How To Create your own bulk actions In WordPress

Create your own bulk actions

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How To Create your own bulk actions In WordPress

Including version 4.6 it was quite difficult to add custom bulk actions to the WordPress admin pages. In version 4.7 a hook is added that simplifies the task a lot:

Defining the hook

As an example we’ll use the post page, the variables are named accordingly

This Code For Definig the hook

 

 

You can define more than one bulk action in this function because it merely adds an additional element to the array $bulk_actions. You simply have to take care that you use different names for the element keys and, logically, for the display texts.

The screen ids

The screen id of an admin page can be displayed this code snippet:

 

This table Will shows the ids for some admin pages Without Use get_current_screen();   :

PAGE

$SCREEN_ID

FILE

Media Library upload upload.php
Comments edit-comments edit-comments.php
Tags edit-post_tag edit-tags.php
Plugins plugins plugins.php
Links link-manager link-manager.php
Users users users.php
Posts edit-post edit.php
Pages edit-page edit.php
Edit Site: Themes site-themes-network network/site-themes.php
Themes themes-network network/themes
Users users-network network/users
Edit Site: Users site-users-network network/site-users
Sites sites-network network/sites

 

Defining the callback function__

Here’s an overview of How Use Full Function :

 

As mentioned above you can define more than one custom bulk action but only a single callback function. So you first have to test which bulk action has been selected (lines 4 and 13).

Next the posts are processed in a foreach loop (lines 5 and 14). In this loop you can load the post with get_post or the post meta with get_post_meta() and process the data. Next the changed data is written back to the database with wp_update_post() or update_post_meta().

The variable $redirect_to (lines 9 and 18) is used to define the URL the browser will change to after the bulk actions have been completed, in our case it is set to .../wp-admin/edit.php?paged=1. We do not want to change the location but to use the variable to pass a value to the page the browser is redirected to.
With the function add_query_arg() we add an argument to the URL that specifies the number of processed posts: /wp-admin/edit.php?paged=1&bulk_posts_processed=1.

Display a success notification

After completing processing all posts you can display an admin notice using the action admin_notices(). The second parameter of the function call needs to contain the text string we have defined in our filter bulk_actions-{screen-id}:

 

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