使用codeigniter的下拉列表不會丟失任何數據

Question

在下面的codeigniter代碼中，我已經放置了控制器，模型和視圖部分。我的目標是從考試表中刪除考試名稱。在我的情況下，它是從考試表中刪除考試名稱請幫我做這件事。 控制器

public function index() 
{ 
    //echo "inside form upload"; 

    $data = array(); 
    //$college_name = $this->session->userdata('college_name'); 
    if($query = $this->import_model->get_exam_data()) 
    { 
     $data['exam_data'] = $query; 
    } 
    //$this->load->view('student_view', $data); 

    $this->load->view('form_upload'); 
} 

模型

function get_exam_data() 
{ 
    //$this->db->distinct(); 
    $this->db->select("CONCAT(exam_name, ' ', month,' ',year) AS fullexamname", FALSE);//this will concat the value 
    //$this->db->where('college_name',$college_name); 
    $query = $this->db->get('exam_table'); 
    return $query->result(); 
} 

視圖

<?php 
    $data = array(); 
    $data["Select Exam Name"] = "Select Exam Name"; 
    foreach ($exam_data as $row) 
    { 
     $data[$row->fullexamname] = $row->fullexamname; 
    } 
    echo form_dropdown('exam_name', $data, 'small', 'class="dropdown_class" id="exam_name_id" '); 
?> 

*

Answer 1

你必須從控制器通過$data到您的視圖文件

$this->load->view('form_upload',$data);