Last modified: 2007-08-02 21:17:23 UTC

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Bug 10757 - Problem with wikilinks in template Parameter
Problem with wikilinks in template Parameter
Status: RESOLVED INVALID
Product: MediaWiki
Classification: Unclassified
Templates (Other open bugs)
unspecified
All All
: Normal normal (vote)
: ---
Assigned To: Nobody - You can work on this!
:
Depends on:
Blocks:
  Show dependency treegraph
 
Reported: 2007-07-30 22:33 UTC by blauerflummi
Modified: 2007-08-02 21:17 UTC (History)
3 users (show)

See Also:
Web browser: ---
Mobile Platform: ---
Assignee Huggle Beta Tester: ---


Attachments

Description blauerflummi 2007-07-30 22:33:52 UTC
There is a Problem with wikilinks in template parameters. I wanted to use the template http://de.wikipedia.org/wiki/Vorlage:Infobox_Bahnhof

Some of the parameters add  [[ and ]] to the parameter text in order to automatically generate wikilinks. I want to use the parameter Art, to display two links. Therefore I tried the parameter text" Link1]] , [[Link2". the brakets in the beginning and the end should be inserted automatically, as you can see in the source  code:

{{#if: {{{Art|}}} |
! [[Bahnhof#Bahnhofsarten|Art]]
{{!}}
[[{{{Art|}}}]]
}}

However, the result is not as supposed. Instead, the layout gets totally messed up, as you can see here: http://de.wikipedia.org/wiki/Benutzer:Blauerflummi/Testseite_Infobox_Bahnhof_2 (Use the version history, to see, what it should look like.

What is the reason for this problem, and how can It be solved?
Comment 1 Thomas "Tango" Dalton 2007-07-30 23:18:15 UTC
I think the parser is getting confused when it sees the end of a wikilink without being able to find the start of it, and it never realises that it is in a template parameter, so ends up not parsing anything at all and just outputs the wikitext. It's possible the parser could be altered to work better in this situation, but I doubt it would be easy. I think your best bet is to alter the template (perhaps add an alternative parameter which doesn't have [[ and ]] added to it).
Comment 2 Steve Sanbeg 2007-07-31 22:54:55 UTC
The problem is that once the parser starts parsing the [[, then the | is used for that.  The solution is to delay parsing the link until after the template is parsed.  I've already fixed the example page listed; this behavior is inherent in the syntax, so changing the parser wouldn't help.

Comment 3 TMg 2007-08-02 18:34:54 UTC
This is not a parser bug. Simple change the template:

{{#ifexist: {{{Art}}} | [[{{{Art}}}]] | {{{Art}}} }}

Then almost all kinds of parameter text can be used:

Art = Link1
Art = [[Link1]]
Art = [[Link1]], [[Link2]]
Comment 4 Thomas "Tango" Dalton 2007-08-02 21:17:23 UTC
That's not perfect - really you want an #isAValidPageName rather than #ifexist, otherwise you won't get redlinks for pages that could exist but don't.

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