Contrary to what you have been looking at, esc_html does not strip all the HTML, it escapes it, meaning it encodes it into safe HTML entities that do not break HTML tags. wp_filter_nohtml_kses strips all the HTML. When in doubt always consult the source code. It is accessible online. esc_attr is short and sweet, uses … Read more
The problem is “When the data managed by the plugin is edited. You have to set your own dirty-flag (e.g. a value in a hidden input field, setup a js-variable) and check your dirty-flag if the user leave the page. But how could you check if the data in the metabox is edited? Are there … Read more
WordPress is far from having a standard conventions for unit testing extensions. Or for extension structure in general. At current time you should either: research how unit testing framework of your choice recommends to work with globals and such for PHP code in general look into WordPress-specific tools for unit testing that start to appear, … Read more
I’m assuming for now that the plugin is open source. If so … Send them an update Most devs appreciate contributions from the community. Contact the original authors and offer your code as a patch to add your new feature. Reference the plugin Optionally, you can just hope that they keep developing the system and … Read more
Few things to explain here: In that tutorial, I only chose the upload_dir as an example of how to do it. A demonstration of how the WP_Filesystem functions work. Normally you would not use the WP_Filesystem to write to the upload directory. That code is not meant to be copy-pasta’d into live production code. Writing … Read more
Skimming through the Core_Upgrader::should_update_to_version() method, it looks like we can override the defined( ‘WP_AUTO_UPDATE_CORE’ ) // true (all), false, minor check, used to setup the local boolean variables$upgrade_dev, $upgrade_minor and $upgrade_major, with the following filters: … apply_filters( ‘allow_dev_auto_core_updates’, $upgrade_dev ) … apply_filters( ‘allow_minor_auto_core_updates’, $upgrade_minor ) … apply_filters( ‘allow_major_auto_core_updates’, $upgrade_major ) … So these filters have … Read more
In the parent __construct args if ajax is set to true the js_vars will be output in the footer of the page. /** * Constructor. The child class should call this constructor from it’s own constructor * * @param array $args An associative array with information about the current table * @access protected */ function … Read more
After further research I figured out a solution. Given the following WP_Query: <?php new WP_Query( array( ‘s’ => ‘some keyword’, //keyword criterion ‘category’ => ‘some category’, //taxonomy criterion ‘_spec’ => ‘some value’, //custom criterion to be handled by the plugin ) ); ?> You can handle custom parameters using pre_get_posts in combination with posts_where: <?php … Read more
In custom tables you do whatever you want. If a view is what you need, use it. However, you might consider separating the code in an exporter. See wp-admin/includes/export.php for a start. If you keep the actual SQL and the export format separate you can: create a new exporter for another table structure easily use … Read more
You actually have several questions in there, so I’ll answer them one by one: However, if I simply do this on my main plugin file, it doesn’t work: add_filter(‘pre_set_site_transient_update_plugins’, array(‘XYZ’, ‘check_update’)); First of all, I’d like to understand what’s the difference between the two scenarios. This is failing because you are calling the method statically, … Read more