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php - 为什么我通过 jquery ajax 和 codeigniter 得到验证错误?

转载 作者:可可西里 更新时间:2023-11-01 13:11:25 26 4
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为什么我的 ajax 请求确实得到一个 FALSE 字符串(它应该从 Controller 得到错误消息)?

这是 Controller 的片段

    function ajax_verify(){
$this->form_validation->set_rules('username', '', 'max_length[25]|min_length[4]|trim|required|xss_clean');
$this->form_validation->set_rules('email', '', 'valid_email|required|trim|xss_clean');

if($this->form_validation->run()==FALSE){
$errors = $this->form_validation->error_array();
echo json_encode($this->form_validation->error_array());
}else{
echo "Success!";
}

}

我扩展了库以获取错误消息(它在 php 验证中工作得很好)

class MY_Form_validation extends CI_Form_validation{


function __construct(){
parent::__construct();
}

function error_array(){
if(count($this->_error_array)===0){
return FALSE;
}else{
return $this->_error_array;
}
}

function get_tae(){
return "TAE!";
}
}

最后是 View 和 jquery ajax 代码(返回 false 而不是错误)。

     <!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8">
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.7/jquery.js"></script>
<title>Title</title>
<body>

<?php //echo validation_errors('<div class="error">', '</div>');?>
<?php echo form_open('ajax/ajax_verify', array('id'=>'my_form'));?>
<?php echo form_label('Username'); ?>
<?php echo form_input('username', '', array('id' => 'username'));?>
<?php echo form_label('Email Address'); ?>
<?php echo form_input('email', '', array('id' => 'email')); ?>
<?php echo form_submit('submit', 'Submit'); ?>
<?php echo form_close();?>

<script type="text/javascript">
$(function(){
$('#my_form').submit(function(e){
$.get('ajax_verify', function(data){
$('#contents').append(data);
}, 'json') ;
e.preventDefault();
})


});
</script>

最佳答案

试试这个。它会正常工作。

在 Controller 中添加这两个方法

 public function CreateStudents() {

$this->load->helper('form');

$data['title'] = "Create Students Page";
$data['success'] = "";
$this->load->view('templates/header', $data);
$this->load->view('createstudents', $data);
$this->load->view('templates/footer', $data);

}

public function CreateStudentsAjax() {

$this->load->helper('form');
$this->load->library('form_validation');
$this->form_validation->set_error_delimiters('', '');

$this->form_validation->set_rules('roll', 'Roll Number', 'required');
$this->form_validation->set_rules('name', 'Name', 'required');
$this->form_validation->set_rules('phone', 'Phone', 'required');

if ($this->form_validation->run()) {

$this->welcome_model->InsertStudents();
echo json_encode("Oks");
} else {

$data = array(
'roll' => form_error('roll'),
'name' => form_error('name'),
'phone' => form_error('phone')
);

echo json_encode($data);
}
}

在 View 中添加 form 和一个名为“mesage”的 DIV

<div id="message">


</div>

<?php echo form_open('welcome/CreateStudentsAjax'); ?>

<label for="roll">Student Roll Number</label>
<input type="text" id="txtRoll" value="" name="roll"/>

<label for="Name">Students Name</label>
<input type="text" id="txtName" value="" name="name"/>

<label for="Phone">Phone Number</label>
<input type="text" id="txtPhone" value="" name="phone"/>

<input type="submit" name="submit" value="Insert New Students" />

<?php echo '</form>'; ?>

现在脚本包含

<script type="text/javascript">

$(document).ready(function(){

$('form').submit(function(){
//alert('ok');
$.ajax({
url:this.action,
type:this.method,
data:$(this).serialize(),
success:function(data){
var obj = $.parseJSON(data);

if(obj['roll']!=null)
{
$('#message').text("");
$('#message').html(obj['roll']);
$('#message').append(obj['name']);
$('#message').append(obj['phone']);
}
else
{
$('#message').text("");
$('#message').html(obj);
}

},
erro:function(){
alert("Please Try Again");
}
});
return false;
});
});

</script>

关于php - 为什么我通过 jquery ajax 和 codeigniter 得到验证错误?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/10243501/

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