Codeigniter检查复选框值 [英] Codeigniter checking checkbox value

问题描述

我使用的是CodeIgniter，我有一个带有复选框的表单，允许用户检查和删除他们上传的照片。

在我的控制器中，我使用 if（isset（$ checked）== 1）来检查用户是否要删除照片。

$ photo_to_table 将设置为空，并传递到 $ this-> tank_auth-> update_user c $ c>执行数据库更新，并在表中将照片字段设置为空。

但在我的代码中，无论我是否检查，当我点击 UPDATE 按钮，它会一直删除照片，我不知道为什么会发生？

有人可以通过我的代码， / p>

控制器：

  $ user_id = $ this-> session-> userdata（'user_id'）; 
 $ profile = $ this-> users-> get_profile_by_id（$ user_id）; 
 
 if（！empty（$ _ FILES ['photo'] ['name']））
 {
 //图片上传过程
} 
 else 
 {
 $ checked = $ this-> input-> post（'remove'）; 
 if（isset（$ checked）== 1）
 {
 $ photo_to_table =''; 
 //这里将删除在目录中删除文件的过程
} 
 else 
 {
 $ photo_to_table = $ profile-> 
} 
} 
 
 if（$ this-> form_validation-> run（））{// validation ok 
 if（！is_null（$ data = $ this-> tank_auth-> update_user（
 $ this-> form_validation-> set_value（'name'），
 $ this-> form_validation-> set_value ，
 $ this-> form_validation-> set_value（'website'），
 $ photo_to_table 
）））
 {
 // success 
 $ this-> session-> set_flashdata（'msg'，'个人资料已更新'）; 
 redirect（current_url（））; 
} 
} 
  

查看： p>

 <？php echo form_open_multipart（$ this-> uri-> uri_string（））; > 
< table border =0> 
 
<？php 
 if（！empty（$ uphoto））{
？> 
< tr> 
< td> 
< div> 
< img src =<？php echo base_url（）。$ userpath。$ uphoto;？> /> 
< / div> 
 
< div> 
< input id =removetype =checkboxname =remove> 
< label for =remove>删除照片< / label> 
< / div> 
< / td> 
< / tr> 
<？php 
} 
？> 
  

谢谢。

解决方案

这里你需要做的是改变这一行...

  if（isset ）== 1）{
  

到

  if（（int）$ checked == 1）{
  

原因是变量$ checked将始终设置它的值是否为1。 $ checked = $ this-> input-> post（'remove'）; 将返回NULL，如果'remove'未在POST数据中设置。

I'm using CodeIgniter and I have a form with a checkbox that allows the user to check and remove their uploaded photo.
In my controller I use if(isset($checked) == 1) to check if the user wants to remove the photo.
$photo_to_table will set empty and pass to $this->tank_auth->update_user() to perform db update, and set photo field to become empty in table. Otherwise, it will remain the same photo.

But in my code, whether I check it or not, when I click UPDATE button, it keeps removing the photo, I wonder why is it happening?

Can someone please go through my code and give an advise?

Controller:

$user_id = $this->session->userdata('user_id');
$profile = $this->users->get_profile_by_id($user_id);

if(!empty($_FILES['photo']['name'])) 
{
    //image upload process
}
else
{
    $checked = $this->input->post('remove');
    if(isset($checked) == 1)
        {
            $photo_to_table = '';
            // here will do remove process to delete file in directory
        }
    else
    {
        $photo_to_table = $profile->photo;
    }
}

    if($this->form_validation->run()) { // validation ok
    if(!is_null($data = $this->tank_auth->update_user(
        $this->form_validation->set_value('name'),
        $this->form_validation->set_value('country'),
        $this->form_validation->set_value('website'),
        $photo_to_table
        ))) 
    { 
        // success
        $this->session->set_flashdata('msg', 'Profile has been updated');
        redirect(current_url());
    }
}

View:

<?php echo form_open_multipart($this->uri->uri_string()); ?>
<table border="0">

<?php
if(!empty($uphoto)){
?>
    <tr>
        <td>
            <div>
                <img src="<?php echo base_url().$userpath.$uphoto; ?>" />
           </div>

           <div>
               <input id="remove" type="checkbox" name="remove">
               <label for="remove">Remove photo</label>
           </div>
       </td>
   </tr>
<?php
}
?>

Thanks.

解决方案

What you need to do here is to change this line ...

if(isset($checked) == 1){

to

if((int) $checked == 1){

The reason is that the variable $checked will always be set whether its value is 1 or not. $checked = $this->input->post('remove'); will return NULL if the 'remove' is not set in the POST data.

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