Question

我已经连接了用户的id，我将它作为参数传递给我的控制器，这是addquestion（$ id），但我一直收到这些错误：

A PHP Error was encountered  Severity: Warning
Message: Missing argument 1 for Questions::addquestion()
Filename: controllers/questions.php
Line Number: 49

A PHP Error was encountered
Severity: Notice
Message: Undefined variable: id
Filename: controllers/questions.php
Line Number: 67

A Database Error Occurred
Error Number: 1048
Column 'question_user_id' cannot be null
INSERT INTO `questions` (`question_user_id`, `question`) VALUES (NULL, 'sdf')
Filename: C:\xampp\htdocs\webdev\askme\system\database\DB_driver.php
Line Number: 330

这是我的观点：

<h1>ASK USERS</h1>
<ul class="list_items">
<?php foreach ($users as $user):?>
    <li>
        <div class="list_name"><b><?php echo $user->username;?></b></div>
        <div class="list_body"><?php echo $user->register_date;?> </div>
        <div class="list_body"> 
            <a href="<?php echo base_url(); ?>questions/addquestion/<?php echo $user->id; ?>">Ask a question</a>
            <!--<?php //echo anchor(//'questions/addquestion/'.$user->id, //'Ask a question'); ?> -->
        </div>
    </li>
<?php endforeach; ?>
</ul>

这是我的控制器中的addquestion函数：

public function addquestion($id) // line 49 
{
    $this->form_validation->set_rules('question','Your Question','trim|required|xss_clean');

    if($this->form_validation->run() == FALSE)
    {
        //Load view and layout
        $data['main_content'] = 'questions/add_question';
        $this->load->view('layouts/main',$data);  
    } 
    else 
    {
        //Validation has ran and passed  
        //Post values to array
        $data1 = array(   
            'question_user_id'      => $id,    
            'question'      => $this->input->post('question')
        );
       if($this->Questions_model->create_question($data1))
       {
            $this->session->set_flashdata('question_created', 'Question sent');
           // Redirect to index page with notification above
            redirect('home/index');
       }
    }
}

请帮助我，我不知道什么是错的

Answer 1

您正在向db字段发送空值，并且它不能为NULL或尝试使question_user_id为NULL 所以你的$id不能为空，它需要任何值，所以请使用check for this

 else {
       if(empty($id)) 
          redirect('home'); // redirect to any page
        $data1 = array(   
            'question_user_id' => $id,    
            'question' => $this->input->post('question')
        );

Answer 2

请试试这个：

      public function addquestion($id='')

Codeigniter错误缺少参数

2 个答案: