id_posisi" => $this->input->post("id_posisi", TRUE),
                "nama_lengkap" => $this->input->post("nama_lengkap", TRUE),
                "jenis_kelamin" => $this->input->post("jenis_kelamin", TRUE),
                "nama_pengguna" => $this->input->post("nama_pengguna", TRUE)
            ];

            $sql = $this->d_pengguna->add_data($data,$error);
/*
            if ($sql === FALSE) {
                $this->session->set_flashdata("danger_AddData", "<div class='alert alert-danger' role='alert'><span class='glyphicon glyphicon-remove'></span><button type='button' class='close' data-dismiss='alert' aria-hidden='true'>&times;</button> <b>System ERROR!</b></div>");
                redirect(site_url("f-c_pengguna/pengguna"));
            }
            else
*/
            if ( $sql  ) { //== TRUE
                $this->session->set_flashdata("success_AddData", "<div class='alert alert-success' role='alert'><span class='glyphicon glyphicon-ok'></span><button type='button' class='close' data-dismiss='alert' aria-hidden='true'>&times;</button> <b>Penyimpanan data pengguna berhasil dilakukan.</b> Terima kasih :)</div>");
                redirect(site_url("f-c_pengguna/pengguna"));
            } else {
                $this->session->set_flashdata("warning_AddData", "<div class='alert alert-warning' role='alert'><span class='glyphicon glyphicon-alert'></span><button type='button' class='close' data-dismiss='alert' aria-hidden='true'>&times;</button> Peringatan: <b>".$error."</b> Silahkan mencoba kembali! :)</div>");
                redirect(site_url("f-c_pengguna/pengguna"));
            }
        }
/*
--------------------
MODEL
*/
public function add_data($data = false, &$error='') {
            if ($data == false) {
                return FALSE;
            } else {
                foreach ($data as $name => $value) {
                    if(!$this->db-> field_exists($name, 'tbl_pengguna')){
                        //$this->db->reset_query();
                        log_message('error', 'field '.$name.' TIDAK DITEMUKAN');
                        $error= 'field '.$name.' TIDAK DITEMUKAN';
                        return FALSE;
                    }
                    //$this->db->set($name, $value);
                }
            }

            $query=$this->db->set("id_pengguna", "UUID()", FALSE)->insert("tbl_pengguna", $data);
            if($query){
                return TRUE;
            }
            else{
                log_message('error','sql'.$this->db->last_query());
                $error= 'Query bermasalah';
                return FALSE;
            }
        }