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这是控制器的片段
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!";
}
}
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!";
}
}
并持续查看和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>
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); } }
在视图中添加表单和名为“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>
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