Question

我在表中获取10条记录，现在我有一个名为DELETE的表列标题，下面有复选框现在我想删除单击该DELETE按钮的已检查记录。请告诉如何在php codeigniter中执行此操作

<table>
     <tr>
            <td>Id</td>  
            <td>Name</td>  
            <td>Car</td>  
            <td>Address</td>  
            <td>Phone Number</td> 
            <td><a href="<?php echo site_url('User1/delete/'); ?>">Delete</td>          
            <td>Action </td>    
    </tr>

     <?php foreach($posts as $a){  ?>
     <tr>
            <td><?php echo $a->id;?></td>  
            <td><?php echo $a->name;?></td>  
            <td><?php echo $a->car;?></td>  
            <td><?php echo $a->address;?></td>  
            <td><?php echo $a->cell_number;?></td>  
            <td>
            <input type="checkbox" name="id" value="$a->id"><br>
            </td>
      </tr>    
     <?php }?>  
   </table>

控制器代码

function delete($id){
    $result = $this->User_model->deletebyid($id);
    if($result==true)
    return true;
}

型号代码

function deletebyid($id){
    $this->db->where('id', $id);
    $this->db->delete('user_table');
    if ($this->db->affected_rows() > 0) {
      return true;
    }else {
      return false;
    }
}

获取此错误

A Database Error Occurred

Error Number: 1054

Unknown column 'Array' in 'where clause'

DELETE FROM `user_table` WHERE `id` = `Array`

Filename: C:/xampp/htdocs/codeigniter/system/database/DB_driver.php

Line Number: 691

Answer 1

<form method='post' action='<?php echo site_url('User1/delete/'); ?>' >
<table>
     <tr>
            <td>Id</td>  
            <td>Name</td>  
            <td>Car</td>  
            <td>Address</td>  
            <td>Phone Number</td> 
            <td><input type="submit" name="delete" value="Delete" /></td>          
            <td>Action </td>    
    </tr>

     <?php foreach($posts as $a){  ?>
     <tr>
            <td><?php echo $a->id;?></td>  
            <td><?php echo $a->name;?></td>  
            <td><?php echo $a->car;?></td>  
            <td><?php echo $a->address;?></td>  
            <td><?php echo $a->cell_number;?></td>  
            <td>
            <input type="checkbox" name="r_id[]" value="<?php echo $a->id; ?>"><br>
            </td>
      </tr>    
     <?php }?>  
   </table>  
</form>

控制器：

function delete($id){
echo "<pre>";print_r($_POST['r_id']);exit; // you will get all selected check box values. (which are the record ids. You just send this ids to model and delete them using sql IN operator [ex: id IN ('') ].
...
...
...
            }

Answer 2

在您的代码中进行此更改以使其正常工作

<input type="checkbox" name="record_ids[]" value="$a->id">

在您的控制器中访问它们

<强>控制器

function delete(){
   $record_ids = $this->input->post('record_ids');

   $result = $this->User_model->deletebyid($record_ids);
   if($result==true)
      return true;    
}

<强>模型

----更新处理单删除----

function deletebyid($ids){
   if(is_array($ids))
      $this->db->where_in('id', $ids);
   else
      $this->db->where('id',$ids);
   $this->db->delete('user_table');
   if ($this->db->affected_rows() > 0) {
     return true;
   }
   else
     return false;
 }

Answer 3

尝试这样的事情。您将记录ID放在链接中型号：

function delete_row() //model named displaym
{
    $this->db->where('id', $this->uri->segment(3)); //this will be the table row ID
    $this->db->delete('table');//table name
}

控制器

public function delete()
{
    $this->is_logged_in();
    $this->displaym->delete_row();
    redirect("page");
}

链接到删除控制器时

anchor("updates/delete/" . $row->id, //send table row ID to the model as the 3rd segement

通过单击表标题中的“删除”按钮来删除数据

3 个答案: