Tampilan Blank Saat Komentar di Publish

Assalamualaikum mas...
 
Ini kenapa ya komentar saat di publish malah blank.. apakah ada yang salah dalam scriptnya padahal ini script copy di SIKOLAG. mohon bantuannya...
 
------------------------------ controller -------------------------------------
public function detail(){
		$query = $this->model_utama->view_join_two('berita','users','kategori','username','id_kategori',array('judul_seo' => $this->uri->segment(3)),'id_berita','DESC',0,1);
		if ($query->num_rows()<=0){
			redirect('main');
		}else{
			$row = $query->row_array();
			$data['title'] = cetak($row['judul']);
			$data['description'] = cetak_meta($row['isi_berita'],0,500);
			$data['keywords'] = cetak($row['tag']);
			$data['rows'] = $row;
 
			$dataa = array('dibaca'=>$row['dibaca']+1);
			$where = array('id_berita' => $row['id_berita']);
			$this->model_utama->update('berita', $dataa, $where);
 
			$this->load->helper('captcha');
			$vals = array(
                'img_path'	 => './captcha/',
                'img_url'	 => base_url().'captcha/',
                'font_path' => './asset/Tahoma.ttf',
                'font_size'     => 25,
                'img_width'	 => '150',
                'img_height' => 45,
                'border' => 0, 
                'word_length'   => 5,
                'expiration' => 7200
            );
 
            $cap = create_captcha($vals);
            $data['image'] = $cap['image'];
            $this->session->set_userdata('mycaptcha', $cap['word']);
			$this->template->load(template().'/template',template().'/detailberita',$data);
		}
	}
 
	function kirim_komentar(){
		if (isset($_POST['submit'])){
			$cek = $this->model_utama->view_where('berita',array('id_berita' => $this->input->post('a')));
			$row = $cek->row_array();
			if ($cek->num_rows()<=0){
				redirect('main');
			}else{
				if ($this->input->post() && (strtolower($this->input->post('secutity_code')) == strtolower($this->session->userdata('mycaptcha')))) {
					$data = array('id_berita'=>cetak($this->input->post('a')),
		                            'nama_komentar'=>cetak($this->input->post('b')),
		                            'url'=>cetak($this->input->post('c')),
		                            'isi_komentar'=>cetak($this->input->post('d')),
		                            'tgl'=>date('Y-m-d'),
		                            'jam_komentar'=>date('H:i:s'),
		                            'aktif'=>'N',
		                            'email'=>cetak($this->input->post('e')));
					$this->model_utama->insert('komentar',$data);
				}
			}
 
			redirect('berita/detail/'.$row['judul_seo']);
 
		}
	}
 
-------------------------------------- View -----------------------------------------------------
 
<div class="card">
			<div class="card-header">
				<h3>Komentar Yuk!</h3>
			</div>
			<div class="card-content komentar">
				<form action="<?php echo base_url(); ?>berita/kirim_komentar" method="POST"  id="form_komentar">
					<div class="row">
						<div class="input-field col s12">
							<input type="hidden" name='a' value='<?php echo "$rows[id_berita]"; ?>'>
						</div>
					</div>
					<div class="row">
				        <div class="input-field col s12">
				          <input placeholder="Nama Lengkap" id="nama" name='b' type="text" class="validate" required>
				          <label for="nama"><b>Nama Anda</b></label>
				        </div>
				     </div>
				     <div class="row">
				        <div class="input-field col s12">
				          <input placeholder="Email Anda" id="email" name='e' type="email" class="validate" required>
				          <label for="email"><b>Email</b></label>
				        </div>
				     </div>
				     <div class="row">
				        <div class="input-field col s12">
				          <input placeholder="Website Jika Ada" id="website" name='c' type="text" class="validate">
				          <label for="website"><b>Website</b></label>
				        </div>
				     </div>
				     <div class="row">
				        <div class="input-field col s12">
				          <textarea id="textarea1" name='d' class="materialize-textarea" placeholder="Kasih Komentar Anda" required></textarea>
				          <label for="komentar"><b>Komentar</b></label>
				        </div>
				     </div>
				     <div class="row">
				        <div class="input-field col s3">
				          <?php echo $image; ?>
				        </div>
				        <div class="input-field col s9">
				          <input name='secutity_code' maxlength=6 placeholder="Masukan Kode Chapca di Samping" id="capcha" type="text" class="validate">
				          <label for="capcha"><b>Kode Capcha</b></label>
				        </div>
				     </div>
				     <div class="row">
				     	<button class="bg-biru  waves-effect waves-light btn right">Publikasi Komentar</button>
				     </div>
 
				</form>
			</div>
		</div>