The Iptanus File Upload plugin supports a set of filters and actions for tailoring it to what you need; the full list is in a separate article.
Since version 3.6.0 you can write the code for them inside the plugin itself, from its Dashboard area, with no third-party plugin involved.
Say you want some JavaScript to run as soon as a file has been uploaded. That means implementing the wfu_after_file_upload filter.
Creating a hook
Go to the plugin’s area in the Dashboard, open the Hooks tab, and create a new hook:
The screen that opens asks for a title, a description, the code, a status (active or not), and where the hook should run — in the Dashboard or on the front end. Fill in a title and description of your own.
Filling in the code
Above the code box sit code templates, which save you writing a filter from scratch. Choose “After File Upload Filter” and press “Add Code“. The box fills with the filter function and comments explaining how to use it:
Edit it so that a success message pops up when a file has uploaded. The finished code looks like this:
Set the Status to Active and press Save.
If the code is sound, the new hook appears in the hook list. If it is not, a message at the top of the screen explains the error and the hook is left inactive:
From that screen you can activate, deactivate or delete a hook, and run bulk actions across several at once.
Trying it out
With the filter in place, upload a file from a page. Once it has uploaded, the message appears:
For more information or questions about the Hooks feature, please contact us.
The Iptanus team
To clarify, I am rewording my first question to what should be the parameter xxxxx in “add_action(xxxxx, my-custom-function)” if I want to hook on the after file upload event in my in functions.php file, and how can I fetch the filename in my-custom-function?
It should be “wfu_after_upload”. This is the filter you should use. You can find instructions how to use this filter here.
Please note that it is not a good practice to add actions inside functions.php, unless it belongs to a child theme of your own. If you use a normal theme and you update it then everything you have inside functions.php will be lost.
The plugin’s Pro version has a special page in Dashboard to add hooks, which remain even if you update it. You can also use other free plugins, like Code Snippets.
Regards
Nickolas
The upload function doesn’t work at the mobile end.