click "Add Element" button
Php Form BuilderPhp Form Builder<?php
use phpformbuilder\Form;
use phpformbuilder\Validator\Validator;
/* =============================================
Start session and include the autoloader
============================================= */
session_start();
include_once rtrim($_SERVER['DOCUMENT_ROOT'], DIRECTORY_SEPARATOR) . '/phpformbuilder/autoload.php';
/* =============================================
Validation if posted
============================================= */
if ($_SERVER["REQUEST_METHOD"] == "POST" && Form::testToken('dynamic-fields-form-1') === true) {
$validator = new Validator($_POST);
$required = array();
// create validator & auto-validate required fields
$validator = Form::validate('dynamic-fields-form-1');
// additional validation
$validator->email()->validate('user-email');
// check for errors
if ($validator->hasErrors()) {
$_SESSION['errors']['dynamic-fields-form-1'] = $validator->getAllErrors();
} else {
$emailConfig = array(
'sender_email' => 'contact@phpformbuilder.pro',
'sender_name' => 'Php Form Builder',
'recipient_email' => addslashes($_POST['user-email']),
'subject' => 'Php Form Builder - Dynamic fields Form 1',
'filter_values' => 'dynamic-fields-form-1'
);
$sentMessage = Form::sendMail($emailConfig);
Form::clear('dynamic-fields-form-1');
}
}
// hidden field value to count posted jobs
if (!isset($_SESSION['dynamic-fields-form-1']['job-count'])) {
$_SESSION['dynamic-fields-form-1']['job-count'] = 1;
}
/* ==================================================
The Form
================================================== */
$form = new Form('dynamic-fields-form-1', 'horizontal', 'novalidate', 'uikit');
$form->setMode('development');
$form->setCols(2, 10, 'md');
$form->addInput('email', 'user-email', '', 'Your email', 'placeholder=Email, required');
$form->setCols(2, 4, 'md');
$form->groupElements('job-1', 'person-1');
$form->addOption('job-1', 'Content writer', 'Content writer');
$form->addOption('job-1', 'Tech Support / Technical Leader', 'Tech Support / Technical Leader');
$form->addOption('job-1', 'Office Assistant', 'Office Assistant');
$form->addOption('job-1', 'Secretary', 'Secretary');
$form->addOption('job-1', 'Team Leader', 'Team Leader');
$form->addOption('job-1', 'Data Analyst', 'Data Analyst');
$form->addOption('job-1', 'Safety Officer', 'Safety Officer');
$form->addOption('job-1', 'Delivery Boy', 'Delivery Boy');
$form->addOption('job-1', 'Admin Assistant', 'Admin Assistant');
$form->addSelect('job-1', 'Job 1', 'data-slimselect=true, class=job, title=Select a Job ..., required');
$form->addOption('person-1', 'Adam Bryant', 'Adam Bryant');
$form->addOption('person-1', 'Lillian Riley', 'Lillian Riley');
$form->addOption('person-1', 'Paula Day', 'Paula Day');
$form->addOption('person-1', 'Kelly Stephens', 'Kelly Stephens');
$form->addOption('person-1', 'Russell Hawkins', 'Russell Hawkins');
$form->addOption('person-1', 'Carl Watson', 'Carl Watson');
$form->addOption('person-1', 'Judith White', 'Judith White');
$form->addOption('person-1', 'Tina Cook', 'Tina Cook');
$form->addSelect('person-1', 'Person 1', 'data-slimselect=true, class=person, title=Select a Person ..., required');
$form->addHtml('<div id="ajax-elements-container" class="uk-margin-top"></div>');
// hidden field to count posted jobs
$form->addInput('hidden', 'job-count', '');
// buttons add/remove
$form->setCols(0, 12);
$options = array(
'btnGroupClass' => 'uk-flex uk-flex-right uk-margin-top'
);
$form->setOptions($options);
$form->addBtn('button', 'remove-btn', 0, 'Remove Element', 'class=uk-button uk-button-default remove-element-button, style=visibility:hidden, data-ladda-button=true, data-style=zoom-in', 'add-remove-group');
$form->addBtn('button', 'add-element', 1, 'Add Element', 'class=uk-button uk-button-primary uk-margin-left add-element-button, data-ladda-button=true', 'add-remove-group');
$form->printBtnGroup('add-remove-group');
// cancel/submit
$options = array(
'btnGroupClass' => 'uk-button-group uk-margin-top'
);
$form->setOptions($options);
$form->centerContent();
$form->addBtn('button', 'cancel', 0, 'Cancel', 'class=uk-button uk-button-default', 'btn-group');
$form->addBtn('submit', 'submit-btn', 1, 'Submit', 'class=uk-button uk-button-primary, data-ladda-button=true, data-style=zoom-in', 'btn-group');
$form->printBtnGroup('btn-group');
// Utility functions to extract the content retrieved with fetch() then run the built-in scripts
$form->addPlugin('ajax-data-loader', '#movies-form');
// Javascript validation
$form->addPlugin('formvalidation', '#dynamic-fields-form-1');
?>
<!DOCTYPE html>
<html lang="en-US">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<title>UIkit Dynamic fields Form using Ajax - How to create PHP forms easily</title>
<meta name="description" content="UIkit Form Generator - how to create a Php Form with Ajax dynamic fields using Php Form Builder">
<link rel="canonical" href="https://www.phpformbuilder.pro/templates/uikit-forms/dynamic-fields-form-1.php" />
<!-- UIkit CSS -->
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/uikit@3.9.4/dist/css/uikit.min.css" />
<!-- Font awesome icons -->
<link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.15.4/css/solid.css" integrity="sha384-Tv5i09RULyHKMwX0E8wJUqSOaXlyu3SQxORObAI08iUwIalMmN5L6AvlPX2LMoSE" crossorigin="anonymous">
<link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.15.4/css/fontawesome.css" integrity="sha384-jLKHWM3JRmfMU0A5x5AkjWkw/EYfGUAGagvnfryNV3F9VqM98XiIH7VBGVoxVSc7" crossorigin="anonymous">
<?php $form->printIncludes('css'); ?>
</head>
<body>
<h1 class="uk-text-center">Php Form Builder - Form with Ajax Dynamic fields<br><small>click "Add Element" button</small></h1>
<div class="uk-container" style="min-width:70vw;">
<?php
if (isset($sentMessage)) {
echo $sentMessage;
}
$form->render();
?>
</div>
<!-- UIkit JavaScript -->
<script src="https://cdn.jsdelivr.net/npm/uikit@3.9.4/dist/js/uikit.min.js"></script>
<?php
$form->printIncludes('js');
$form->printJsCode();
?>
<script>
var addElement = function() {
// fetch the new elements
let data = {
'job-index': parseInt(document.querySelector('input[name="job-count"]').value) + 1
};
fetch('dynamic-fields-form-1/ajax-elements.php', {
method: 'post',
body: new URLSearchParams(data).toString(),
headers: {
'Content-type': 'application/x-www-form-urlencoded; charset=utf-8'
},
cache: 'no-store',
credentials: 'include'
}).then(function(response) {
return response.text()
}).then(function(data) {
loadData(data, '#ajax-elements-container', true).then(() => {
setTimeout(() => {
Ladda.stopAll();
// increment job-count
var newIndex = parseInt(document.querySelector('input[name="job-count"]').value) + 1;
document.querySelector('input[name="job-count"]').value = newIndex;
// enable validator for the new fields
var form = forms['dynamic-fields-form-1'];
form.fv.addField(
'job-' + newIndex, {
validators: {
notEmpty: {}
}
}
);
form.fv.addField(
'person-' + newIndex, {
validators: {
notEmpty: {}
}
}
);
// trigger each element on page load
if (newIndex < <?php echo $_SESSION['dynamic-fields-form-1']['job-count']; ?>) {
addElement();
}
// show remove button if more than 1 job selector
if (parseInt(document.querySelectorAll('select.job').length) > 1) {
document.querySelector('.remove-element-button').style.visibility = 'visible';
}
}, 200);
});
}).catch(function(error) {
console.log(error);
});
};
document.addEventListener('DOMContentLoaded', function(event) {
document.querySelector('.add-element-button').addEventListener('click', addElement);
document.querySelector('.remove-element-button').addEventListener('click', function() {
let nodes = document.querySelectorAll('#ajax-elements-container .uk-grid');
let last = nodes[nodes.length - 1];
last.parentNode.removeChild(last);
// decrement job-count
document.querySelector('input[name="job-count"]').value = parseInt(document.querySelector('input[name="job-count"]').value) - 1;
// hide remove button if only 1 job selector
if (parseInt(document.querySelectorAll('select.job').length) < 2) {
document.querySelector('.remove-element-button').style.visibility = 'hidden';
}
// Ajax call to unset removed fields from form required fields
let data = {
'job-index': parseInt(document.querySelector('input[name="job-count"]').value) + 1
};
fetch('dynamic-fields-form-1/unset-ajax-elements.php', {
method: 'post',
body: new URLSearchParams(data).toString(),
headers: {
'Content-type': 'application/x-www-form-urlencoded; charset=utf-8'
},
cache: 'no-store',
credentials: 'include'
}).then(function(response) {
return response.text()
}).then(function(data) {
Ladda.stopAll();
// remove validator for the removed fields
let newIndex = parseInt(document.querySelector('input[name="job-count"]').value) + 1;
var form = forms['dynamic-fields-form-1'];
form.fv.removeField('job-' + newIndex);
form.fv.removeField('person-' + newIndex);
}).catch(function(error) {
console.log(error);
});
});
<?php if ($_SESSION['dynamic-fields-form-1']['job-count'] > 1) { ?>
document.querySelector('input[name="job-count"]').value = 1;
addElement();
<?php } ?>
});
</script>
</body>
</html>