admin - Read For Learn

Fallback media image for featured image not working in admin column

wp_get_attachment_image_src(156, ‘archive_thumbnail’)[0] will only echo the URL of the image. You need to add it to html to display the image. Try this: echo ‘<img src=”‘.wp_get_attachment_image_src(156, ‘archive_thumbnail’)[0].'”/>’; You could add the width etc as well echo ‘<img src=”‘.wp_get_attachment_image_src(156, ‘archive_thumbnail’)[0].'” width=”.wp_get_attachment_image_src(156, ‘archive_thumbnail’)[1].” height=”.wp_get_attachment_image_src(156, ‘archive_thumbnail’)[2].” />’; what happens if someone deletes this image though? Do you have … Read more

How can I display/hide certain content based on a Theme Option field?

@Bowe You would need to create an array in your options function for the checkbox and give it an id a default state and assign the “checkbox” type to it. Here is a sample assuming you already have the code in place for the admin panel <?php // Set variables for the options panel $themename … Read more

Find Memory Usage of Admin

The easist way is the plugin WP System Health, great plugin and works fine. Alternativ you build a function and hook in wp-admin; example admin_footer

Showing Post Counts of One’s (Author) Own in the admin post list

Have a look here for the solution (code needs optimizing, but it works): Help to condense/optimize some working code

Are there any filters to add additional columns to the list table on edit-comments.php?

I’m afraid that there is no easy way to get that done yet because the only hook i found is manage_comments_custom_column and that is an action hook and not a filter hook so you can’t add columns like manage_posts_columns. so as far as i can tell the long way here is the only way. but … Read more

Two admins in Users and one in the database?

That’s typically the result of users deleting accounts directly in the database. The functions that count users queries to the usermeta table to determine how many users are of a given type, when users do manual deletion they often forget to remove relational data left in the meta table, which in turn throws off the … Read more

What would be the advantages/disadvantages of remote plugin installation?

Also look into this tool – http://markjaquith.wordpress.com/2010/07/24/plugin-installer-tool/

Show info to author only

Just compare display names: $currentuser = get_currentuserinfo(); if ( get_the_author() == $currentuser->displayname ) { // current user is the post author; do something } The get_the_author() function returns displayname, which should be able to be compared against the displayname parameter that is a part of the $currentuser object.

How to get “Widget Logic” plugin’s input value in a custom widget code (to display on the Widget admin page)

I’m almost sure there is no way to do that (server side) without hacking core files, bu luckly i know a little jQuery and i’ve come up with this hackish function that does the job just fine: function widget_logic_hack(){ global $pagenow; if ($pagenow == ‘widgets.php’){ ?> <script> function hack_logic(){ jQuery(‘input[id$=”widget_logic”]’).each(function() { if (jQuery(this).val().length === 0){}else{ … Read more

Preserve custom URL parameter after saving post

I finally figured this one out. Turns out I was so focused on filters and actions that I forgot about the basics. In order to preserve any custom URL parameters after saving a post (via submitting the form) do the following: Filter your admin URL with a conditional that checks for the parameter you want … Read more

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