Custom prefix for content element in mediawiki

Question

MediaWiki

Task:
on a page in mediawiki, set the root index (prefix) to the number in the content, i.e. for example, somehow set the initial index to 4.1 and then in the content, and on the page

== First element ==
Will look like 4.1.1

== Second element ==
Will look like 4.1.2

=== First subelement of the second element = ==
Would look like 4.1.2.1

Is this even feasible? I looked through the documentation and didn't find anything like it.

Now I have to install _NOTOC_ and generate content manually, which is not very convenient.

Answer 1

I also faced the same problem... search on the Internet didn't give anything... I had to do it myself :)
In general, you need to edit the code a little:
/w/includes/parser/Parser.php

$toc .= Linker::tocLine( $anchor, $tocline,
                    $numbering, $toclevel, ( $isTemplate ? false : $sectionIndex ) );

replaced by

if (!empty($tocline)) {
                $toc .= Linker::tocLine( $anchor, $tocline,
                    $numbering, $toclevel, ( $isTemplate ? false : $sectionIndex ) );
                }

and

$head[$headlineCount] = Linker::makeHeadline( $level,     
                $matches['attrib'][$headlineCount], $anchor, $headline,
                $editlink, $legacyAnchor );

replaced by

if (!empty($tocline)) {                                   
            $head[$headlineCount] = Linker::makeHeadline( $level,     
                $matches['attrib'][$headlineCount], $anchor, $headline,
                $editlink, $legacyAnchor );                           
            }

now in the Wiki you can start the table of contents from the desired item:
__TOC__
== ==
== ==
== ==
== ==
=== ===
==== Test 1 ====
==== Test 2 = ===