CodeIgniter form_validation 未显示错误答案

【问题标题】：CodeIgniter form_validation is not showing errorsCodeIgniter form_validation 未显示错误
【发布时间】：2016-09-22 05:11:56
【问题描述】：

我是 CodeIgniter 的新手，我对 form_validation 有疑问：

我创建了一个控制器来进行身份验证，这是我的控制器

================================================ =============================

public function auth()
{
    $this->load->helper(array('from','url'));

    $this->load->library('form_validation');

    $rules = array(
        array(
            'field' => 'username',
            'label' => 'username',
            'rules' => 'required'
        ),
        array(
            'field' => 'password',
            'label' => 'Password',
            'rules' => 'required'
        )
    );
    $this->form_validation->set_rules($rules);

    if ($this->form_validation->run() == false) {
        $this->load->view('login');
    } else {
        echo ';) like a boss';
    }
    }
}

================================================ =================

我还创建了登录视图。这是查看代码

================================================ =================

<section class="container">
    <div class="login">
        <h1>Login to Web App</h1>
        <?php
        $this->load->helper('form');
        echo validation_errors();
        echo form_open('login/auth');
        $username = form_input(array('name' => 'username', 'placeholder' => 'Username or Email'));
        $password = form_password(array('name' => 'password', 'placeholder' => 'Password'));
        $checkbox = form_checkbox('remember', '1');
        $submit = form_submit('submit', 'Login');
        ?>
        <p><?= $username ?></p>
        <p><?= $password ?></p>
        <p class="remember_me">
            <label>
                <?= $checkbox ?>
                Remember me on this computer
            </label>
        </p>
        <p class="submit"><?= $submit ?></p>
        <?php echo form_close(); ?>
    </div>
</section>

【问题讨论】：

你的问题到底是什么？
请检查你的控制器有错别字$this->load->helper(array('from','url'));什么from？

标签： php codeigniter validation codeigniter-3

【解决方案1】：

你的代码中多了一个尖括号

public function auth()
{
    $this->load->helper(array('from','url'));

    $this->load->library('form_validation');

    $rules = array(
        array(
            'field' => 'username',
            'label' => 'username',
            'rules' => 'required'
        ),
        array(
            'field' => 'password',
            'label' => 'Password',
            'rules' => 'required'
        )
    );
    $this->form_validation->set_rules($rules);

    if ($this->form_validation->run() == false) {
        $this->load->view('login');
    } else {
        echo ';) like a boss';
    }`enter code here`
}

【讨论】：

【解决方案2】：

从底部删除一个右括号

更改为$this->load->helper(array('form','url'));

public function auth() {

  $this->load->helper(array('form','url'));

  $this->load->library('form_validation');

  $rules = array(
    array(
        'field' => 'username',
        'label' => 'username',
        'rules' => 'required'
    ),
    array(
        'field' => 'password',
        'label' => 'Password',
        'rules' => 'required'
    )
   );
   $this->form_validation->set_rules($rules);

   if ($this->form_validation->run() == false) {
     $this->load->view('form-new');
   } else {
      echo ';) like a boss';
   }
}

【讨论】：

【解决方案3】：

这将是减少人类工作量的 codeignitor 助手

 $this->load->helper(array('from','url'));

This would be the library function which validation process works

$this->load->library('form_validation');
$this->form_validation->set_rules('username', 'Username', 'required');
$this->form_validation->set_rules('password', 'Password', 'required');


 if ($this->form_validation->run() == false) {
//code       
  }else{
// code
}

//在codeignitor中设置规则请查看以下网址

参考：

https://www.codeigniter.com/user_guide/libraries/form_validation.html

【讨论】：