WordPress Permissions Issue for Media Library / uploading

As you can see in wp-includes/script-loader.php, the exact message ‘An error occurred in the upload. Please try again later.’ is the default error message. After looking further in wp-includes/js/plupload/handlers.js you can realize that something specific happened. You could debug this by setting a breakpoint to look up exact error code. See https://stackoverflow.com/a/13372025/2234089 for more information … Read more

Add URL in image upload error message

It’s probable that HTML tags are being removed from output. You can test this by adding other HTML tags (ex: <strong>) and see if they are removed. If the bold text shows, it’s possible then that bold text is permitted but not links (using wp_kses() or similar). I backtracked the code quite a bit to … Read more

Is there a way to override only a portion of the function print_media_templates defined in wp-includes\media-template.php?

No, there isn’t. Unless there’s an apply_filters() call, you can’t modify any of the output. You mentioned “the only hook is to the entire function”, but that’s not the case either. There is a do_action() call at the end, but this is an action hook, so it only lets you run something at the end … Read more

WordPress Media Uploader not displaying image that has just been uploaded

Your issue sounds like a visual bug in the WordPress Media Uploader’s interface after an image has been uploaded, especially since you mentioned that the image appears in the right-hand preview pane but not as a selectable thumbnail. Try to force refresh the media frame after upload. You can use the add:attachment event to force … Read more

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