使用Ajax，PHP，MYSQL更新表单 [英] Update form using Ajax, PHP, MYSQL

问题描述

我找到了一个自动提交表单数据的教程，但是我要做的就是添加一个提交按钮以将数据传递给ajax.

I found a tutorial that auto submits the form data but all I want to do is add a submit button to pass the data to ajax.

我的目标是拥有一个包含多个输入的表单，当用户单击提交"按钮时，它将通过ajax发送并更新页面，而无需重新加载页面.另外，另一个关键是将所有输入发布到数组中的方式，以便在运行更新脚本时，输入字段中的名称属性与数据库中的列匹配.

My goal is to have a form with multiple inputs and when the user clicks the submit button it sends it through ajax and updates the page without reloading the page. Also, another key piece is the way it post all the inputs into an array so that when the update script is ran the name attributes from the input fields match the columns in the database.

我想我接近了.我已经搜索过，但没有找到确切的解决方案.预先感谢.

I think I'm close. I've searched and haven't found my exact solution. Thanks in advance.

<script type="text/javascript" src="/js/update.js"></script>

<form method="POST" action="#" id="myform">

    <!-- start id-form -->
    <table border="0" cellpadding="0" cellspacing="0"  id="id-form">
    <tr>
        <th valign="top">Business Name:</th>
        <td><input type="text" name="company_name" class="inp-form" /></td>
        <td></td>
    </tr>
    <tr>
        <th valign="top">Address 1:</th>
        <td><input type="text" name="address_1" class="inp-form" /></td>
        <td></td>
    </tr>
    <tr>
        <th valign="top">Address 2:</th>
        <td><input type="text" name="address_2" class="inp-form" /></td>
        <td></td>
    </tr>



<tr>
    <th>&nbsp;</th>
    <td valign="top">
            <input id="where" type="hidden" name="customer_id" value="1" />
            <button id="myBtn">Save</button>

<div id="alert">    
    </td>
    <td></td>
</tr>
</table>
<!-- end id-form  -->
</form>

update.js

update.js

var myBtn = document.getElementById('myBtn'); 
myBtn.addEventListener('click', function(event) {

updateform('form1'); }); 

function updateform(id){
        var data = $('#'+id).serialize();
       // alert(data);
         $.ajax({
            type: 'POST',
            url: "/ajax/update_company_info.php",
            data: data,
             success: function(data) {
                 $('#id').html(data);


                 $('#alert').text('Updated');
                 $('#alert').fadeOut().fadeIn();

              },
              error: function(data) { // if error occured
                    alert("Error occured, please try again");
                },
                        }); }

update_customer_info.php

update_customer_info.php

<?php

include($_SERVER['DOCUMENT_ROOT'] . '/load.php');

// FORM: Variables were posted
if (count($_POST))
{
$data=unserialize($_POST['data']);
// Prepare form variables for database
foreach($data as $column => $value)
    ${$column} = clean($value);

// Perform MySQL UPDATE
$result = mysql_query("UPDATE customers SET ".$column."='".$value."'
    WHERE ".$w_col."='".$w_val."'")
    or die ('Error: Unable to update.');
}


?>

推荐答案

最终搞清楚了.谢谢大家的帮助.

Ended up figuring it out. Thanks for everyones help.

<p id="alert"></p>    
<form id="form" method="post" action="/ajax/update_company_info.php">

    <!-- start id-form -->
    <table border="0" cellpadding="0" cellspacing="0"  id="id-form">
    <tr>
        <th valign="top">Business Name:</th>
        <td><input type="text" name="company_name" class="inp-form" /></td>
        <td></td>
    </tr>
    <tr>
        <th valign="top">Address 1:</th>
        <td><input type="text" name="address_1" class="inp-form" /></td>
        <td></td>
    </tr>
    <tr>
        <th valign="top">Address 2:</th>
        <td><input type="text" name="address_2" class="inp-form" /></td>
        <td></td>
    </tr>



<tr>
    <th>&nbsp;</th>
    <td valign="top">
            <input id="where" type="hidden" name="customer_id" value="1" />
            <input type="submit" value="Save" id="submit">

    </td>
    <td></td>
</tr>
</table>
<!-- end id-form  -->
</form>

update.js

update.js

$(document).ready(function() {

$('form').submit(function(evt) {
  evt.preventDefault();

   $.each(this, function() {
            // VARIABLES: Input-specific
            var input = $(this);
            var value = input.val();
            var column = input.attr('name');

            // VARIABLES: Form-specific
            var form = input.parents('form');
            //var method = form.attr('method');
            //var action = form.attr('action');

            // VARIABLES: Where to update in database
            var where_val = form.find('#where').val();
            var where_col = form.find('#where').attr('name');

  $.ajax({
      url: "/ajax/update_company_info.php",
      data: {
                        val: value,
                        col: column,
                        w_col: where_col,
                        w_val: where_val
      },
      type: "POST",
      success: function(data) {         

      $('#alert').html("<p>Sent Successfully!</p>");

                        }

  }); // end post
  });// end each input value
}); // end submit
}); // end ready

update_customer_info.php

update_customer_info.php

    <?php

include($_SERVER['DOCUMENT_ROOT'] . '/load.php');

function clean($value)
{
    return mysql_real_escape_string($value);
}
// FORM: Variables were posted
if (count($_POST))
{

    // Prepare form variables for database
    foreach($_POST as $column => $value)
        ${$column} = clean($value);

    // Perform MySQL UPDATE
    $result = mysql_query("UPDATE customers SET ".$col."='".$val."'
        WHERE ".$w_col."='".$w_val."'")
        or die ('Error: Unable to update.');
}
?>

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