Pgn

This template is new. It has passed all my tests, but I might do some modifications to it during the next few weeks. --David Göthberg (talk) 15:02, 4 December 2009 (UTC)

This is the {{pgn}} or pagename meta-template.

It helps handling pagenames, especially when working with subpages.

The "page" parameter

The operations this template does is normally based on the pagename of the page it is used on. But any other pagename can be fed as the "page=" parameter. Note that there are two different page parameters. Like this:

{{pgn|page}} = Pgn

{{pgn|page|page=Help:A/B/C/D}} = A/B/C/D

The double usage of page might seem confusing, but it is convenient when using this template together with other templates such as {{basepage subpage}} and {{namespace detect}} that also understand the "page=" parameter.

Magic words

Some of the functions in this template are mostly here for completeness. When there is an exactly equivalent magic word that works in all namespaces, then it is also listed in these examples. We recommend you use the magic word if there is one, since that is more efficient. It is when working with subpages that this template excels.

Namespace and pagename

This template can return the current namespace, subject space and talk space. Like this:

{{pgn|ns}}  = {{NAMESPACE}}

{{pgn|ss}}  = {{SUBJECTSPACE}}

{{pgn|ts}}  = {{TALKSPACE}}

{{pgn|ts| page=Help:A/B/C/D }}  = {{TALKSPACE: Help:A/B/C/D }}

Template

Template

Template talk

Help talk

This template can return the pagename, and it can combine the pagename with the namespace, subject space or talk space. Like this:

{{pgn|page}}      = {{PAGENAME}}

{{pgn|fullpage}}  = {{FULLPAGENAME}}

{{pgn|ns|page}}   = {{FULLPAGENAME}}

{{pgn|ss|page}}   = {{SUBJECTPAGENAME}}

{{pgn|ts|page}}   = {{TALKPAGENAME}}

{{pgn|ts|page| page=Help:A/B/C/D }}  = {{TALKPAGENAME: Help:A/B/C/D }}

Pgn

Template:Pgn

Template:Pgn

Template:Pgn

Template talk:Pgn

Help talk:A/B/C/D

This template correctly removes the colon ":" for the main (article) space. It also converts namespace aliases such as "Image" to "File". Like this:

{{pgn|ss|page| page=Talk:An article }}  = {{SUBJECTPAGENAME: Talk:An article }}

{{pgn|ns|page| page=Image:An image }}   = {{FULLPAGENAME: Image:An image }}

{{pgn|ns|page| page=WP:Village pump }}  = {{FULLPAGENAME: WP:Village pump }}

An article

File:An image

WP:Village pump

Subpages

The following examples are about subpages. To see them correctly view this documentation at Pgn/doc instead.

This template can return the basepagename of the current page, and it can combine the basepagename with the namespace, subject space or talk space. Like this:

{{pgn|basepage}}

{{pgn|fullbasepage}}

{{pgn|ns|basepage}}

{{pgn|ss|basepage}}

{{pgn|ts|basepage}}

{{pgn|ns|basepage| page=Help:A/B/C/D }}

Pgn

Template:Pgn

Template:Pgn

Template:Pgn

Template talk:Pgn

Help:A/B/C/D

This template can return the subpagename. Like this:

{{pgn|subpage}}

{{pgn|subpage| page=Help:A/B/C/D }}

Pgn

A/B/C/D

This template can return the rootpage. Like this:

{{pgn|rootpage}}

{{pgn|ns|rootpage}}

{{pgn|fullrootpage}}

{{pgn|fullrootpage| page=Help:A/B/C/D }}

Pgn

Template:Pgn

Template:Pgn

Help:A

Relative paths

This template can handle relative paths. And it can take the name of a subpage to add to the path. Like this:

{{pgn|..}}

{{pgn|ns|..}}

{{pgn|ns|..| sibling }}

{{pgn|ns|..| page=Help:A/B/C/D }}

{{pgn|ns|..| sibling | page=Help:A/B/C/D }}

Pgn

Template:Pgn

Template:Pgn/sibling

Help:A/B/C/D

Help:A/B/C/D/sibling

This template can handle relative paths up to two levels deep:

{{pgn|ns|..|..}}

{{pgn|ns|..|..| uncle }}

{{pgn|ns|..|..| page=Help:A/B/C/D }}

{{pgn|ns|..|..| uncle | page=Help:A/B/C/D }}

Template:Pgn

Template:Pgn/uncle

Help:A/B/C/D

Help:A/B/C/D/uncle

Subpage levels

This template can split up and handle each level in a pagename, in up to four subpage levels. (The "+ +" used in this example is to show when this template returns an empty string.) Like this:

{{pgn|page1| page=Help:A/B/C/D }}

{{pgn|page2| page=Help:A/B/C/D }}

{{pgn|page3| page=Help:A/B/C/D }}

{{pgn|page4| page=Help:A/B/C/D }}

+{{pgn|page4| page=Help:A/B }}+

A

B

C

D

++

And it can put the parts together in pretty much any way you want. Like this:

{{pgn|ns|page1|page2| page=Help:A/B/C/D }}

{{pgn|page3|page4| page=Help:A/B/C/D }}

Help:A/B

C/D

Parameters

List of all parameters:

{{pgn| ns / ss / ts | page / basepage / rootpage | page = User:Example }}

{{pgn| fullpage / fullbasepage / subpage / fullrootpage }}

{{pgn| .. | .. }}

{{pgn| page1 | page2 | page3 | page4 }}

Note that several of the parameters can be fed to more than one position.

Technical details

This template detects subpages even when used in namespaces that don't have the MediaWiki subpage feature enabled. Thus this template works the same in all namespaces.

This template calls {{pgn/core}} which holds most of the code for {{pgn}}, while {{pgn}} itself does parameter preprocessing.

See also

Pagename-handling and detection templates:

• {{basepage subpage}} – For detecting if on a basepage, subpage or subsubpage.
• {{pgn}} – Can take apart and put together pagenames in several ways.
• {{if pagename}} – For pattern matching on the pagename.
• {{if pagename multi}} – For pattern matching on the pagename, has input reuse.
• {{IP-user other}} – For detecting IP-user pages.
• {{IP-talk}} - Return: 1) IP user talk page 2) registered user talk page 3) not user talk page.

Easy to use namespace-detection templates:

• {{main other}} – For article templates.
• {{talk other}} – For talk page templates.
• {{user other}} – For user page templates.
• {{wikipedia other}} – For detecting "Wikipedia:" pages.
• {{file other}} – For file (image) templates.
• {{template other}} – For detecting template pages.
• {{help other}} – For help page templates.
• {{category other}} – For category templates.
• {{portal other}} – For portal templates.
• {{book other}} – For detecting book pages.

More complex namespace-detection templates:

• {{namespace detect}} – The very versatile one.
• {{namespace detect showall}} – The extremely versatile one, has input reuse.
• {{talkspace detect}} - For detecting talk pages on various namespaces.
• {{main talk other}} – Separates some namespaces.
• {{main talk category other}} – Separates some namespaces.

Technical stuff:

• Namespace – Lists all the namespaces.
• Help:Magic words – About {{NAMESPACE}} etc.
• Help:Extension:ParserFunctions – About {{#ifeq:|||}} etc.