• View
• Edit
• History
• Attach
• Print
• Backlinks

MoreCustomPageVariables-Talk

Marcus Denning - 20170815 07:45 - This is the best place I can think of to post this, because it is too good to keep to myself. A huge thanks to Petko!
Here was my original question:
I have been searching and have not seen this issue addressed yet.
I guess I do not understand enough about the core processing of variables from the page and group headers.

The purpose is to have a an anchor [[#top]] in the groupheader page and {$top} or {$:top} variable with the value
[[#top | %color=#0000ff%''top''%%]]
in it contained within the groupheader page so that I do not have to continually add
[[#top]][[#top | %color=#0000ff%''top''%%]]
at the beginning of every page and still every page can just use a {$top} or {$:top} variable in it.
I keep getting errors on previews to test a config.php addition of a custom page variable.
I want to implement something in a groupheader like this:
$FmtPV['$top'] = "[[#top | %color=#0000ff%''top''%%]]";
And formatting it with escaped characters still errors out like this:
$FmtPV['$top'] = "\[\[#top | %color=#0000ff%\'\'top\'\'%%\]\]";
It keeps giving errors on an unexpected '[' in the pmwiki.php module. Do I need to resort to unicode to push this through?

uh, help please?

PETKO'S ANSWER:
Don't use a Page variable for this, use a markup rule, and a css style. Page variables are for page-dependent variables, that is, something specific for one page and different for another page, eg the title or the URL.

Here is your custom markup:

  Markup('#top',
    "<links",
    '/\\(:top:\\)/',
    "[[#top|top]]");

This means: a rule uniquely named "#top" ,
   before links get to be processed,
   when in the text we find (:top:) ,
   replace it with [[#top|top]] .

Here is your custom CSS to add in pub/css/local.css:

   a[href="#top"] {color: blue; font-style: italic;} 

This means: when a link with the reference "#top" is found, make it blue and italic. This way, no need for %blue%''...''%% (#0000ff=blue)

That's it.

With the custom style, you may find that writing [[#top|top]] is actually not that much harder than (:top:) or {*$:Top} , and I will agree.

Finally, I wouldn't place the [[#top]] anchor in a GroupHeader for every group, instead I'd place <a id="top"></a> it in the skin template.

Petko

Follow-up: If you must for some reason create a page variable with a static text string, you need to enclose it in two layers of quotes:
$FmtPV['$top'] = "\"[[#top | %color=#0000ff%''top''%%]]\"";
This string is evaluated by PHP. It is very highly recommended to NOT place here some user-supplied text, either from the wiki text or from the $_REQUEST/$_GET/$_POST/$_COOKIE variables, or you'll easily open critical security holes. For the latter, see HttpVariables. --Petko August 15, 2017, at 10:06 AM

Hi, is there a way to make a part of page name a variable in local config file. Some like with

 
{(substr "PmWiki" 0 1)}

function.

Thanks, Teukka

# Get the group and page name
$pagename = ResolvePageName($pagename);
$name = PageVar($pagename, '$Name');
$my_special_config_variable = substr($name, 0, 1);

Thank You so much. This was great help for me.
Teukka

I have a template with an image I want to modify. Specifically, in the template file I have <img src="{ $ CustomImage}">. I want to modify this variable in the wiki edit mode so that I can set a unique "splash" image for each page. Is there anything like:

{SetVar CustomImage test.jpg}

that I can include in the bottom of my wiki code.

  chris 

       <!--wiki:{$Group}-{$Name}.Logo {$Group}.Logo {$SiteGroup}.Logo-->

I have a question. Is it possible to store a variable from a cookbook using FmtPV and call it in the wiki? It works perfectly when I store a variable in config.php, but it doesnt when I write it in a cookbook. I suppose I should be clearly specifying in which php cookbook the variable is stored. I wrote :

 $FmtPV['$TestVariable'] = "'SelectQuery is outputting'";  

in the selectquery.php cookbook

and in a page using this cookbook, i tried to call it using {$TestVariable}. But got no result.

Thanks for the support... Chris

In your script, place global $FmtPV; before defining $FmtPV['$TestVariable']. Also make sure you include your cookbook script from config.php or from Group.Page.php. --Petko August 20, 2009, at 04:34 PM

Note about changing variables

Please remember that changing core page text variables will affect your wiki. If you change the following page text variable this will affect your RecentChanges pages:

$FmtPV['$CurrentTime'] = 'date("H:i:s")'; // 14:29:32

I would recommend something like:

$FmtPV['$NowTime'] = 'date("H:i:s")'; // 14:29:32

Otherwise the date may not show in RecentChanges pages.