Develop Reference

why ajax duplicate content

Hello I am new here and working on a project that requires this option of "Viewing content in DIV .posts_area, from database using AJAX",
I had a problem that the content I get in .posts_area sometimes duplicate itself.
Can anyone help me with the solution and I would also be happy for more detailed explanation about the subject.
// AJAX in
<script type="text/javascript">
$(document).ready(function() {
var flag = 0;
$.ajax({
type: 'GET',
url: 'getData.php',
data: {
'offset': 0,
'limit': 6
},
async: true,
success: function(data) {
$('.posts_area').append(data);
flag += 3;
}
});
$(window).scroll(function() {
if ($(window).scrollTop() >= $(document).height() - $(window).height() - 10) {
$.ajax({
type: 'GET',
url: 'getData.php',
data: {
'offset': flag,
'limit': 5
},
success: function(data) {
$('.posts_area').append(data);
flag += 3;
}
});
}
});
});
</script>
//getData.php
<?php
include ('config/config.php');
include 'includes/classes/user.php';
include 'includes/classes/post.php';
if(isset($_GET['offset']) && isset($_GET['limit'])){
$limit = $_GET['limit'];
$offset = $_GET['offset'];
$data = mysqli_query($con,"SELECT * FROM posts WHERE deleted='no' ORDER by id DESC LIMIT {$limit} OFFSET {$offset} ");
if(mysqli_num_rows($data ) > 0) {
while($row = mysqli_fetch_array($data) ){
$id = $row['id'];
$comments_check = mysqli_query($con, "SELECT * FROM comments WHERE post_id='$id'");
$comments_check_num = mysqli_num_rows($comments_check);
?>
<script>
function myFunction<?php echo $id; ?>() {
var x = document.getElementById("toggleComment<?php echo $id; ?>");
if (x.style.display === "block") {
x.style.display = "none";
} else {
x.style.display = "block";
}
}
</script>
<?php
$added_by_user = $row['added_by_user'];
$post_profile_pic = $row['post_profile_pic'];
$added_by = $row['added_by'];
$body = $row['body'];
$date_time = $row['date_added'];
$user_session = $_SESSION['user'];
if($user_session == $added_by_user)
$delete_button = "<form action = 'delete_post.php?id=$id' method='POST' id = 'delete_post_id_form'>
<input type ='submit' class = 'delete_post_class_input' id = 'delete_post_id_input' value = 'Delete'></input>
</form>";
else
$delete_button = "";
// if($user_session == $added_by_user)
// $update_button = "<form action = 'update_post.php?post_id=$id' method='POST'>
// <input type ='submit' class = 'update_post_class' id = 'update_post_id' value = 'Update'></input>
// </form>";
// else
// $update_button = "";
$str .= "<div class='status_post' >
<div class='on_post_profile_pic_class' id = 'on_post_profile_pic_id'>
<a href='$added_by_user' class='posted_by_on_img'><img src='$post_profile_pic' width='50' id = 'on_post_profile_img_id'></img></a>
</div>
<div class='posted_by1' id='added_by_on_post' style='color:#ACACAC;'>
<a href='$added_by_user' class='posted_by'> $added_by </a>
</div>
<img src='assets/images/icons/more_info_button_black_down.png' onClick='show_hide()'alt='more_info_on_post_button_black_down_button_alt' class='more_info_on_post_button_black_down_btn' id ='more_info_on_post_button_black_down_btn_id' name ='more_info_name'></img>
<img src='assets/images/icons/more_info_button_black_up.png' alt='more_info_on_post_button_black_up_button_alt' class='more_info_on_post_button_black_up_btn' id ='more_info_on_post_button_black_up_btn_id'></img>
<div class = 'date_added_on_post_class' id = 'date_added_on_post_id'>$date_time</div>
<div class = 'update_post_class' id = 'update_post_id'>$update_button</div>
<div class = 'delete_post_class_div' id = 'delete_post_id'>$delete_button</div>
<div id='post_body' dir=auto>
$body
</div>
</div>
</div>
<div class='span_class' id='span_id' onclick='myFunction$id()' >Comments($comments_check_num) </div>
<hr>
<div class='post_comment' id='toggleComment$id' >
<iframe src='comment_frame.php?post_id=$id' class = 'comment_iframe_class' id='comment_iframe' frameborder='0'></iframe>
</div>
<hr class ='hr'>";
}
echo $str;
}
}
?>

$('.posts_area').html(data);
Use this instead of append()

Data from PHP to JS - Google calendar + CanvasJS

I want to get data from Google calendar to make Chart how much you are at work.
My problem is that i cant load data from PHP to JS -> $DataJSON cant be load by JS...Final script should count how many hours you spend at meetings etc.. There is code
<?php
require_once 'google-api-php-client/vendor/autoload.php';
session_start();
$client = new Google_Client();
$client->setAuthConfigFile('client_secret.json');
$client->addScope("https://www.googleapis.com/auth/calendar");
if (isset($_SESSION['access_token']) && $_SESSION['access_token']) {
$client->setAccessToken($_SESSION['access_token']);
$service = new Google_Service_Calendar($client);
$calendarList = $service->calendarList->listCalendarList();
?>
<form action="" method="POST" enctype="multipart/form-data">
<?php
while(true) {
foreach ($calendarList->getItems() as $calendarListEntry) {
echo '<input type="checkbox" value='.$calendarListEntry->id.' name="zasedacky[]">' .$calendarListEntry->getSummary()."</br>";
}
$pageToken = $calendarList->getNextPageToken();
if ($pageToken) {
$optParams = array('pageToken' => $pageToken);
$calendarList = $service->calendarList->listCalendarList($optParams);
} else {
break;
}
}
?>
<select name="type">
<option value="column">Column</option>
<option value="bar">Bar</option>
<option value="area">Area</option>
</select>
<input type="submit" name="submit">
</form>
<?php
if(isset($_POST['submit'])){
$type = $_POST['type'];
$zst = $_POST['zasedacky'];
if(empty($zst))
{
echo("Nevybrali jste žádnou zasedací místnost.");
}
else
{
$N = count($zst);
$data_points = array();
for($i=0; $i < $N; $i++)
{
$calendar = $service->calendars->get($zst[$i]);
$calendarJSON = array("label" => $calendar->getSummary(), "y" => "11");
array_push($data_points, $calendarJSON);
}
$dataJSON = json_encode($data_points, JSON_NUMERIC_CHECK);
echo $dataJSON;
}
}
?>
<script>
$(document).ready(function () {
var dataPoints = <?=$dataJSON ?>;
for(var i = 0; i <= result.length-1; i++)
{
dataPoints.push({label: result[i].label, y: parseInt(result[i].y)});
}
var chart = new CanvasJS.Chart("chartContainer", {
data: [
{
dataPoints: dataPoints
}
]
});
chart.render();
document.write(dataPoints);
});
</script>
</body>
<?php
} else {
$redirect_uri = 'http://localhost/calendar/oauth2callback.php';
header('Location: ' . filter_var($redirect_uri, FILTER_SANITIZE_URL));
}
Thanks for your help

It seems you forgot to define the result variable. Maybe you intended to do this:
<script>
$(document).ready(function () {
var result = <?=$dataJSON ?>;
var dataPoints = [];
for(var i = 0; i <= result.length-1; i++)
{
dataPoints.push({label: result[i].label, y: parseInt(result[i].y)});
}
var chart = new CanvasJS.Chart("chartContainer", {
data: [
{
dataPoints: dataPoints
}
]
});
chart.render();
});
</script>
Hardcoded data format you provided seems to work fine. Here is the JSFiddle

How to add an array from the data attribute and id using javascript and combine them in array php?

I just want to ask if how to merge this two array from all id value and data-rate value on my list order? there is too many ul li, so i need to get them all and store it into array.
this is my code in javascript:
var h = [];
$("ul.reorder-photos-list li").each(function() { h.push($(this).attr('id').substr(9)); });
var x = [];
$("ul.reorder-photos-list li").each(function() { x.push($(this).attr('data-rate').substr(9)); });
$.ajax({
type: "POST",
url: "order_update.php",
data: {
ids: " " + h + "",
rate: " " + x + ""
},
success: function(html)
{
window.location.reload();
/*$("#reorder-helper").html( "Reorder Completed - Image reorder have been successfully completed. Please reload the page for testing the reorder." ).removeClass('light_box').addClass('notice notice_success');
$('.reorder_link').html('reorder photos');
$('.reorder_link').attr("id","");*/
}
});
and this is my html code:
<li id="image_li_<?php echo $row['id']; ?>" class="ui-sortable-handle">
<input id="rate" type="text" value="<?= $row['rate']?>" data-rate="<?php echo $row['rate']; ?>" >
and then in my order_update.php this is my code.
$idArray = explode(",",$_POST['ids']);
$rateArray = explode(",",$_POST['rate']);
$ids = array();
foreach ($idArray as $id) {
$ids[] = $id;
}
$rates = array();
foreach ($rateArray as $rate) {
$rates[] = $rate;
}
$n = 0;
$orderArray = array();
while( $n <= count($idArray) )
{
$orderArray[] = array("id" => $ids[$n], "data" => $rates[$n]);
$n++;
}
and this is my insert query from orderArray
function updateOrder($orderArray){
$count = 1;
foreach ($orderArray as $array){
$update = mysqli_query($this->connect,"UPDATE `test` SET `order` = $count, `rate`=$array[rate] WHERE id = $array[id]");
$count ++;
}
return true;
}
hope someones helps me. :)thanks in advance!

When setting up your data, you don't need to have multiple loops. You can loop through the data once:
var dataArray = [];
$("ul.reorder-photos-list li").each(function() {
var el = $(this),
input = el.children(':input'); // This gets the input decendent of the li
// When adding one item at a time to an array, array[array.length] = item is better
dataArray[dataArray.length] = {
id: el.attr('id').substr(9),
rate: input.val(),
};
});
$.ajax({
type: "POST",
url: "order_update.php",
data: { items: dataArray }, // items gives the PHP something to use as a key in the POST data
success: function(html) {...}
});
Your PHP will look like this:
// The data passed from the Ajax call is already an array
$itemsArray = $_POST['items'];
// Your function to process the array
function updateOrder($orderArray) {
foreach ($orderArray as $index => $array) {
// $index will already have a count, you need to +1 because it's 0-based
mysqli_query($this->connect, "UPDATE `test` SET `order` = " . ($index + 1) . ", `rate`=" . $array['rate'] . " WHERE id = " . $array['id']);
}
return true;
}

var rates;
$("ul.reorder-photos-list li").each(function() {
rates.id.push($(this).attr('id').substr(9));
rates.rate.push($(this).attr('data-rate').substr(9));
});
This will create your JSON object of h/x pairs.
$.ajax({
type: "POST"
, url: "order_update.php"
, data: { JSON.stringify(rates); }
, success: function(html) {
window.location.reload();
/* $("#reorder-helper").html(
* "Reorder Completed - Image reorder have been successfully completed.
* Please reload the page for testing the reorder."
* ).removeClass('light_box').addClass('notice notice_success');
* $('.reorder_link').html('reorder photos');
* $('.reorder_link').attr("id","");
*/
}
});
This should fix your call to send the correct data.
Your PHP side is going to want to have something similar to this:
if(isset($_POST['rates'])) {
$ratesString = $_POST['rates'];
$rates = json_decode($ratesString);
}
// Do other things with $hx`
Your insert query is off, too. You need to declare each value as a variable or your compiler is going to hate your PHP, too. You also have some unnecessary quotes in your query.
function updateOrder($orderArray){
$count = 1;
foreach ($orderArray as $array){
$rate = $array['rate'];
$id = $array['id'];
mysqli_query($this->connect,"UPDATE test SET order = $count, rate = '$rate' WHERE id = '$id'");
$count ++;
}
return true;
}
For your HTML, I think this is what you were going for, but not sure since it's not really explained all that well...Feel free to comment on your intentions.
<ul>
<?php foreach($orderArray as $array) : ?>
<li id="image_li_<?php echo $array['id']; ?>" class="ui-sortable-handle">
<input id="rate" type="text" value="<?php echo $array['rate']?>" data-rate="<?php echo $array['rate']; ?>" ></li>
<?php endforeach; ?>
</ul>
Hope this helps.
-C§

I got the code now. thanks for your help guys!
var h = [];
$("ul.reorder-photos-list li").each(function() { h.push($(this).attr('id').substr(9)); });
var x = [];
$("input").each(function() { x.push($(this).val()); });
$.ajax({
type: "POST",
url: "order_update.php",
data: {ids: " " + h + "",rate: " " + x + ""},
/*data: { items: dataArray },*/
success: function(html)
{
...
}
});
In Php side:
$idArray = explode(",",$_POST['ids']);
$rateArray = explode(",",$_POST['rate']);
$ids = array();
foreach ($idArray as $id) {
$ids[] = $id;
}
$rates = array();
foreach ($rateArray as $rate) {
$rates[] = $rate;
}
$n = 0;
$orderArray = array();
while( $n <= count($idArray) )
{
$orderArray[] = array("id" => $ids[$n] , "rate" => $rates[$n]);
$n++;
}
$db->updateOrder($orderArray);
function updateOrder($orderArray){
$count = 1;
foreach ($orderArray as $array){
mysqli_query($this->connect, "UPDATE `test` SET `morder` = " . $count . ", `mtoursrate`=" . $array['rate'] . " WHERE id = " . $array['id']);
$count ++;
}
return true;
}

Function not executing before .forEach

I'm having some problems showing my loading icon, before a function is executing. It seems to be showing at the same time my new elements are being appended to the DOM. I'm expecting to have many elements, so a loading icon is necessary as these new elements are being built.
A breakdown of what I want to happen
Show loading icon
Build new elements and append to DOM
Hide loading icon
Generate Dummy Elements
<div class="loader"></div>
<button>Duplicate Items</button>
<section class="grid">
<?php for ($i = 0; $i < 1000; $i++) :
$randH = rand(1, 10);
$randW = rand(1, 10);
$imgUrl = 'http://placehold.it/' . $randH . 'x' . $randW;
?>
<article class="grid__item">
<img src="<?php echo $imgUrl; ?>" height="<?php echo $randH; ?>" width="<?php echo $randW; ?>">
<p>Hello <?php echo $i; ?></p>
</article>
<?php endfor;?>
</section>
<section class="gallery></section>
Javascript Functions
let createGallery = () => {
let gridItems = document.querySelectorAll('.grid__item'),
gallery = document.querySelector('.gallery'),
gridArray = Array.prototype.slice.call(gridItems, 0);
// create new elements
gridArray.forEach((item, index) => {
let galleryItem = document.createElement('article'),
img = item.querySelector('img').attributes,
markup = {
caption: item.querySelector('p').innerHTML
},
template = `<article class="gallery__item">
<img class="gallery__item__img" src="{{src}}" height="{{height}}" width="{{width}}">
<figcaption>{{caption}}</figcaption>
</article>`;
for (let i = 0; i < img.length; i++) {
markup[img[i].nodeName] = img[i].nodeValue;
}
Object.keys(markup).forEach(function(key) {
let regEx = new RegExp('\{\{' + key + '\}\}', 'g');
template = template.replace(regEx, markup[key]);
});
galleryItem.innerHTML = template;
galleryItem.className = 'gallery__item ' + index;
gallery.appendChild(galleryItem);
})
// after all images have been added > hide loader
$('.loader').removeClass('is-active');
};
let initGallery = () => {
// show loader, before creating gallery
$('.loader').addClass('is-active');
// create new elements
createGallery();
}
let $button = document.querySelector('button');
$button.addEventListener('click', initGallery);

Magento Images switcher for custom options

I have created a custom options image switcher for Magento, script compares value from options in drop-down with all image names related to product, and finds the most similar one, you can see an example here
The problem is how to add the "selected" option image to the cart, or better to say how to apply that image instead of the default thumbnail in the cart?
anyway here is the complete code - maybe someone can even find this part useful :)
<?php
// load all images related to product
$product = $this->getProduct();
$galleryData = $product->getData('media_gallery');
$images_array = array();
foreach ($galleryData['images'] as $image) {
array_push($images_array, $image['file']);
}?>
<?php
$colour_select_id = '';
$custom_options_arr = array();
foreach ($_options as $_option) {
if ($_option->getTitle() == 'Helmet Color/Design' || $_option->getTitle() == 'Color') {
$colour_select_id = 'select_' . $_option->getId();
$values = $_option->getValues();
foreach ($values as $value) {
$current_option = ($value->getData());
$custom_options_arr[$current_option['option_type_id']] = $current_option['title'];
}
}
}
// $custom_options_arr now holds key=>value pairs of option_type_id => title
$custom_images_to_output = array();
foreach ($custom_options_arr as $key => $value) {
$best_match = $images_array[0];
for ($i = 1; $i < count($images_array); $i++) {
if (similar_text(strtoupper($images_array[$i]), strtoupper($value)) > similar_text(strtoupper($best_match), strtoupper($value))) {
$best_match = $images_array[$i];
}
}
$custom_images_to_output[$key] = $best_match;
}
$base_url = Mage::getBaseUrl('media') . 'catalog/product';
?>
<?php if ($colour_select_id) { ?>
<script type="text/javascript">
jQuery(document).ready(function() {
var opt_object = <?php echo json_encode($custom_images_to_output); ?>;
var base_path = '<?= $base_url;?>';
jQuery("#<?= $colour_select_id ?>").change(function() {
var optionValue = jQuery(this).attr('value');
if (optionValue) {
var optionValueText = jQuery.trim(jQuery('#<?= $colour_select_id ?> :selected').text());
if (opt_object.hasOwnProperty(optionValue)) {
optionValueText = opt_object[optionValue];
}
jQuery("#image").fadeOut(function() {
jQuery(this).load(function() {
jQuery(this).fadeIn(); });
jQuery(this).attr("src", base_path + optionValueText);
jQuery('#image-zoom').attr("href", base_path + optionValueText);
});
}
});
});
</script>