plugin-development - Read For Learn

Overriding the template files using a plugin for all themes

Does hooking into a plugin action / filter override the plugin’s function for that hook?

It depends entirely on the specific plugin and the specific hook. It’s completely up to plugin developers what they want to allow other developers to do. They could allow developers to replace entire functions; to perform a custom action at the beginning, middle, or end of a function; to modify the result of a function; … Read more

Custom Admin Plugin – Injecting repeatable select fields (add, remove) into an Ordered List

A form is not allowed to be a child element of a table, tbody or tr. Attempting to put one there will tend to cause the browser to move the form to it appears after the table (while leaving its contents — table rows, table cells, inputs, etc — behind). You can have an entire … Read more

WordPress Fatal error: Uncaught Error: Call to undefined function dbDelta()

I was including the wrong file. Instead of update.php I should include upgrade.php. I know it’s a silly mistake but maybe help someone who does the same in future.

What is the source of the $post_id in a hook argument?

I thought if you name the parameter as $post_id, the hook automatically adds the post id value, but that’s not the case? Correct, that’s not the case. What you name it has no effect on what value WP passes through that argument. If you check out the reference for the post_thumbnail_size hook, you can see … Read more

Hook for validating and rejecting frontend image upload

I found it after trying with several hooks. Use ‘init’ and check if $_FILES is empty, if not, do what you want to do. init hook

WordPress discards PNG file when uploading plugin file

Always hide a page from the menu

Creating a return url for getting data from external api

You could register a rest route (ref: https://developer.wordpress.org/reference/functions/register_rest_route/). In your case, something like this would do the trick: register_rest_route( ‘your-plugin/v1’, ‘/payments/(?P<trans_id>\d+)(?:/(?P<amount>\d+))?’, array( ‘methods’ => ‘GET’, ‘callback’ => array( $this, ‘your_callback_function’), ‘args’ => array( ‘trans_id’ => array( ‘validate_callback’ => function($param, $request, $key) { return is_numeric( $param ); } ), ‘amount’ => array( ‘validate_callback’ => function($param, $request, … Read more

Gutenberg component in a plugin admin

as the person who closed the issue explained, you need to wrap your code with PopoverProvider in order for it to work correctly

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