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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