我开发了一个简单的登录系统,它运行正常但失败了,我需要知道原因。
问题:如何显示导致失败的原因?
这是数据库功能:
function login($email,$password)
{
$this->db->where("email",$email);
$this->db->where("password",$password);
$query=$this->db->get("users");
if($query->num_rows()>0)
{
foreach($query->result() as $rows)
{
//add all data to session
$newdata = array(
'user_id' => $rows->id,
'user_name' => $rows->username,
'user_email' => $rows->email,
'logged_in' => TRUE,
);
}
$this->session->set_userdata($newdata);
return true;
}
return false;
}
这是逻辑:
public function login()
{
$this->load->library('form_validation');
// field name, error message, validation rules
$this->form_validation->set_rules('email', 'Your Email', 'trim|required|valid_email');
$this->form_validation->set_rules('password', 'Password', 'trim|required|min_length[4]|max_length[32]');
if($this->form_validation->run() == FALSE)
{
$this->signin();
}
else
{
$email=$this->input->post('email');
$password=md5($this->input->post('pass'));
$result=$this->user_model->login($email,$password);
if($result)
{
$this->dash();
}
else
{
$data['title']= 'Login Error';
$this->load->view('nav/header', $data);
$this->load->view('login', $data);
$this->load->view('nav/footer', $data);
}
}
}
我知道错误正在发生,因为我重定向回登录页面如果失败并更改标题文本以显示我(现在只在测试模式下)。但是我如何才能找出问题所在呢?
这是检查数据库功能:
function login($email,$password)
{
$this->db->where("email",$email);
$this->db->where("password",$password);
$query=$this->db->get("users");
if($query->num_rows()>0)
{
foreach($query->result() as $rows)
{
//add all data to session
$newdata = array(
'user_id' => $rows->id,
'user_name' => $rows->username,
'user_email' => $rows->email,
'logged_in' => TRUE,
);
}
$this->session->set_userdata($newdata);
return true;
}
return false;
}
答案 0 :(得分:0)
在视图文件
中写下以下代码<section id="notification" >
<?php
if(validation_errors() !== '' ) {
echo "<div class='alert-msg error'>";
echo validation_errors();
echo "</div>";
}
$error = $this->session->flashdata('error');
$success = $this->session->flashdata('success');
if($error)
{
echo "<div class='alert-msg error'>";
echo $this->session->flashdata('error');
echo "</div>";
}
if($success)
{
echo "<div class='alert-msg success'>";
echo $this->session->flashdata('success');
echo "</div>";
}
?>
</section>
并在控制器中的闪存数据中有条件地设置成功/错误消息(见下文)
if($result) {
$this->dash();
$this->session->set_flashdata('success', 'Login successfully.');
} else {
$this->session->set_flashdata('error', 'Login failed');
}
了解更多Flashdata in CI
答案 1 :(得分:0)
我假设您的所有PHP代码都没问题,那么您需要为每个输入设置自定义form-validation-message以了解哪个输入出错并回显它们:
<?php echo validation_errors(); ?>
答案 2 :(得分:0)
对于你改变的答案:
在模型中使用以下逻辑
$qry = $this->db->get_where('users', array('username' => $this->_username ));
if ($qry->num_rows() == 1) {
$user = $qry->row_array();
$submitted_pass = md5($this->_password);
$db_pass = $user['password'];
if ($submitted_pass === $db_pass) {
return $user;
} else {
// wrong username/password
$this->session->set_flashdata('error', $this->errorList[10]);
return FALSE;
}
} else {
// no such username exist
$this->session->set_flashdata('error', $this->errorList[15]);
return FALSE;
}