Extension talk:VariablesExtension

From MediaWiki.org

{{#vardefine:variable|value}}{{
#ifeq:
    {{#var:variable}}|
    value|
    {{#vardefine:variable|nextvalue}}|
    {{#vardefine:variable|prevvalue}}
}}

{{#vardefine:variable|value}}{{
#vardefine:variable|
    {{#ifeq:
        {{#var:variable}}|
        value|
        nextvalue|
        prevvalue
    }}
}}

[edit] use of undefined variables

Sometimes you want to use a variable which has not been set before and you expect it to return an empty string. I suggest to change the code of function "varf" as follows:

 function varf( &$parser, $expr = '' ) {
   if (isset($this->mVariables) && array_key_exists($expr,$this->mVariables)) return $this->mVariables[$expr];
   return '';
 }

84.58.192.102 09:11, 28 January 2008 (UTC)

[edit] Number incrementing through page

I'm trying to write a template, two templates in fact, that will increment a number through a page, ie.

{{@@}}
{{@}}
{{@}}
{{@}}
{{@@}}
{{@}}
{{@}}

@@ starts the counter at 1 and prints it and @ increments the number and prints it.

I expect the following to appear:

1 2 3 4 1 2 3

But I get the following:

1 2 2 2 1 2 2

I'm using the following code for the templates.

Template: @@

{{#vardefine:n|1}}{{#var:n}}

Template: @

{{#vardefine:n | {{#expr:{{#var:n}} + 1}}}}{{#var:n}}

Thanks.

--Wahooney 14:05, 11 April 2008 (UTC)

Your problem is that variables don't persist across templates, so you need to pass the value of n from @@ to @. So, your page needs to be:

{{@@}}
{{@|{{#var:n}}}}
{{@|{{#var:n}}}}
{{@|{{#var:n}}}}
{{@@}}
{{@|{{#var:n}}}}
{{@|{{#var:n}}}}

--Snuck 05:31, 15 April 2008 (UTC)

• On a 1.12 version of MediaWiki, I get 1 2 3 4 1 5 6 which is not what was expected, but:

{{@@|{{#var:n}}}}
{{@|{{#var:n}}}}
{{@|{{#var:n}}}}
{{@|{{#var:n}}}}
{{@@|{{#var:n}}}}
{{@|{{#var:n}}}}
{{@|{{#var:n}}}}

gives (to me): 1 2 3 4 1 2 3 . --Nbrouard 14:38, 25 June 2008 (UTC)

{{@@|}}
{{@|}}
{{@|}}
{{@|}}
{{@@|}}
{{@|}}
{{@|}}

is also working with the new parser. --Nbrouard 15:14, 26 June 2008 (UTC)

[edit] Multiple inclusions in a template, still counting

Let funcone be the following template:

{{@|}}
{{@|}}
{{@|}}
{{@|}} Inclusion of content
{{{content}}}
Redefining n for second inclusion
{{#vardefine: n|36}}
{{@|}}
{{@|}}
Second inclusion of content
{{{content}}}
after second content

Trying on the following wiki text:

Testing Funcone
{{@@|}}
{{funcone|content=
{{@|}}
{{@|}}
{{@|}}
{{@|}}
{{@|}}
}}
{{@|}}

I get:

Testing Funcone 1 2 3 4 5 Inclusion of content 6 7 8 9 10 Redefining n for second inclusion

37 38 Second inclusion of content 6 7 8 9 10 after second content 39

instead of:

Testing Funcone 1 2 3 4 5 Inclusion of content 6 7 8 9 10 Redefining n for second inclusion

37 38 Second inclusion of content 39 40 41 42 43 after second content 44

Any idea to make substitution earlier? --Nbrouard 13:10, 30 June 2008 (UTC)

[edit] Complications

The wiki I work on is on the brink of updating from 1.11 to 1.13 (two days from now). We use a huge number of variables, mostly so we can get data in and out of templates. Some of our templates set many variables meanwhile other templates utilize multiple dynamic variables. We use the variables and templates to centralize information and make editing easier on the user. They can utilize a template that accesses many variables and not have to deal with the very ugly logistics of where the data is coming from.

If you need some examples:

• http://wiki.secondlife.com/wiki/Template:LSL_Param - Variable parameters get floating text by taking the variable name and plucking the description from memory. The user need not know where the information is to have it accessible.
• http://wiki.secondlife.com/wiki/Template:LSL_Constants/PrimitiveParams - Utilizes a huge number of templates to set the values of a huge number of variables, the end result is a table and many additional variables that have accumulated in the process.
• http://wiki.secondlife.com/wiki/llSetPrimitiveParams utilizes the previous templates, the actual source of this articles is very light compared to what it is actually doing for the articles.

What can I do so that I literally don't have to rework 50 to 100 templates and thousands of articles? -- BlindWanderer 21:54, 21 October 2008 (UTC)