Add functionality to model creation in django admin site
I creating a website using django. I want to add extra functionality to model creation and changing pages in standard admin site, that is input text field and button. Idea is to paste a link to post on another website and press button to fill some fields with fetched data and than continue creation. I`m new to django and really have no idea how to add extra field and button for this purpose. Question is how to add field, button and js to admin site, not how to fetch data and process link.