The actual documentation of Collection Extension mention that we should change the "base_url" variable in the function renderCollection of extensions/Collection/Collection.body.php file if changing $wgScriptPath messes up our site (obviously it does).
As there is no "base_url" in the last version of Collection for Mediawiki 1.27 (in Collection.body.php file) and because the issue mentioned date from 2012, and because the code presented in the proposed fixed is completely different from the one that I downloaded here (link from the official Collection Extension page), I wondering if it is still relevant and necessary ?
If someone can tell me which one is the good one, which one is up to date and which one is obsolete.
I hope it will help you to put the documentation up to date !
Thanks.