forms - CI - 忘记密码表单验证以检查数据库中是否存在电子邮件地址

Question

我是 Codeigniter 的新手，需要设置表单验证规则和自定义验证消息，以检查以忘记密码表单提交的数据库中是否存在电子邮件地址。如果电子邮件地址存在，则发送电子邮件，如果不存在，则应重新加载表单，将字段值设置为用户输入的内容并提供电子邮件地址不存在的错误。

我在 Controller 中有以下内容...

public function forgot_password()
{
    $this->form_validation->set_rules('email_address','Email Address','trim|required|valid_email');

    if($this->form_validation->run() == FALSE)
    {
        $this->forgot_password_form();
    }
    else
    {
        $this->load->model('membership_model');
        if($query = $this->membership_model->val_forgot_password())
        {
            $data['main_content'] = 'forgot_password_sent';
            $this->load->view('includes/template', $data);
        }
        else
        {
            $this->form_validation->set_message('email_address','The email address you provided does not exist.');
            $this->forgot_password_form();
        }
    }
}

并在模型中...

public function val_forgot_password()
{
    $this->db->where('email_address', $this->input->post('email_address'));
    $query = $this->db->get($this->members);

    if($query->num_rows == 1)
    {
        return true;
    }
    else
    {
        return false;
    }
}

表格是...

<?php

echo form_open('login/forgot_password');
echo "Email Address: " . form_input('email_address', set_value('email_address', ''));
echo br(2);
echo form_submit('submit','Send Email');
echo form_close();
echo br(1);

echo validation_errors('<p>Error: ');

?>

当表单使用有效的电子邮件地址提交时，它会正确转到成功页面，但如果电子邮件地址不存在，它似乎会重新加载表单但不会出错。

请帮助! :D

Answer 1

您应该使用回调来检查电子邮件是否存在。所以你的 Controller 会像......

public function forgot_password()
{
    $this->form_validation->set_rules('email_address','Email Address','trim|required|valid_email|callback__check_email_exists');

    if($this->form_validation->run() == FALSE)
    {
       // VALIDATION ERRORS, SHOW VIEWS
    }
    else
    {
      // ALL IS GOOD, UPDATE EMAIL, AND REDIRECT TO CURRENT URL
    }
}

您的回调(仍在您的 Controller 中)将类似于...

public function _check_email_exists($email)
{
  // LOAD AND USE YOUR MODEL TO CHECK EMAIL EXISTS HERE
  if ( ! $email_exists )
  {
    $this->form_validation->set_message('email_address', 'That email address don\'t exist, sucka!');
    return FALSE;
  }
  else
  {
    return TRUE;
  }
}

所有这些都在此处的优秀 CI 文档中详细说明，如果您不熟悉 CI，我建议您遵守 CI 约定。

http://codeigniter.com/user_guide/libraries/form_validation.html

编辑:我在 codeigniter3 中执行此操作时还面临另一个问题。您必须将消息字段名称命名为回调。所以，而不是 $this->form_validation->set_message('email_address', 'That email address don\'t exist, sucka!');
这应该是
$this->form_validation->set_message('_check_email_exists', 'That email address don\'t exist, sucka!');