Display thumbnail from custom field

can you explain why do you need custom fields ? (personally i think they are HUGELY over-used.. especially for images ) if there is no specific reason why you need it , you could use the the_post_thumbnail(); function . like so : the_post_thumbnail(‘thumbnail’); // Thumbnail (default 150px x 150px max) the_post_thumbnail(‘medium’); // Medium resolution (default … Read more

How to get current image’s slug in WP_image_editor?

Try adding this to functions.php: add_filter(“wp_image_editors”, “my_wp_image_editors”); function my_wp_image_editors($editors) { array_unshift($editors, “WP_Image_Editor_Custom”); return $editors; } // Include the existing classes first in order to extend them. require_once ABSPATH . WPINC . “/class-wp-image-editor.php”; require_once ABSPATH . WPINC . “/class-wp-image-editor-gd.php”; class WP_Image_Editor_Custom extends WP_Image_Editor_GD { public function generate_filename($suffix = null, $dest_path = null, $extension = null) { … Read more

Circumventing the normal image upload process

If the question is “Why don’t my images load?” the answer is “Don’t use relative URLs in a WordPress context.” Use functions like admin_url and these other related functions instead. Relative URLs are relative to the URL of the page you are on, and are calculated by the browser. In other words, relative URLs are … Read more

Automatically wrap post image in div

It’s the image_send_to_editor filter: if(is_admin()){ add_filter(‘image_send_to_editor’, ‘wrap_my_div’, 10, 8); function wrap_my_div($html, $id, $caption, $title, $align, $url, $size, $alt){ return ‘<div class=”mydiv” id=”mydiv-‘.$id.'”>’.$html.'</div>’; } } For existing images/posts you can try the regex in the function below

Issues renaming images during upload

Sent Header The following error simply states that the error message was output directly (sent header) Warning: Cannot modify header information – headers already sent by (output started at /home/lorem/public_html/clients/ipsum/wp-content/plugins/myplugin/test.php:504) in /home/lorem/public_html/clients/ipsum/wp-includes/pluggable.php on line 864 PHP Error notice Notice: Undefined variable: post_id in /home/lorem/public_html/clients/ipsum/wp-content/plugins/myplugin/test.php on line 18 $_REQUEST is a combination of a lot of … Read more

How can I make all gallery images to open in a new window?

(Update 04.05.2012: Include captions) Let’s start with a solution … There is no filter especially for gallery image links. There is also no filter for the gallery shortcode output. So we have to fake one: add_action( ‘after_setup_theme’, ‘wpse_50911_replace_img_shortcodes’ ); /** * Replace the default shortcode handlers. * * @return void */ function wpse_50911_replace_img_shortcodes() { remove_shortcode( … Read more

Restrict the number of images to upload per post

I won’t go into the code specifics right now, because I am not sure if you need me to. You essentially need to modify the SWFUpload JavaScript settings array to set the file_upload_limit to 1. Unfortunately I don’t believe SWFUpload allows you to change that settings variable after it has been inited, because it has … Read more

Pasting images removes class attribute

Instead of pasting into the Visual editor, switch to the html editor for pasting any kind of html, or using shortcodes. I’d recommend checking the “disable the visual editor” checkbox in your user profile. Then install Mark Jaquith’s Markdown on Save plugin for more readable formatting without the wysiwyg pitfalls.

Separate attachment images from post loop

The best way to assign images to a given post is to just upload them in the WordPress post editing/new post area. You can also delete images from there. With that said, here would be how you do that. You’re going to hook into wp_enqueue_script, and call wp_enqueue_script to add your gallery script to the … Read more