You are perfectly right about the analysis of the issue, even if the terms you employ are a bit confusing. There is no such thing as “an instance of the image” : once you have inserted an image into a post, modifying the original image title or caption (via the Media menu for example) will … Read more
Filters? Anyone? There’s no filter there to help: page_template_dropdown($template); is used to build the drop down and it’s not filterable. Sneaking into the Templates Array? To build the drop downs contents, the core meta box uses get_page_templates(). From inside, the function looks like the following: $themes = get_themes(); $theme = get_current_theme(); $templates = $themes[$theme][‘Template Files’]; … Read more
I would use the is_page_template() conditional: if ( is_page_template( ‘page-courses.php’ ) ) { // The current page uses your // custom page template; // do something } Edit You would use this conditional inside your filter callback: function wpse83525_filter_the_title( $title ) { if ( is_page_template( ‘page-courses.php’ ) ) { return ‘Custom Title’; } return $title; … Read more
It would be nice if WordPress had a standards based cache directory, but since it doesn’t I think the best option is to keep it in the plugin folder itself. Uploads are in my opinion for actual uploads and cache files are not really considered as such. I think it easier to manage , reduces … Read more
For full explanation of what’s happening see this post (this is for deactivating plug-ins, but the problem is the same). A brief explanation: Plug-ins are essentially activated by adding them to the array of active pug-ins stored in the database. When you activate the first plug-in, WordPress retrieves the array of all currently active plug-ins, … Read more
The Proper Network Activation meta-plugin was written precisely for cases like this.
What you need is in global $wp_meta_boxes indexed by get_current_screen()->id. Removing the screen options will also remove the metaboxes which you can do just before screen options are displayed using the ‘in_admin_header’ hook. So let’s assume you want to get rid of the “Send Trackbacks” screen option which you see in this screenshot: Drop the … Read more
For testing purposes you can use the log system (php_error.log): error_log(‘Plugin activated’, 0); // Check for DB table existance if(!$this->hasDBTable()){ error_log(‘Database not present’, 0); if($this->createCELabelsDBTables()){ error_log(‘Database was created.’, 0); } else { error_log(‘Error creating the CE Labels Plugin db tables!’, 0); } } else { error_log(‘Database OK’, 0); } To output error to the user … Read more
global $wpdb; $image_src = wp_upload_dir()[‘baseurl’] . “https://wordpress.stackexchange.com/” . _wp_relative_upload_path( $filename ); $query = “SELECT COUNT(*) FROM {$wpdb->posts} WHERE guid=’$image_src'”; $count = intval($wpdb->get_var($query)); You can use this at the top of your code. Then check the value of $count. If it’s 0, then you can continue adding the attachment
There is already a huge list built for you, which can be returned by wp_kses_allowed_html() based on context, and filtered via the wp_kses_allowed_html filter, also contextually. Creating that list should not be hard. However, “the whole range of HTML tags that might appear in an HTML email” should be pretty close to the range allowed … Read more