php - 简单的 Codeigniter 表单验证

Question

我的登录表单有这样的问题

我想在每个字段旁边显示一个单独的错误

这是 Controller

function index()
{      
        $this->form_validation->set_rules('username','Username','trim|required|exact_length[4]|xss_clean');
        $this->form_validation->set_rules('password','Password','trim|required|min_length[4]|max_length[40]|xss_clean|callback_login');
        $this->form_validation->set_rules('jabatan','Jabatan','trim|required|xss_clean');

        if($this->form_validation->run() == false)
        {
            $this->load->view('login');
        }
        else
        {
            $this->load->view('welcome_message');
        }

}

function login()
{
    $username = $this->input->post('username');
    $password = $this->input->post('password');
    $jabatan = $this->input->post('jabatan');

    $value = $this->m_login->login($username,$password,$jabatan);

    if($value)
    {
        return true;
    }
    else
    {
        $this->form_validation->set_message('login', 'password salah');
        //delete redirect() and showing blank white screen
        return false;

    }

我制作了 <?php echo form_error(); ?>在每个字段旁边

<?php echo form_open('c_login/login'); ?>
            <table>
                <tr>
                    <td>Username</td>
                    <td><?php $inusername=array('name' => 'username', 'class' => 'GUI'); echo form_input($inusername); ?></td>
                    <td class="error"><?php echo form_error('username'); ?></td>
                </tr>

                <tr>
                    <td>Password</td>
                    <td><?php $inpassword=array('name' => 'password', 'class' => 'GUI', 'type' =>'password'); echo form_input($inpassword); ?></td>
                    <td class="error"><?php echo form_error('password'); echo $this->session->flashdata('login'); ?></td>
                </tr>

                <tr>
                    <td>Jabatan</td>
                    <td><?php $injabatan=array('keuangan' => 'keuangan', 'admin' => 'admin', 'hd' => 'head divisi', 'direktur' => 'direktur'); echo form_dropdown('jabatan',$injabatan,'keuangan','class = "gui"'); ?></td>
                    <td class="error"><?php echo form_error('jabatan'); ?></td>
                </tr>

                 <tr>
                    <td></td>
                    <td><?php $insubmit=array('name' =>'login','class' =>'button','value' => 'Login'); echo form_submit($insubmit); echo nbs(); $inreset=array('name' =>'reset','class' =>'button','value' => 'Hapus'); echo form_reset($inreset); ?></td>
                    <td class="error"><?php echo form_error(); ?></td>
                </tr>
            </table>
            <?php echo form_close(); ?>

form_error()怎么来的？功能不是echo当我使用 username 单击登录时正在执行任何操作和 password字段留空？

Answer 1

您知道验证中的问题您正在检查类的索引方法中的验证，而不是类的登录方法中的验证，并且在您的表单中，您已经对 ci_login/login 方法进行了操作，如果登录失败，该方法将重定向并清除表单验证也在登录方法上验证您的字段，并将所有错误消息放入 session 并显示，我已经对脚本进行了一些更改，请查看此链接上的此处 Code modified

对于这个改变你必须使用 url helper

function index()
{
    $this->form_validation->set_rules('username','Username','trim|required|exact_length[4]|xss_clean');
    $this->form_validation->set_rules('password','Password','trim|required|min_length[4]|max_length[40]|xss_clean|callback_login');
    $this->form_validation->set_rules('jabatan','Jabatan','trim|required|xss_clean');

    if($this->form_validation->run() == false)
    {
        $this->load->view('login');
    }
    else
    {
        //to check if the validation run correctly
        //$this->load->view('welcome_message');

        $username = $this->input->post('username');
        $password = $this->input->post('password');
        $jabatan = $this->input->post('jabatan');

        $value = $this->m_login->login($username,$password,$jabatan);

        if($value)
        {
            redirect('welcome_message');
            //return true;
        }
        else
        {
            $this->form_validation->set_message('login', 'password salah');
            redirect('c_login',$login); //i want to pass $login into login form, then print
            return false;               //them as a form_error

        }
    }

}


<?php echo form_open(uri_string()); ?>
<table>
    <tr>
        <td>Username</td>
        <td><?php $inusername=array('name' => 'username', 'class' => 'GUI'); echo form_input($inusername); ?></td>
        <td class="error"><?php echo form_error('username'); ?></td>
    </tr>

    <tr>
        <td>Password</td>
        <td><?php $inpassword=array('name' => 'password', 'class' => 'GUI', 'type' =>'password'); echo form_input($inpassword); ?></td>
        <td class="error"><?php echo form_error('password'); echo $this->session->flashdata('login'); ?></td>
    </tr>

    <tr>
        <td>Jabatan</td>
        <td><?php $injabatan=array('keuangan' => 'keuangan', 'admin' => 'admin', 'hd' => 'head divisi', 'direktur' => 'direktur'); echo form_dropdown('jabatan',$injabatan,'keuangan','class = "gui"'); ?></td>
        <td class="error"><?php echo form_error('jabatan'); ?></td>
    </tr>

     <tr>
        <td></td>
        <td><?php $insubmit=array('name' =>'login','class' =>'button','value' => 'Login'); echo form_submit($insubmit); echo nbs(); $inreset=array('name' =>'reset','class' =>'button','value' => 'Hapus'); echo form_reset($inreset); ?></td>
        <td class="error"><?php echo form_error(); ?></td>
    </tr>
</table>
<?php echo form_close(); ?>