在错误条件下CodeIgniter验证问题 - CodeIgniter validation issue on false condition?

CodeIgniter validation issue on false condition?

我正在使用CodeIgniter表单验证库。

示例视图:

<html>
    <head>
        <title>My Form</title>
    </head>
    <body>
        <?php echo validation_errors(); ?>
        <?php echo form_open('form'); ?>
            <h5>Username</h5>
            <input type="text" name="username" value="" size="50" />
            <h5>Password</h5>
            <input type="text" name="password" value="" size="50" />
            <h5>Password Confirm</h5>
            <input type="text" name="passconf" value="" size="50" />
            <h5>Email Address</h5>
            <input type="text" name="email" value="" size="50" />
            <div><input type="submit" value="Submit" /></div>
        </form>
    </body>
</html>

控制器

<?php
    class Form extends CI_Controller {
        function index()
        {
            $this->load->helper(array('form', 'url'));
            $this->load->library('form_validation');
            $this->form_validation->set_rules('username', 'Username', 'required');
            $this->form_validation->set_rules('password', 'Password', 'required');
            $this->form_validation->set_rules('passconf', 'Password Confirmation', 'required');
            $this->form_validation->set_rules('email', 'Email', 'required');
            if ($this->form_validation->run() == FALSE)
            {
                $this->load->view('myform');
            }
            else
            {
                $this->load->view('formsuccess');
            }
        }
    }
?>

在这种情况下，当我填写用户名，密码，确认密码和电子邮件留下空白，提交表单后，它得到一个错误的电子邮件要求。很好，但是在这种情况下，我的用户名，密码，确认密码字段也丢失了数据，所以在这种情况下，如果发生任何错误，请帮助我。

<input type="text" name="username" value=<?php echo $this->input->post("username");?> size="50" />

最后我找到了解决方案:

我们必须像这样在value形参中使用set_value():

<?php echo set_value('username'); ?>

最好的方法是通过Ajax post使用它。不需要混淆是否。

将您的表单代码替换为以下代码:

<form>
    <h5>Username</h5>
    <input type = "text" name = "username" value = "<?php if (validation_errors()) { echo set_value('username'); } ?>" size = "50" />
    <h5>Password</h5>
    <input type = "text" name = "password" value = "<?php if (validation_errors()) { echo set_value('password'); } ?>" size = "50" />
    <h5>Password Confirm</h5>
    <input type = "text" name = "passconf" value = "<?php if (validation_errors()) { echo set_value('passconf'); } ?>" size = "50" />
    <h5>Email Address</h5>
    <input type = "text" name = "email" value = "<?php if (validation_errors()) {   echo set_value('email'); } ?>" size = "50" />
    <div><input type = "submit" value = "Submit" /></div>
</form>

使用说明:

<html>
    <head>
        <title>My Form</title>
    </head>
    <body>
        <?php echo validation_errors(); ?>
        <?php echo form_open('form'); ?>
        <h5>Username</h5>
        <input type="text" name="username" value="<?php echo set_value('username');?>" size="50" />
        <h5>Password</h5>
        <input type="text" name="password" value="<?php echo set_value('password');?>" size="50" />
        <h5>Password Confirm</h5>
        <input type="text" name="passconf" value="<?php echo set_value('passconf');?>" size="50" />
        <h5>Email Address</h5>
        <input type="text" name="email" value="<?php echo set_value('email');?>" size="50" />
        <div><input type="submit" value="Submit" /></div>
        </form>
    </body>
</html>