plugin-development - Read For Learn

Is there a way to list tags order by post_meta field

$querystr = ” SELECT DISTINCT — post_meta.meta_value, key2.name as tag_name,key2.slug as tag_slug FROM $wpdb->posts key1 LEFT JOIN $wpdb->term_relationships ON (key1.ID = $wpdb->term_relationships.object_id) LEFT JOIN $wpdb->postmeta post_meta ON (key1.ID = post_meta.post_id) LEFT JOIN $wpdb->terms key2 ON ($wpdb->term_relationships.term_taxonomy_id = key2.term_id) LEFT JOIN $wpdb->term_taxonomy key3 ON ($wpdb->term_relationships.term_taxonomy_id = key3.term_id) WHERE 1=1 AND post_meta.meta_key = ‘likes_count’ AND post_meta.meta_value > … Read more

Synchronize Custom post type tags to WordPress default posts tags

You need to register the post_tag taxonomy for the post type. For a quick, after the fact, way to do this (meaning the CPT has already been registered, etc.), you can use register_taxonomy_for_object_type(). A workable example is below. Edit the value for $object_type, and place the example below in the functions.php of your child theme: … Read more

How to Add Page Template from Plugin without Losing $this

Your walker argument in wp_list_pages should be an instance, not a string. ‘walker’ => new Walker_Page_New()

add_shortcode is not working [duplicate]

The shortcodes only run if they are used in the WordPress environment. It appears you are using the shortcode in a page that the WordPress’s engine has not been loaded. Also, always store your data in a variable and then return the value instead of using echo: function sac_form() { $data=” <html> <head></head> <body> <form> … Read more

Is using register_activation_hook required?

You don’t have to use the register_activation_hook or register_deactivation_hook hook, they are optional. As their name suggests, they are hooks planned to run a task on plugin’s activation/deactivation, such as updating the status of all users for some purpose. So, if your plugin doesn’t require such tasks, then simply don’t use them. If you want … Read more

Can’t get JS code to work with shortcode

You need to return the Shortcode generated string, not echo, like this: function gg_product_front_end() { wp_register_script( ‘gg_loadProducts_frontEnd’, plugins_url( ‘js/front_end.js’, __FILE__ ), array( ‘jquery’ )); wp_enqueue_script( ‘gg_loadProducts_frontEnd’ ); return ‘<p id=”test”>Test!</p>’; } Also, you need to call the JavaScript function, like this: function gg_loadProducts_frontEnd() { console.log( ‘Test!’ ); } gg_loadProducts_frontEnd(); Otherwise Test! will not be logged … Read more

Use php libarary in wordpress plugins

You can always use the Composer when making a plugin and require all its dependencies. But as MikenGarrett said, finally you have to bundle all the required vendors into the plugin as a whole package. There are WordPress repository, containing /vendor/ directory1 and their development environment containing composer.json file declaring production-dependencies (‘require’)2. But using Composer … Read more

Can I differentiate between “Delete Post Permanently” and “Empty Trash” and do something for each accordingly?

So as leymannx pointed out in his comment, the “delete_post” hook actually handles both scenarios I was looking for, as it seems to know to run a “for each post deleted, do x” when “Empty Trash” is clicked and will also “do x” when “Delete Post Permanently” is clicked! My final code ended up looking … Read more

What is the use of get_option method

Well, as you can see in the contributed example to the WordPress Reference, it is not that add_settings_field magically knows about a setting being true or false, and it is not limited to checkboxes (boolean flags): Instead, the function signature states clearly that the $callback parameter it is required. And the introduction says: The $callback … Read more

set_sale_price in WooCommerce [closed]

Thanks to a colleague at codeable I was able to solve this by saving the product after setting the sale price: $editedProduct->save(); Simple as that. If only I’d known that 6 hours ago!

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