Develop Reference

How can I create an infinite scroll (lazy loading) grouped per day and showing date?

Situation
I'm creating a custom Wordpress website where I want to show the most recent articles grouped by day and have it scroll infinitely when you've reached the bottom of your screen.
Problem
I don't know how to continue with the date you were on without breaking the layout.
I've seen many code that involve having infinite scroll, but none of them really worked for me since it also needs to match the design.
Here is the design:
The image pretty much explains what I need to create and so I've written the following code:
<div class="recent">
<?php
$args = array(
'posts_per_page' => -1,
'orderby' => 'date'
);
$myQuery = new WP_Query($args);
$date = '';
$postCount = 0;
$newDay = false;
if ( $myQuery->have_posts() ) : while ( $myQuery->have_posts() ) : $myQuery->the_post();
$postCount++;
if ( $date != get_the_date() ) {
if ( $postCount != 1 ) {
$newDay = false;
if (!$newDay) {
?></div><?php
}
?>
</div>
<?php
}
?>
<div class="recent__articles">
<?php
$newDay = true;
$date = get_the_date();
?>
<div class="recent__header">
<img class="header__icon" src="<?php echo get_home_url() ?>/wp-content/themes/insane/assets/images/time.svg" alt="time-icon">
<?php echo $date; ?>
</div>
<?php
if ($newDay) {
?>
<div class="articles__wrapper"><?php
}
}
?>
<div class="recent__article">
<a href="<?php the_permalink(); ?>" title="<?php the_title_attribute(); ?>">
<figure class="article__image">
<?php if ( has_post_thumbnail() ) :
the_post_thumbnail();
else : ?>
<img src="<?php echo get_home_url() ?>/wp-content/themes/insane/assets/images/article-placeholder.png" alt="image-placeholder">
<?php endif ?>
</figure>
<div class="article__meta">
<span class="article__cat">
<?php
foreach((get_the_category()) as $category){
echo $category->name;
}
?>
</span>
<h2 class="article__title"><?php echo get_the_title() ?></h2>
<div class="article__date">
<?php echo esc_html( time_difference( get_the_time('U'), current_time('timestamp') ) ); ?>
</div>
</div>
</a>
</div>
<?php
endwhile; endif;
wp_reset_postdata();
?>
</div>
Top part where I check the date and increment the postCount is so I can group the articles of that day in separate div and style it accordingly.
Now all I need is to check wether I've reached the bottom and continue with where I left off.
Any help with the directions I need to be going is much appreciated.
Thank you!

I've fixed my problem in combination with the Ajax Load More plugin.
I hope this will help others facing the same problem as I did.
If anybody sees improvement in my code, I'd much appreciate it.
Tested on: MacOS - Chrome/Safari/Firefox & iOS - Chrome/Safari
I've installed the Ajax Load More plugin
They have a Repeat Templates section which is basically the while loop in php and I've added the following code (a bit stripped from what I've showed here above).
<?php $postCount++;
if ( $date != get_the_date() ) {
if ( $postCount != 1 ) {
$newDay = false;
if (!$newDay) {
?></div><?php
}
?>
</div>
<?php
}
?>
<div class="recent__articles">
<?php
$newDay = true;
$date = get_the_date();
?>
<div class="recent__header">
<img class="header__icon" src="<?php echo get_home_url() ?>/wp-content/themes/insane/assets/images/time.svg" alt="time-icon">
<?php echo $date; ?>
</div>
<?php
if ($newDay) {
?>
<div class="articles__wrapper"><?php
}
}
?>
<div class="recent__article">
<a href="<?php the_permalink(); ?>" title="<?php the_title_attribute(); ?>">
<figure class="article__image">
<?php if ( has_post_thumbnail() ) :
the_post_thumbnail();
else : ?>
<img src="<?php echo get_home_url() ?>/wp-content/themes/insane/assets/images/article-placeholder.png" alt="image-placeholder">
<?php endif ?>
</figure>
<div class="article__meta">
<span class="article__cat">
<?php
foreach((get_the_category()) as $category){
echo $category->name;
}
?>
</span>
<h2 class="article__title"><?php echo get_the_title() ?></h2>
<div class="article__date">
<?php echo esc_html( time_difference( get_the_time('U'), current_time('timestamp') ) ); ?>
</div>
</div>
</a>
</div>
I've a .php file that I load in somewhere els that looks like this:
<div class="recent">
<?php
$date = '';
$postCount = 0;
$newDay = false;
echo do_shortcode("[ajax_load_more post_type='post' posts_per_page='2' scroll_distance='0']");
?>
</div>
Now for the last part I've written the following in jQuery:
// Ajax load more fix
function ajaxShowMore() {
var oldXHR = window.XMLHttpRequest;
function newXHR() {
var realXHR = new oldXHR();
realXHR.addEventListener("readystatechange", function() {
if (realXHR.readyState === 4) { // When the Ajax call is finished new content is loaded
var oldRecentHeaders = $('.recent__header'); // Store all previous recent headers in variable
setTimeout(function() { // Set a timeout, since it goes a bit to fast to store the data
var newRecentHeaders = $('.recent__header'); // Store all the headers in a variable
newRecentHeaders.splice(0, oldRecentHeaders.length); // Splice it, so you only get the new added headers
if (newRecentHeaders.first().text() === oldRecentHeaders.last().text()) { // Check if the first of new header date is the same as the last of the old header date
var newArticles = newRecentHeaders.first().parent().find('.articles__wrapper').children(); // Store all the articles
newRecentHeaders.first().parent().remove(); // Remove the first new added articles
oldRecentHeaders.last().parent().find('.articles__wrapper').append(newArticles); // Add them here
}
}, 10);
}
}, false);
return realXHR;
}
window.XMLHttpRequest = newXHR;
}
So for me this specific solution works, based on the classes and structure of my project I've set.
I hope this helps

javascript - don't add class for specific css class

I'm working with a template in Wordpress that someone else set up and I need to fix something.
There is a javascript function that adds a class to every css class that's called object-fit - the added class is called bg--image. This was to fix an error showing up in IE11 , where all the images where messed up.
The problem now is that there's a page where this function shouldn't apply even though the css class is also called object-fit.
I'm a little confused on how to work here. As I don't want to mess up the whole theme and my coding options are quite limited, it just makes a knot in my brain.
Is there any possibility I can add a javascript function to not apply the IE 11 function on this one specific class? the difference is that the one img where it shouldn't apply is a span, the other one is not.
Any ideas?
try {
if (ie_ver() == 11) {
var $img = $('.banner--small').find('img');
$('.banner--small').attr('style', 'background-image:url(' + $img.attr('src') + ')');
$('.banner--small').addClass('bg--image');
$img.addClass('hidden');
var $img2 = $('.object-fit').find('img');
$('.object-fit').attr('style', 'background-image:url(' + $img2.attr('src') + ')');
$('.object-fit').addClass('bg--image');
$img2.addClass('hidden');
$('.slick__inner').each(function() {
var $img3 = $(this).find('img');
$(this).attr('style', 'background-image:url(' + $img3.attr('src') + ')');
$(this).addClass('bg--image');
$img3.attr('style', 'display:none');
});
<div class="article--text">
<div class="container container--tiny spacing--huge">
<?php the_content(); ?>
</div>
<div class="container margin-bottom--huge">
<?php if (get_field('direktionen')) { ?>
<div class="flex flex--wrap flexgrid--gutter flexgrid--normal">
<?php foreach (get_field('direktionen') as $key => $child) { ?>
<div class="flex__item one-third lg-one-half xs-one-whole">
<a href="<?php echo $child['link']; ?>" class="link--direction text--center margin-bottom--medium" target="_blank">
<span class="object-fit"><img src="<?php echo $child['photo']['sizes']['medium']; ?>"
srcset="<?php echo $child['photo']['sizes']['mobile']; ?> 2x,<?php echo $child['photo']['sizes']['medium']; ?> 1x"
alt="<?php echo $child['name']; ?>" /></span>
<h3>
<?php echo $child['name']; ?>
</h3>
<p>
<?php echo $child['adresse']; ?>
</p>
</a>
</div>
<?php } ?>
</div>
<?php } else if ($children) { ?>
<div class="flex flex--wrap flexgrid--gutter flexgrid--normal">
<?php foreach ($children as $key => $child) { ?>
<div class="flex__item one-third lg-one-half xs-one-whole">
<a href="<?php echo get_permalink($child->ID); ?>" class="link--direction text--center margin-bottom--medium">
<span class="object-fit"><img src="<?php echo get_the_post_thumbnail_url($child->ID, 'medium'); ?>"
srcset="<?php echo get_the_post_thumbnail_url($child->ID, 'mobile'); ?> 2x,<?php echo get_the_post_thumbnail_url($child->ID, 'medium'); ?> 1x"
alt="<?php echo $child->post_title; ?>" /></span>
<h3>
<?php echo $child->post_title; ?>
</h3>
<p>
<?php echo get_field('adresse', $child->ID); ?>
</p>
</a>
</div>
<?php } ?>
</div>
<?php } ?>
</div>
</div>

Since this is a WordPress template, you have a couple of solutions.
Solution 1 - HTML & jQuery modification
If you can add an additional class to only this page's HTML, then applying the following updates to this page template should allow you to avoid having the .bg--image class added to just this page:
HTML
<span class="object-fit avoid-change">
jQuery
$('.object-fit').not( '.avoid-change' ).addClass('bg--image');
More info on jQuery's .not() method:
https://api.jquery.com/not/
Solution 2 - WordPress Conditional
Another option is to use a WordPress conditional to avoid running the entire script on this page.
You could use the following to prevent the script from loading in this template:
<?php if(! is_page_template( 'your-template-name.php' )){ ?>
// place your script or wp_enqueue_script() code here
<?php } ?>
You could also target an exact page by its page ID. In this example, your page ID would be 7.
<?php if(! is_page( '7' )){ ?>
// place your script or wp_enqueue_script() code here
<?php } ?>
More info on WordPress conditionals:
https://codex.wordpress.org/Conditional_Tags

ACF Repeater Field - display first 3 fields and the rest in toggle

I am helping a friend coding a movie website with wordpress. He wants to show the filmcast (using Advanced Custom Fields, Repeater Field) on each movie page as follows:
The first three actors (with name as permalink, role and pic) should be displayed openly in a row of three and the rest of them inside a toggle, which can be opend with a “see more” link and closed with a “see less” link.
This is the example, he showed me to understand what he whishes it should look like: https://www.moviepilot.de/movies/the-justice-league
I am working on it since days and have the code ALMOST working. But coding, especially Java Script and ACF are pretty new to me, so I can’t find a solution for two problems:
I have ALL actors inside the toggle now (how to get the first three actors outside the toggle?)
I have only a static button which opens and closes the toggle, but not a “see more” link to open the toggle and a “see less” to close it (as on the example movie page).
I tried every code snippet I found with google, here and on the ACF website. But it seems I am totaly lost. Every help will be very much appreciated!!!
Here is the code I have so far:
<style>
#filmcast-toggle {
width: 100%;
padding: 80px 0;
display: none;
}
</style>
<button onClick="myFunction()">Show/Hide Cast</button>
<div id="filmcast-toggle">
<div class="filmcast-element">
//Page-Element ACF Filmcast
<?php $i = 0; ?>
<?php
// check if the repeater field has rows of data
if( have_rows('filmcast') ):
// loop through the rows of data
while ( have_rows('filmcast') ) : the_row(); ?>
<?php if($i == 0) { echo '<div class="filmcast-row">'; } ?>
<div class="filmcast-half">
<div class="filmcast-person">
<?php $posts = get_sub_field('filmcast-person');
if( $posts ): ?>
<?php foreach( $posts as $post): setup_postdata($post); ?>
<div class="filmcast-image">
<?php the_post_thumbnail ( array (120, 140)); ?>
</div>
<div class="filmcast-name">
<a href="<?php echo get_permalink($post->ID); ?>">
<?php echo get_the_title($post->ID); ?></a>
</div>
<div class="filmcast-rolle">
<?php the_sub_field('filmcast-rolle'); ?>
</div>
<?php endforeach; wp_reset_postdata (); ?>
<?php endif;?>
</div>
</div>
<?php $i++; if($i == 3) { $i = 0; echo '</div>'; } ?>
<?php endwhile; ?>
<?php if($i > 0) { echo '</div>'; } ?>
<?php else :
// no rows found
endif; ?> </div>
</div>
<script>
function myFunction() {
var x = document.getElementById('filmcast-toggle');
if (x.style.display === 'none'|| x.style.display == '') {
x.style.display = 'block';
} else {
x.style.display = 'none';
}
}
</script>

Match incremented class with incremented ids from different loops [jQuery / Wordpress]

After hours of research and try and errors I start my first question here.
If it can be done with wordpress syntax even better. Otherwise I think I'm near to the solution.
I want a custom gallery on a wordpress template page but with the post image from certain categories with the content from it. So far so good.
In my designerin.php template I give every images a class img-x.
class="img-<?php echo $img_counter; ?>
And the content get the id img-x
id="img-<?php echo $post_counter; ?>
The counter is just an increment. So image 1 has class img-1, image 2 img-2 and so on.
Now I want the related content of that image created in the wordpress editor showing up when you are clicking on this specific image.
Say you click on image 5 and want the content from image 5.
I'm stucked on the step where I say (in jQuery), that display the content
if .img-x == #img-x {
display the_content()
}
Enough said - here is my jQuery code:
$(".large-img-wrapper").hide();
$('.gallery li').on('click', function(e) {
e.preventDefault();
var largeImgLink = $(this).find('a').attr('href');
$(".large-img-wrapper").first().fadeIn();
var imgContent = $('#img-5').html();
$('#large-img').remove();
$('#append-id').remove();
$(".large-img").append('<img id="large-img" src="' + largeImgLink + '">').fadeIn();
$(".large-img").append('<div id="append-id">' + imgContent + '</div>').fadeIn();
$(".large-img-container .img-title").remove();
});
The var imgContent was just a test. Every image shows up the content from image 5 at the moment.
My template page code:
<div class="row content full-width">
<div class="cats row">
Alle Kategorien
<?php query_posts( 'category_name=designerin&posts_per_page=-1'); if (have_posts()) : while (have_posts()) : the_post();
$categories = get_the_category();
$separator = ' ';
$output = '';
if($categories){
foreach($categories as $category) {
$output .= $category->cat_name;
}
}
$cat_name = get_category(get_query_var('cat'))->name;
?>
<?php echo trim($output); ?>
<?php endwhile; ?>
<?php endif; ?>
<?php wp_reset_query(); ?>
</div>
<ul class="row small-block-grid-3 medium-block-grid-5 large-block-grid-8 gallery">
<?php $img_counter = 0; ?>
<?php query_posts( 'category_name=designerin&posts_per_page=-1'); if (have_posts()) : while (have_posts()) : the_post();
$img_counter++;
$thumb_id = get_post_thumbnail_id();
$thumb_url_array = wp_get_attachment_image_src($thumb_id, 'thumbnail', true);
$large_url_array = wp_get_attachment_image_src($thumb_id, 'large', true);
$thumb_url = $thumb_url_array[0];
$large_url = $large_url_array[0];
$categories = get_the_category();
$separator = ' ';
$output = '';
if($categories){
foreach($categories as $category) {
$output .= $category->cat_name;
}
}
?>
<li>
**<img src="<?php echo $thumb_url; ?>" alt="<?php echo the_title(); ?>">**
</li>
<?php endwhile; ?>
<?php endif; ?>
<?php wp_reset_query(); ?>
</ul>
<?php $post_counter = 0; ?>
<?php query_posts( 'category_name=designerin&posts_per_page=-1'); if (have_posts()) : while (have_posts()) : the_post();
$post_counter++;
?>
**<ul class="large-img-wrapper">
<li>
<div class="large-img-container">
<div class="large-img"></div>
<div class="img-content" id="img-<?php echo $post_counter; ?>">
<div class="img-title">
<?php echo the_title(); ?>
</div>
<div class="img-text">
<?php echo the_content(); ?>
</div>
</div>
</div>
</li>
</ul>**
<?php endwhile; ?>
<?php endif; ?>
<?php wp_reset_query(); ?>
</div>
The first query is for filtering the categories by slug.
My last attempt feels so near..
var inc = '5';
var objClass = $(this).find("a").hasClass( "img-" + inc );
console.log(objClass);
When I'm clicking on the 5th image I get "true". But how can I get the X (inc) related to my template php code?
Sorry for my english and possible bad code

If i'm understanding correctly this might help
$('.gallery li').on('click', function(e) {
e.preventDefault();
var className = $(this).find('a').attr('class');
var imgContent = $('#'+className).html();
});

Get Wordpress Post ID in JQuery file

The following Wordpress loop creates several textblocks on a page:
<?php while ( $query->have_posts() ) : $query->the_post();?>
<div class="col-md-<?php echo $column_width_input = get_post_meta( get_the_ID(), 'column_element_grid_class_meta_box', true ); ?>">
<div id="post-<?php the_ID(); ?>" class="textblock dicon" data-animation="<?php echo $animation_type_input = get_post_meta( get_the_ID(), 'animation_element_grid_class_meta_box', true ); ?>" data-delay="1">
<div class="dicon discipline-icon"><i class="fa fa-comment-o fa-2x"></i></div>
<h4 class="text-center"><?php echo the_title(); ?></h4>
<p class="text-center"><?php echo the_content(); ?></p>
</div>
<!-- END #post -->
</div>
<?php endwhile; ?>
I am trying to write a script that will animate a particular text block .textblock with a particular animation (each textblock has a different animation). I figured that I'll use the post ID to target a textblock (id="post-") but I'm not sure how to use the_ID(); in the JS file. I have seen the rel attribute used to do this but is is not currently working for me. Here is what I have so far which only applies the same animation to all the text boxes:
var topOfOthDiv = $(".textblock").offset().top;
$(window).scroll(function() {
if($(window).scrollTop() > topOfOthDiv - 400) { //scrolled past the other div?
$(".textblock").addClass('animated ' + $(".textblock").data('animation'));
}
});

You could have a hidden input, and get it through js like this:
HTML:
<input type="hidden" id="post_id" value="<?php the_ID() ?>">
Javascript:
post_id = $("#post_id").val();