CODEWITHSUNDEEP
grailsgsp
Steve Hole
Steve Hole

Reputation: 358

GSP variables set in layout not visible in pages

I have some GSP variables set in the "main" layout file of my Grails application (included below). The values of these variables don't appear to be accessible in the GSP pages that are rendered by the sitemesh. Also, they are not visible in any templates that are rendered by the tag. I have tried setting the scope="request" (see code) below, but that doesn't appear to make any difference. I'm clearly not understanding the scoping rules for GSP variables.

Can anyone clarify how GSP variables are scoped and make a recommendation on how I can communicate them from the layout all the way down to templates (if I can at all).

<!DOCTYPE html>
<%-- <html lang="${org.springframework.web.servlet.support.RequestContextUtils.getLocale(request).toString().replace('_', '-')}"> --%>
<html lang="${session.'org.springframework.web.servlet.i18n.SessionLocaleResolver.LOCALE'}">

<head>
    <title><g:layoutTitle default="${meta(name:'app.name')}" /></title>

    <meta charset="utf-8">
    <meta name="viewport"       content="width=device-width, initial-scale=1.0">
    <meta name="description"    content="">
    <meta name="author"         content="">

    <asset:javascript src="bootstrap.js" />
    <theme:load />
    <asset:javascript src="application.js" />
    <asset:stylesheet src="application.css" />
    <asset:link rel="shortcut icon" href="favicon.ico" type="image/x-icon" />

    <g:layoutHead />

    <%-- Defineform body layout column dimensions. These values are used by Bootstrap based forms to 
         layout using configured column widths and offsets. --%>
    <g:set var="labelWidth" value="${grailsApplication.config.ark.layout.labelWidth ?: 'col-sm-3'}" scope="request" />         
    <g:set var="controlWidth" value="${grailsApplication.config.ark.layout.controlWidth ?: 'col-sm-4'}" scope="request" />
    <g:set var="controlOffset" value="${grailsApplication.config.ark.layout.controlWidth ?: 'col-sm-offset-3'}" scope="request" />

    <%-- For Javascript see end of body --%>
</head>

<body>
    <g:render plugin="arkUi" template="/layouts/menu/navbar"/>
    <g:render plugin="arkUi" template="/layouts/content"/>
    <g:render plugin="arkUi" template="/layouts/footer"/>

    <!-- Include deferred Javascript files and other resources -->
    <asset:deferredScripts/>
</body>

</html>

Upvotes: 0

Views: 590

Answers (1)

Ian Roberts
Ian Roberts

Reputation: 122424

The issue here is that Grails first parses the target GSP page to (among other things) determine which layout to use, then parses the layout GSP and combines them. So the layout can see variables you set in the page but not vice-versa.

Upvotes: 2

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