New Thread from Category doesn't preselect Category from dropdown

[Ultimater]

This isn't a feature request per se, as it's the expected functionality.

Go to https://forum.phalconphp.com/category/21/beginners for example (as it has the most threads).
Then click "Start a Discussion" on that page, there's a "Category" dropdown to choose the category again. Expected behavior is it should pre-select "Beginners" in this case. I'd like to suggest use the referrer to determine what to highlight. This JavaScript has been tested thoroughly and would get the job done:

try{
  (function(){
    var r = document.referrer, m = r.match(/\/category\/(\d+)\/([^\/]+)/), e = document.getElementById("categoryId"), o = e.options;
    for(var i=0;i<o.length;i++)if(o[i].value==m[1] && o[i].text.match(/(\w+)/)[1].toLowerCase() == m[2].match(/(\w+)/)[1].toLowerCase())e.selectedIndex=i;
  })();
}catch(E){}

[Jurigag]

Good idea, i like this. Could maybe avoid somehow usage of js and handle it in php.

[Ultimater]

If we're aiming at a PHP solution, we could read $_SERVER['HTTP_REFERER'] and parse it using a similar regular expression, then add a selected to the option to select. We could also change the navigation a bit and ditch the refe(r)rer altogether by creating a different create new topic link which we can extract the category from.