Blog | portalZINE NMN | Development meets Creativity

26. January 2018

Element Selections via Regular Expression with jQuery filter

Easily target images with the jQuery filter function, using a Regular Expression. With this you can easily find elements that have a matching class, like ‘featured_image’ or ‘testimonial_image’.

// build our desired collection.
// matches both $('img.featured-testimonial__image') & $('img.featured-work__image')
const matches = $('img').filter(function() {
                  return this.className.match(/__image/);
                });

// Do something to collection
$.each(matches, function(i, item) { 
  $item = $(item);
  src = $item.attr('src');
  $item.attr('src', src.replace('http://', '//'));
});

// build our desired collection.

// matches both $('img.featured-testimonial__image') & $('img.featured-work__image')

const matches = $('img').filter(function() {

return this.className.match(/__image/);

});

// Do something to collection

$.each(matches, function(i, item) {

$item = $(item);

src = $item.attr('src');

$item.attr('src', src.replace('http://', '//'));

});

Enjoy coding …

26. January 2018

Keep container ratios with pure CSS

Container

<div class='box'>
    <div class='content'>Aspect ratio of 1:1</div>
</div>

<div class='content'>Aspect ratio of 1:1</div>

</div>

CSS

.box {
    position: relative;
    width:    50%; /* desired width */
}

.box:before {
    content:     "";
    display:     block;
    padding-top: 100%; /* initial ratio of 1:1*/
}

.content {
    position: absolute;
    top:      0;
    left:     0;
    bottom:   0;
    right:    0;
}

/* Other ratios - just apply the desired class to the "box" element */
.ratio2_1:before{
    padding-top: 50%;
}
.ratio1_2:before{
    padding-top: 200%;
}
.ratio4_3:before{
    padding-top: 75%;
}
.ratio16_9:before{
    padding-top: 56.25%;
}

.box {

position: relative;

width: 50%; /* desired width */

}

.box:before {

content: "";

display: block;

padding-top: 100%; /* initial ratio of 1:1*/

}

.content {

position: absolute;

top: 0;

left: 0;

bottom: 0;

right: 0;

}

/* Other ratios - just apply the desired class to the "box" element */

.ratio2_1:before{

padding-top: 50%;

}

.ratio1_2:before{

padding-top: 200%;

}

.ratio4_3:before{

padding-top: 75%;

}

.ratio16_9:before{

padding-top: 56.25%;

}

23. January 2018

Cleaning up the WordPress Feed (Validation)

When using your main content feed to share posts via buffer or other services, it is crucial that your feed validates cleanly.

There are always things in the generated WordPress content that can break your feed validation. Here some things to cleanup or alter your delivered feed content.

CONDITIONAL TAGS

is_feed()
Check for syndication request. This tag is not typically used by users; it is used internally by WordPress and is available for Plugin Developers.

Check for feed syndication in your themes functions.php

if (is_feed()) {
    /.. tweaks go here ../
}

if (is_feed()) {

/.. tweaks go here ../

}

REMOVE IFRAMES

function rss_noiframe($content) {
        
    $content = preg_replace( '/<iframe(.*)\/iframe>/is', '', $content );

    return $content;
}

add_filter('the_excerpt_rss', 'rss_noiframe');
add_filter('the_content_feed', 'rss_noiframe');

function rss_noiframe($content) {

$content = preg_replace( '/<iframe(.*)\/iframe>/is', '', $content );

return $content;

}

add_filter('the_excerpt_rss', 'rss_noiframe');

add_filter('the_content_feed', 'rss_noiframe');

REMOVE / DISABLE COMMENTS

function rss_nocomments($content) {
    
     global $post;
      $post->comment_status="closed";
   
  
}

add_filter('the_excerpt_rss', 'rss_nocomments');
add_filter('the_content_feed', 'rss_nocomments');

function rss_nocomments($content) {

global $post;

$post->comment_status="closed";

}

add_filter('the_excerpt_rss', 'rss_nocomments');

add_filter('the_content_feed', 'rss_nocomments');

REMOVE RESPONSIVE IMAGES

The sizes attribute breaks feed validation, here how to clean it up.

function no_responsive_image_feeds() {
    add_filter( 'max_srcset_image_width', function() {
       return 1;
    } );
}

add_action('rss2_head', 'no_responsive_image_feeds' );
add_action('atom_head', 'no_responsive_image_feeds' );
add_action('rss_head', 'no_responsive_image_feeds' );

function no_responsive_image_feeds() {

add_filter( 'max_srcset_image_width', function() {

return 1;

} );

}

add_action('rss2_head', 'no_responsive_image_feeds' );

add_action('atom_head', 'no_responsive_image_feeds' );

add_action('rss_head', 'no_responsive_image_feeds' );

INCLUDE PAGES IN POST FEED

if (is_feed()) {
function feedFilter($query) {
	if ($query->is_feed) {
		$query->set('post_type','any');
		}
	return $query;
}
add_filter('pre_get_posts','feedFilter');
}

if (is_feed()) {

function feedFilter($query) {

if ($query->is_feed) {

$query->set('post_type','any');

}

return $query;

}

add_filter('pre_get_posts','feedFilter');

}

ADJUST AMOUNT OF POSTS

if (is_feed()) {

function feedFilter($query) {
	if ($query->is_feed) {
		$query->set('posts_per_page','11');
	}
 
	return $query;
}
add_filter('pre_get_posts','feedFilter');

}

if (is_feed()) {

function feedFilter($query) {

if ($query->is_feed) {

$query->set('posts_per_page','11');

}

return $query;

}

add_filter('pre_get_posts','feedFilter');

}

LIMIT BY CATEGORY

if (is_feed()) {
function feedFilter($query) {
	if ($query->is_feed) {
		$query->set('category_name', 'my-special-cat');
	}
 
	return $query;
}
add_filter('pre_get_posts','feedFilter');
}

if (is_feed()) {

function feedFilter($query) {

if ($query->is_feed) {

$query->set('category_name', 'my-special-cat');

}

return $query;

}

add_filter('pre_get_posts','feedFilter');

}

Enjoy coding …

23. January 2018

60+fps lightweight parallax for jQuery

A tiny requestAnimationFrame powered 60+fps lightweight parallax tilt effect for jQuery.

See the Pen <a href='https://codepen.io/AldoFerrari/pen/JELBwJ/'>Parallax tilt effect, Tilt.js</a> by Aldo Ferrari (<a href='https://codepen.io/AldoFerrari'>@AldoFerrari</a>) on <a href='https://codepen.io'>CodePen</a>.<br />

GitHub

21. January 2018

Villa Anna Speyer – Bed & Breakfast

Villa Anna Speyer – Classic Bed & Breakfast offering with 3 double rooms & bathroom.

Static html placeholder for first initial introduction & offer
WordPress Backend (coming soon)
Booking Backend (coming soon)
Maintenance

Villa Anna Speyer

21. January 2018

CodeCombat – programming can be as much fun as a game

CodeCombat is a multiplayer programming game for learning how to code. The ultimate goal of CodeCombat is to bring more users into the field of computer programming by making the logic and syntax more accessible and enjoyable to learn. The end game is to educate a whole new generation of computer programmers that started their journey by slaying ogres and defending their castles from oncoming enemy hordes.

CodeCombat teaches Python, JavaScript, and other languages directly in the browser.

CodeCombat itself can be found on GitHub under the free MIT license. All the art assets (sprites, backgrounds, sound effects, etc.) can also be found on GitHub and are published under a Creative Commons CC BY 4.0 license. This allows easy use of the game artwork for projects of students.

You can subscribe online or setup a dev environment on Windows, Mac or Linux yourself. You need to be able to follow instructions and have some basic technical knowledge.

While the setup on the Mac and Linux are straight forward, Windows is the hardest to get working! (CodeCombat Wiki)

I have setup a local dev environment on my Mac for my daughter, as she does not play regularly but loves to tinker with it from time to time … learning Javascript!

Used some AppleScript magic and Automator to ease the startup of the setup when needed. The setup might vary on your end, as I am using iTerm2 as a Terminal replacement.

on run {input, parameters}
	
	set app_name to "mongod"
        set user_name to "pzTV"
        set path_to_codecombat to "/Users/pzTV/Entwicklung/"

	set the_pids to (do shell script "ps ax | grep " & (quoted form of app_name) & "| grep -v grep | awk '{printf \"%d \", $1}'")
	do shell script ("for PID in " & the_pids & "; do kill -9 $PID; done ")
	
	tell application "iTerm2"
		create window with profile "Mongo"
		tell current window
			
			tell current session
				write text "cd " & path_to_codecombat & "codecombat ; ./bin/coco-mongodb"
			end tell
		end tell
		tell current window
			create tab with profile "CodeCombat"
			tell current session
				write text "cd " & path_to_codecombat & "codecombat ; npm start"
			end tell
			
		end tell
		
		
	end tell
	
	delay 15
	
	tell application "Google Chrome"
		open location "192.168.1.32:3000"
		
	end tell
	
end run

on run {input, parameters}

set app_name to "mongod"

set user_name to "pzTV"

set path_to_codecombat to "/Users/pzTV/Entwicklung/"

set the_pids to (do shell script "ps ax | grep " & (quoted form of app_name) & "| grep -v grep | awk '{printf \"%d \", $1}'")

do shell script ("for PID in " & the_pids & "; do kill -9 $PID; done ")

tell application "iTerm2"

create window with profile "Mongo"

tell current window

tell current session

write text "cd " & path_to_codecombat & "codecombat ; ./bin/coco-mongodb"

end tell

tell current window

create tab with profile "CodeCombat"

tell current session

write text "cd " & path_to_codecombat & "codecombat ; npm start"

end tell

delay 15

tell application "Google Chrome"

open location "192.168.1.32:3000"

end tell

end run

CodeCombat is a really fun way to get into programming and keep your kids motivated.

CodeCombat Website / GitHub

20. January 2018

Element Selections via Regular Expression with jQuery filter

Enjoy coding …

Keep container ratios with pure CSS

Cleaning up the WordPress Feed (Validation)

CONDITIONAL TAGS

REMOVE IFRAMES

REMOVE / DISABLE COMMENTS

REMOVE RESPONSIVE IMAGES

INCLUDE PAGES IN POST FEED

ADJUST AMOUNT OF POSTS

LIMIT BY CATEGORY

Enjoy coding …

60+fps lightweight parallax for jQuery

Villa Anna Speyer – Bed & Breakfast

CodeCombat – programming can be as much fun as a game

Body-Kun – Models for Artists

Voxel Builder – Easy cube-based 3D design with DIY 2D/3D printing

Working with MongoDB? … Use Robo 3T

Puron Metals