Kenapa variablenya ga ada isinya ?

ini untuk modelnya

public function get_data_persetujuan()
	{

				$this->db->select('tbl_persetujuan.kd_persetujuan, tbl_permohonan.no_permohonan, tbl_training.judul_training, tbl_training.penyelenggara, tbl_training.tempat, tbl_training.biaya, tbl_training.tujuan, tbl_karyawan.nm_karyawan, tbl_persetujuan.persetujuan, tbl_persetujuan.keterangan');
				$this->db->from('tbl_persetujuan');
				$this->db->join('tbl_permohonan','tbl_persetujuan.no_permohonan=tbl_permohonan.no_permohonan');
				$this->db->join('tbl_training','tbl_persetujuan.id_training=tbl_training.id_training');
				$this->db->join('tbl_karyawan','tbl_persetujuan.nrp=tbl_karyawan.nrp');
				$query = $this->db->get();

				return $query;
	}

ini controllernya

public function persetujuan()
	{
		$ceks = $this->session->userdata('kamar@2017');
		if(!isset($ceks)) {
			redirect('web/login');
		}else{
			$data['user']  			    = $this->Mcrud->get_data_by_pk('tbl_user', 'username', $ceks);
			$data['v_persetujuan']		= $this->Mcrud->get_data_persetujuan();

					$this->load->view('header', $data);
					$this->load->view('director/persetujuan', $data);
					$this->load->view('footer');

					if (isset($_POST['btnsimpan'])) {
							$no_permohonan					= htmlentities(strip_tags($_POST['no_permohonan']));
							$id_training					= htmlentities(strip_tags($_POST['id_training']));
							$nrp 					= htmlentities(strip_tags($_POST['nrp']));
							$persetujuan					= htmlentities(strip_tags($_POST['persetujuan']));
							$keterangan			= htmlentities(strip_tags($_POST['keterangan']));

									$data = array(
										'no_permohonan'					 => $no_permohonan,
										'id_training'					 => $id_training,
										'nrp'					 		 => $nrp,
										'persetujuan'					 => $persetujuan,
										'keterangan'				   => $keterangan
										);
									$this->Mcrud->save_data('tbl_persetujuan', $data);

									$this->session->set_flashdata('msg',
										 '
										 <div class="alert alert-success alert-dismissible" role="alert">
												<button type="button" class="close" data-dismiss="alert" aria-label="Close">
													<span aria-hidden="true">×  </span>
												</button>
												<strong>Sukses!</strong> persetujuan berhasil ditambahkan.
										 </div>'
									 );
							}else{
									$error = $this->upload->display_errors();
									$this->session->set_flashdata('msg',
										 '
										 <div class="alert alert-warning alert-dismissible" role="alert">
												<button type="button" class="close" data-dismiss="alert" aria-label="Close">
													<span aria-hidden="true">×  </span>
												</button>
												<strong>Gagal!</strong> '.$error.'.
										 </div>'
									 );
							}
							redirect('web/persetujuan');
					}
		}

ini viewnya

<?php
$ceks = $this->session->userdata('kamar@2017');
$ceks = $this->Mcrud->get_data_by_pk('tbl_user', 'username', $ceks)->row();

//var_dump($v_persetujuan->result_array());exit;
?>

<!-- Main content -->
<div class="content-wrapper">
  <br><br><br>
  <!-- Content area -->
  <div class="content">

    <!-- Dashboard content -->
    <div class="row">
      <!-- Basic datatable -->
      <div class="panel panel-flat">
        <div class="panel-heading">
          <h5 class="panel-title">
            <?php
            if ($ceks->level == "director") {?>
                Permohonan Training
            <?php
            } ?> (Persetujuan Director)</h5>
          <div class="heading-elements">
            <ul class="icons-list">
              <li><a data-action="collapse"></a></li>
            </ul>
          </div>
        </div>
        <hr>
        <div class="panel-body">
          <?php
          echo $this->session->flashdata('msg');
          ?>
          <?php
          if ($ceks->level == "director") {?>
            <form class="form-horizontal" action="" method="post">
            <div class="col-md-12">
              <div class="col-md-12">
                <div class="form-group">
                  <label class="control-label col-lg-2">No Permohonan</label>
                  <div class="col-lg-3">
                    <select class="form-control" name="no_permohonan" onchange="changeValue(this.value)" autofocus>
                      <option value="">Pilih No Permohonan</option>
                      <?php
                      $jsArray = "var dtKamar = new Array();\n";
                      foreach ($v_persetujuan->result() as $baris) {

                          echo '<option value="' . $baris->no_permohonan . '">' . "$baris->no_permohonan [$baris->no_permohonan]" . '</option>';
                          $jsArray .= "dtKamar['" . $baris->no_permohonan . "'] = {
                                        id_training:'" . addslashes($baris->id_training) . "'
                                      };\n";
                      } ?>
                    </select>


				                  <script type="text/javascript">
                    <?php echo $jsArray; ?>
                    function changeValue(id){
                      document.getElementById('id_training').value = dtKamar[id].id_training;
                    };
                    </script>
                  </div>
                </div>

				 <div class="form-group">
                  <label class="control-label col-lg-2">ID Training</label>
                  <div class="col-lg-10">
                    <input type="text" name="id_training" id="id_training" class="form-control" value="" required maxlength="35" placeholder="ID Training" readonly>
                  </div>
                </div>

<!-- ini space untuk nrp -->
				  <div class="form-group">
                  <label class="control-label col-lg-2">NRP</label>
                  <div class="col-lg-10">
                    <input type="text" name="nrp" id="nrp" class="form-control" value="" required maxlength="5" placeholder="NRP" >
                  </div>
                </div>


                <div class="form-group">
                  <label class="control-label col-lg-2">Persetujuan</label>
                  <div class="col-lg-10">
                    <input type="radio" name="gender" class="form-control" value="Setuju" required> Setuju<br>
					<input type="radio" name="gender" class="form-control" value="Tidak" required> Tidak Setuju<br>
                  </div>
                </div>

                <div class="form-group">
                  <label class="control-label col-lg-2">Keterangan</label>
                  <div class="col-lg-10">
					 <textarea name="keterangan" rows="8" cols="80" class="form-control" placeholder="Keterangan" required></textarea>
                  </div>
                </div>
              </div>
            </div>

            <br>
            <hr>
            <button type="submit" name="btnsimpan" class="btn btn-primary" style="float:right;">Simpan</button>

          </form>
        </div>
        <br>

        <hr>
        <?php
        } ?>

        <div class="table-responsive">
        <table class="table datatable-basic" width="100%">
          <thead>
            <th width="10">No</th>
            <th>No Permohonan</th>

            <th>Id Training</th>
            <th>Judul Training</th>
            <th>Penyelenggara</th>
            <th>Tempat</th>
            <th>Waktu</th>
            <th>Biaya</th>
            <th>Tujuan</th>
            <th>Tanggal Permohonan</th>

            <th>NRP</th>
            <th>Nama Karyawan</th>
            <th>Departmen</th>
            <th>Seksi</th>
            <th>Golongan</th>
            <th>Jabatan</th>

            <th>Persetujuan</th>
            <th>Keterangan</th>
            <?php
            if ($ceks->level == "director") {?>
            <th class="text-center" width="100"></th>
            <?php
            } ?>
          </thead>
          <tbody>
            <?php
            $no = 1;
            foreach ($v_persetujuan ->result() as $baris) {
            ?>
              <tr>
                <td><?php echo $no.'.'; ?></td>
                <td><?php echo $baris->no_permohonan; ?></td>

                <td><?php echo $baris->judul_training; ?></td>
                <td><?php echo $baris->penyelenggara; ?></td>
                <td><?php echo $baris->tempat; ?></td>
                <td><?php echo $baris->waktu; ?></td>
                <td><?php echo $baris->biaya; ?></td>
                <td><?php echo $baris->tujuan; ?></td>
                <td><?php echo $baris->tgl_permohonan; ?></td>

                <td><?php echo $baris->nm_karyawan;?></td>
                <td><?php echo $baris->dept; ?></td>
                <td><?php echo $baris->seksi; ?></td>
                <td><?php echo $baris->gol; ?></td>
                <td><?php echo $baris->jab; ?></td>

                <td><?php echo $baris->persetujuan; ?></td>
                <td><?php echo $baris->keterangan; ?></td>
                <?php
                if ($ceks->level == "director") {?>
                <td>
                  <a href="web/persetujuan_edit/<?php echo $baris->kd_persetujuan; ?>" title="Edit"><span class="icon-pencil"></span></a>
                  <a href="web/persetujuan_hapus/<?php echo $baris->kd_persetujuan; ?>" title="Hapus" onclick="return confirm('Apakah Anda yakin?')"><span class="icon-trash"></span></a>
                </td>
                <?php
                } ?>
              </tr>
            <?php
            $no++;
            } ?>
          </tbody>
        </table>
        </div>
      </div>
      <!-- /basic datatable -->
    </div>
    <!-- /dashboard content -->

Kenapa hasil loadnya

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