Hi Kamna,
In the past few days, I have been looking a lot at the Velocity templates
> and the Xwiki core code.
> There are a few things I am not able to understand.
>
> 1) Where is $msg variable defined in the core code? I see it a lot in the
> scripts. Is it a hashtable for messages. Where is it defined?
$msg is the code used to get translation messages. Basically when you write
$msg.translation or $msg.get("translation"), upon parsing of the page by the
Velovity parser the engine looks into the translations file. if it finds
something such as translation=NiceTranslation, it turns $msg.translation
into NiceTranslation when rendering the page.
2) what is referred to by "xpage","xredirect"
>
> For eg. in the following mehtod from Utils.java
>
> public static String getPage(XWikiRequest request, String defaultpage)
> {
> String page;
> page = request.getParameter("xpage");
> if ((page == null) || (page.equals(""))) {
> page = defaultpage;
> }
> return page;
> }
>
> does this mean, that if a page with that name exists in the template
> directory(xpage), it will be returned. But, what is defaultpage?
>
They are used to return specific actions when ?xpage= is appended to a page
URL . For instance, /xwiki/bin/view/Main/WebHome?xpage=plain will render the
content witout any style, /xwiki/bin/view/Main/WebHome?xpage=print will
render the page in print mode...
Similarly, ?xredirect takes another url as a parameter and sends the viewer
to the given page. When you try to access a page you cannot see, it's the
action used to send you back to the page from the login page.
> Currently the login page does not show any error if the provided
> credentials
> are wrong. (authentication with LDAP)
> A look at the LoginErrorAction.java in the Web package revealed that it
> returns the same string as the LoginAction - "login"
> so, if I created anither loginerror.vm in teh templates folder and
> returned
> "loginerror" in the render function of this LoginErrorAction.java class,
> it
> would run the new script.
>
> But, at this stage I do not know what would be the content of the
> loginerror.vm....
> #xwikimessageboxstart($msg.get("error") $msg.get("notallowed")) - would
> this work?
Not quite sure... Though trial & error sounds like a nice tactic ;-)
Guillaume
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