在codeigniter中使用jquery AJAX 进行表单验证

4sup72z8  于 2022-12-07  发布在  jQuery
关注(0)|答案(6)|浏览(211)

如果我不想刷新页面，如何在codeigniter中进行表单验证？基本上我是这样做的：

$config = array(
            array(
                    'field' => 'c_name',
                    'label' => 'Name',
                    'rules' => 'trim|required'
            ),
            array(
                    'field' => 'c_job',
                    'label' => 'Job',
                    'rules' => 'trim|required',
                    )
    );
    $this->form_validation->set_rules($config);
    if($this->form_validation->run() == true)
            {
                $this->load->model('model');
                //.....
            }
    else{
            $this->load->view('view');
        }

但如果我用 AJAX 发送数据，页面不刷新，我怎么做表单验证？
编辑：
谢谢@ Amra Kojon。这很好，也很有效，但新的问题是：

if ($this->form_validation->run() == FALSE) {
                echo validation_errors();
                } 
                else {
                        //echo 'hi';

                        $value = $this->input->post('value');

                        $values = array(
                                'c_name' => $value['c_name'],
                                'c_job'=> $value['c_job'],
                                'c_address'=> $value['c_address'],
                                'c_phone'=> $value['c_phone'],
                                'c_mail'=> $value['c_mail'],
                                'c_state'=> $value['c_state'],
                                'c_intrest'=> $value['c_intrest'],
                                'c_added_info'=> $value['c_added_info']
                        );

                        $add = $this->customers_model->add_customer($values);
                        echo $add;
                }

如果我只是说echo“something”在else部分，它的工作，如果验证是OK，它echo hi，但如果我在数据库中写主题（其中值数组有数据，而不是 AJAX 方式，它插入日期），它不工作，else部分不工作！！！

codeigniter

6条答案

按热度按时间
hgqdbh6s

hgqdbh6s1#

如果你给你的js-jquery AJAX 代码，它会更有效地理解你的问题...别担心！试试我下面的说明...

  1. Get获取窗体值并作为传递给窗体
    如果您有任何问题，请在这里输入您的问题。如果你想在一个文件中找到一个文件，那么你可以在一个文件中找到一个文件。} }）; }）
    控制器：
    1.将构造中的库form_validation加载为...
    这是一个很好的例子。
    加载帮助器（'form'）;
    1.现在将控制器编写为...
function MethodName {
$this->form_validation->set_error_delimiters('', '');
$this->form_validation->set_rules('fname','First Name', 'required');
$this->form_validation->set_rules('lname','Last Name', 'required');
$this->form_validation->set_rules('email','Email Address','required|valid_email|is_unique[sec_users.email]');
if ($this->form_validation->run() == FALSE) {
    echo validation_errors();
} 
else {
  // To who are you wanting with input value such to insert as 
  $data['frist_name']=$this->input->post('fname');
  $data['last_name']=$this->input->post('lname');
  $data['user_name']=$this->input->post('email');
  // Then pass $data  to Modal to insert bla bla!!
}

}

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lztngnrs

lztngnrs2#

我知道你的问题已经有一年了，但是你可以用这个来做最新的引导程序

<?php

class Yourcontroller extends CI_Controller {

    public function __construct() {
        parent::__construct();
        $this->load->library('form_validation');
    }

    public function index() {
        $this->load->view('template/register');
    }

    public function validate() {

        $json = array();

        $this->form_validation->set_rules('username', 'Username', 'required');
        $this->form_validation->set_rules('email', 'Email', 'trim|required|valid_email');
        $this->form_validation->set_rules('password', 'Password', 'required|min_length[5]');
        $this->form_validation->set_rules('confirm_password', 'Confirm Password', 'required|matches[password]');
        $this->form_validation->set_rules('code', 'Login Code', 'required|numeric|min_length[4]||max_length[8]');

        $this->form_validation->set_message('required', 'You missed the input {field}!');

        if (!$this->form_validation->run()) {
            $json = array(
                'username' => form_error('username', '<p class="mt-3 text-danger">', '</p>'),
                'email' => form_error('email', '<p class="mt-3 text-danger">', '</p>'),
                'password' => form_error('password', '<p class="mt-3 text-danger">', '</p>'),
                'confirm_password' => form_error('confirm_password', '<p class="mt-3 text-danger">', '</p>'),
                'code' => form_error('code', '<p class="mt-3 text-danger">', '</p>')
            );
        }

        $this->output
        ->set_content_type('application/json')
        ->set_output(json_encode($json));

    }
}

AJAX 脚本

<script type="text/javascript">
$( document ).ready(function() {
    $('#error').html(" ");

    $('#form-submit-button').on('click', function (e) {
        e.preventDefault();

        $.ajax({
            type: "POST",
            url: "<?php echo site_url('yourcontroller/validate');?>", 
            data: $("#form").serialize(),
            dataType: "json",  
            success: function(data){
                $.each(data, function(key, value) {
                    $('#input-' + key).addClass('is-invalid');

                    $('#input-' + key).parents('.form-group').find('#error').html(value);
                });
            }
        });
    });

    $('#form input').on('keyup', function () { 
        $(this).removeClass('is-invalid').addClass('is-valid');
        $(this).parents('.form-group').find('#error').html(" ");
    });
});
</script>

完整视图代码

<div class="container">
    <div class="row">
        <div class="col-sm-6 ml-auto mr-auto m-auto">
            <div class="card mt-5">
                <h5 class="card-header"></h5>
                <div class="card-body">
                    <?php echo form_open('agent/register', array('id' => 'form', 'role' => 'form'));?>
                    <div class="row">
                    <div class="col-sm-12">
                    <div class="form-group">
                        <?php echo form_input('username', '', array('class' => 'form-control', 'placeholder' => 'Enter Agent Username', 'id' => 'input-username'));?>
                        <div id="error"></div>
                    </div>

                    <hr/>
                    </div>
                    </div>

                    <div class="row">
                    <div class="col-sm-12">
                    <div class="form-group">
                        <?php echo form_input('email', '', array('class' => 'form-control', 'placeholder' => 'Enter Agent Email', 'id' => 'input-email'));?>
                        <div id="error"></div>
                    </div>
                    <hr/>
                    </div>
                    </div>

                    <div class="row">
                    <div class="col-sm-6">
                    <div class="form-group">
                        <?php echo form_password('password', '', array('class' => 'form-control', 'placeholder' => 'Enter Password', 'id' => 'input-password'));?>
                        <div id="error"></div>
                    </div>
                    <hr/>
                    </div>

                    <div class="col-sm-6">
                    <div class="form-group">
                        <?php echo form_password('confirm_password', '', array('class' => 'form-control', 'placeholder' => 'Enter Confirm Password', 'id' => 'input-confirm_password'));?>
                        <div id="error"></div>
                    </div>
                    <hr/>
                    </div>
                    </div>

                    <hr/>

                    <div class="row">
                    <div class="col-sm-12">
                    <div class="form-group">
                        <button type="button" class="btn btn-block btn-dark" id="form-submit-button">Register Agent</button>
                    </div>
                    </div>
                    </div>

                    <?php echo form_close();?>

                </div>
            </div>
        </div>
    </div>
</div>
<script type="text/javascript">
$( document ).ready(function() {
    $('#error').html(" ");

    $('#form-submit-button').on('click', function (e) {
        e.preventDefault();

        $.ajax({
            type: "POST",
            url: "<?php echo site_url('yourcontroller/validate');?>", 
            data: $("#form").serialize(),
            dataType: "json",  
            success: function(data){
                $.each(data, function(key, value) {
                    $('#input-' + key).addClass('is-invalid');

                    $('#input-' + key).parents('.form-group').find('#error').html(value);
                });
            }
        });
    });

    $('#agent-register-form input').on('keyup', function () { 
        $(this).removeClass('is-invalid').addClass('is-valid');
        $(this).parents('.form-group').find('#error').html(" ");
    });
});
</script>
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yeotifhr

yeotifhr3#

如果您知道使用 AJAX 传递数据，那么工作流程如下。
1)通过 AJAX 将表单数据发送到控制器。
2)从现在开始执行表单验证。
3)如果成功，则“echo”值为1
4)如果失败，回显值为0
因此使用echo中的值，您可以确定验证是否失败。

示例 AJAX 代码

$('#form').on('submit', function(e){
    e.preventDefault();
    var data = $(this).serialize();
    $.ajax({
        url: 'your url',
        type: 'POST',
        data: data,
        success: function(data){
            if(data == 1){
                $('#form')[0].reset();
                alret('success');
            }
            else if(data == 0){
                alret('failed');
            }
        },
        error: function(){
            alert('error');
        }
    });
});
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qgelzfjb

qgelzfjb4#

Create MY_Form_validation in libraries folder

<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');

class MY_Form_validation extends CI_Form_validation {
private $json = array();
private $opts = array();

function get_json($extra_array = array(),$error_array=array())
    {
        if(count($extra_array)) {
            foreach($extra_array as $addition_key=>$addition_value) {
                $this->json[$addition_key] = $addition_value;
            }
        }
        $this->json['options'] = $this->opts;
        if(!empty($error_array)){
            foreach($error_array AS $key => $row)
                $error[] = array('field' => $key, 'error' => $row);
        }
        foreach($this->_error_array AS $key => $row)
            $error[] = array('field' => $key, 'error' => $row);

        if(isset($error)) {
            $this->json['status'] = 'error';
            $this->json['errorfields'] = $error;
        } else {
            $this->json['status'] = 'success';      
        }   
        return json_encode($this->json);
    }
}

Call this function in controller if validation failed:
echo $this->form_validation->get_json();

You get the response with form fieldname and errormessage

Example:
{"options":[],"status":"error","errorfields":[{"field":"email","error":"The Mobile Number\/Email\/Username field is required."},{"field":"password","error":"The Password field is required."}]}
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jm81lzqq

jm81lzqq5#

这是我尝试的工作（Codeigniter 3.0）的基本例子，实现你想要做的事情
在视图中包括filename.js

document.getElementById("yourForm").reset();

$(document).ready( function() {
var yourForm = $('#yourForm');
  yourForm.submit( function(event) {
      event.preventDefault();
    $.ajax( {
      type: 'POST',
      url: yourForm.attr( 'action' ),
      data: yourForm.serialize(),
      success: function(data) {
            if (data.code == '200') {
            $('#message').html(data.message);    
            document.getElementById("yourForm").reset();
            }
      },
      error: function(data) {
         var response = data.responseText;
         var obj = jQuery.parseJSON(response);
            if (obj.code == '500') {
                var i;
                for (i = 0; i < obj.field.length; i++) {
                  name = obj.field[i];
                  $('.label-'+name).addClass('label-error');
              errors = JSON.stringify(obj.validation);
              validate = jQuery.parseJSON(errors);
              $('.helper-'+name).html(validate[name]);
                }
            }
      }
    } );
  } );
} );

查看HTML表单示例在本例中，在am using className中，您可以使用id，也可以相应地更改filename.js文件

<form id="yourForm" action="base_url/controller/function_name" action="POST">
// Important text after className "label-" & "helper-" must be input name
<label class="label-firstName">Name</label>
<input type="text" name="firstName" />
<span class="helper-firstName"></span>
</form>
<div id="message"></div>

控制器PHP代码

public function function_name()
{
    if(!empty($_POST)) {

        $this->load->library('form_validation');
        $this->form_validation->set_rules('firstName','First Name','required|max_length[16]');

        if($this->form_validation->run())     
        {
            $params = array(
                'firstName' => $this->input->post('firstName'),
                );
            // Model returning $data['newRecord'] with $params and insertId 
            $data['newRecord'] = $this->Record_model->newRecord($params);

            $reply = array();
            $reply['code'] = 200;
            $reply['record'] = array(
                        'insertId' => $data['newRecord']['insertId'],
                        'firstName' => $data['newRecord']['firstName']
                        );
            $reply['message'] = 'Hello, ' .$data['newRecord']['firstName']. ' - We have received your message. ' .$data['newRecord']['insertId']. ' is your reference ID, for this communication.';            
            header('Content-Type: application/json; charset=UTF-8');
            print json_encode($reply);
        }
        else {
           $validation = $this->form_validation->error_array();
           $field = array();
                    foreach($validation as $key => $value) {
                        array_push($field,$key);
                    }
            $reply = array(
                'code' => 500,
                'field' => $field,
                'validation' => $validation,
                'message' => 'Submission failed due to validation error.'
                );
            header($_SERVER['SERVER_PROTOCOL'] . ' 500 Internal Server Problem', true, 500);
            header('Content-Type: application/json; charset=UTF-8');
            print json_encode($reply);
        }
    }
    else {
            $reply = array();
            $reply['code'] = 403;
            $reply['message'] = 'No Direct Access Allowed.';
            header($_SERVER['SERVER_PROTOCOL'] . ' 403 Forbidden', true, 403);
            header('Content-Type: application/json; charset=UTF-8');
            print json_encode($reply);
    }
}
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fkvaft9z

fkvaft9z6#

如果使用 AJAX ，...您不能使用form_validation库，因此您可以在客户端使用jquery进行验证...在服务器端应使用if语句检查提交的数据

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