目前為止，我們學會了怎麼查詢資料和新增資料。
接下來，我們來寫刪除資料的方法。

首先，回到controller/students.php新增：

public function remove()
        {
                $this->load->helper('form');
                $this->load->library('form_validation');

                $data['title'] = 'Remove a student';

                $this->form_validation->set_rules('student_name', 'student_name', 'required');

                if ($this->form_validation->run() === FALSE)
                {
                        $this->load->view('templates/header', $data);
                        $this->load->view('class/remove',$data);
                        $this->load->view('templates/footer');
                }
                else
                {
                        $data['title'] = 'remove success!';
                        $this->student_model->remove_student();
                        $this->load->view('class/success',$data);
                }
        }

接著到view/class底下新增remove.php並加入以下內容：

<h2><?php echo $title ?></h2>

<?php echo validation_errors(); ?>

<?php echo form_open('index.php/students/remove') ?>
    <label for="student_name">Name</label>
    <input type="input" name="student_name" /><br />

    <input type="submit" name="submit" value="Remove a student" />

</form>

再至student_model.php新增：

public function remove_student()
		{
			$name = $this->input->post('student_name');
			$this->db->where('name', $name)->delete('class');
		}

然後打開 http://localhost/ci/index.php/students/remove
並輸入欲刪除的學生的名字

應該就可以看到Success了

回到http://localhost/ci/index.php/students/index 查看已經沒有該筆資料了