Category: WordPress

How to Show Admin Notice on Plugin Activation?

1. Add the code in the Notice Class like Below –

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/**
* Set transient only when the plugin is activated.
*
* @since 3.0.2
* @return void
*/
public static function add_the_transient() {
    /* Create transient data */
    set_transient( 'prefix-activation-notice', true, 5 );
 
}
/**
* Admin Notice on Activation.
*
* @since 3.0.2
* @return void
*/
public function add_activation_notice() {
$itesm = get_posts( array( 'post_type' => 'my_post_type' ) );
if ( count( $items ) > 0 ) {
/* Check transient, if available display notice */
if ( get_transient( 'prefix-activation-notice' ) ) {
?>
<div class="updated notice is-dismissible">
<p>Thank you for using this plugin! <strong>You are awesome</strong>.</p>
</div>
<?php
/* Delete transient, only display this notice once. */
delete_transient( 'prefix-activation-notice' );
}
}
}
 
 

Read More “How to Show Admin Notice on Plugin Activation?”

WPCS with Visual Studio Code

Installation

The easiest way to get started with PHP_CodeSniffer is to download the Phar files for each of the commands:

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# Download using curl
curl -OL https://squizlabs.github.io/PHP_CodeSniffer/phpcs.phar
curl -OL https://squizlabs.github.io/PHP_CodeSniffer/phpcbf.phar
 
 

# Or download using wget
wget https://squizlabs.github.io/PHP_CodeSniffer/phpcs.phar
wget https://squizlabs.github.io/PHP_CodeSniffer/phpcbf.phar

# Then test the downloaded PHARs
php phpcs.phar -h
php phpcbf.phar -h

Composer Read More “WPCS with Visual Studio Code”

After Installation of Visual Studio Code

Go to Preferences  → Settings and then paste code within {} brackets –

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"editor.minimap.enabled": true,
"files.autoSave": "afterDelay",
"editor.autoIndent": true,
"editor.detectIndentation": true,
"editor.fontSize": 14,
"editor.wordWrap": "on",
 
 

 

Thanks!

 

 

Change Custom Post Type Name Safely.

Just replace the second line’s post type names:

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global $wpdb;
$old_post_types = array('old_type' => 'new_type');
foreach ($old_post_types as $old_type=>$type) {
    $wpdb->query( $wpdb->prepare( "UPDATE {$wpdb->posts} SET post_type = REPLACE(post_type, %s, %s)
                         WHERE post_type LIKE %s", $old_type, $type, $old_type ) );
    $wpdb->query( $wpdb->prepare( "UPDATE {$wpdb->posts} SET guid = REPLACE(guid, %s, %s)
                         WHERE guid LIKE %s", "post_type={$old_type}", "post_type={$type}", "%post_type={$type}%" ) );
    $wpdb->query( $wpdb->prepare( "UPDATE {$wpdb->posts} SET guid = REPLACE(guid, %s, %s)
                         WHERE guid LIKE %s", "/{$old_type}/", "/{$type}/", "%/{$old_type}/%" ) );
}
 
 

 

Source: https://wordpress.stackexchange.com/questions/97026/how-do-i-safely-change-the-name-of-a-custom-post-type

Conditional Script Loading for Shotcode

In the functions.php file or in your plugin file write the code below –

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/**
* Check if it should load frontend scripts
*
* @return mixed|void
*/
private function should_load_scripts() {
global $post;
$load_scripts = is_active_widget( false, false, 'wpl_logo_carousel_pro_widget_content', true ) || ( is_a( $post, 'WP_Post' ) &amp;&amp; has_shortcode( $post-&gt;post_content, 'logo-carousel-pro' ) );
 
return apply_filters( 'logo_carousel_pro_load_scripts', $load_scripts );
}
 
/**
* Plugin Scripts and Styles
*
*/
function public_scripts() {
if ( $this-&gt;should_load_scripts() ) {
wp_enqueue_script( 'jquery-isotope-min-js', MY_URL . 'assets/js/jquery.isotope.min.js', array( 'jquery' ), $this-&gt;version, false );
}
}
 
 

How to Set a default Title for the custom post?

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function wpl_lc_add_custom_title( $data, $postarr ) {
   if($data['post_type'] == 'wpl_lcp_shortcodes') {
      if(empty($data['post_title'])) {
         $data['post_title'] = 'Untitled Carousel';
      }
   }
   return $data;
}
add_filter('wp_insert_post_data', 'wpl_lc_add_custom_title', 10, 2 );
 
 

Now use the function

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the_title();
 
 

Gray Scale with CSS with Cross Bowser Support

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img {
filter: gray; /* IE6-9 */
-webkit-filter: grayscale(1); /* Google Chrome, Safari 6+ & Opera 15+ */
filter: grayscale(1); /* Microsoft Edge and Firefox 35+ */
}
 
/* Disable grayscale on hover */
img:hover {
-webkit-filter: grayscale(0);
filter: none;
}
 
 

 

How to a Add Custom Meta Box for Multiple Post Type

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add_action( 'add_meta_boxes', 'myplugin_add_custom_box' );
 
function myplugin_add_custom_box() {
 
add_meta_box( 'myplugin_sectionid', __( 'My Post Section Title', 'myplugin_textdomain' ), 'myplugin_inner_custom_box', 'post' );
 
add_meta_box( 'myplugin_sectionid', __( 'My Post Section Title', 'myplugin_textdomain' ), 'myplugin_inner_custom_box', 'page' );
 
}
 
 

See: Stackexchange , Codex

How to get Category Slug by Category ID in WordPress?

I have got the category id list with the variable $my_cats_id.

So now I have used my own trick to get the slug –

 

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echo str_replace( ' ', '-', strtolower( get_cat_name( $my_cats_id ) ) );