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From "Stephen Solka (JIRA)" <j...@apache.org>
Subject [jira] Created: (JSPWIKI-114) VariableManger does not check "RealPage" for variables during variable lookup
Date Wed, 26 Dec 2007 18:04:44 GMT
VariableManger does not check "RealPage" for variables during variable lookup
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                 Key: JSPWIKI-114
                 URL: https://issues.apache.org/jira/browse/JSPWIKI-114
             Project: JSPWiki
          Issue Type: Bug
          Components: Core & storage
    Affects Versions: 2.6.0, 2.4.104, 2.6.1, 2.8, 3.0
            Reporter: Stephen Solka
            Priority: Minor


When one sets a page variable jspwiki attaches that variable to the realpage variable which
exists in the engine's context. But when looking up a variable reference only page is checked
for that variable. The result is when realpage and page differ all previously defined variables
vanish from scope. This can be seen when defining a variable then using the insertpage plugin.
the inserted page can not see any variables defined in the inserter page and thus returns
a variable not found error. 

Initial Conversation on HowToUseAVariable which lead to bug:
========
Lets pretend the code on one page called TestPage is

Hello [{$tname}]

Then the code for another page called Tester is

[{SET tname='Stephen'}]
[{InsertPage page='TestPage'}]

It doesnt seem to be working as I would expect. I would expect the output to be

Hello Stephen

but instead I get

Hello No such variable: No variable tname defined.

What am I doing wrong? Why is InsertPage parsing the content of the inserted page prior to
insertion? --Stephen

The tname variable is referring to the page variable called "tname" on page "Tester". Variables
are always interpreted in the context of the including page, not the included page. This allows
you to e.g. create templates which you can insert and control with page variables.

-- JanneJalkanen

If variables are interpreted in the context of the including page why does Tester claim not
to know what tname is when inserting a page that references that variable? Controlling a inserted
page through page variables is EXACTLY what I am trying to do. But if all page variables defined
in the including page lose scope prior to insertion then I fail to see how this is possible?
Is it possible to directly manipulate the variables for a page prior to insertion?

-- Stephen 

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