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I'm using Tiles and I'd like an attribute defined for a page to be readable inside of one of the included subpages as follows:
tiles-definitions.xml:
<definition name="page" template="/WEB-INF/tiles/layout/page.jsp">
<put-attribute name="header" value="/WEB-INF/jsp/_include/header.jsp"/>
<put-attribute name="footer" value="/WEB-INF/jsp/_include/footer.jsp"/>
</definition>
<definition name="tutorial" extends="page">
<put-attribute name="title" value="Tutorial"/>
<put-attribute name="body" value="/WEB-INF/jsp/tutorial.jsp"/>
</definition>
The page.jsp represents a simple page structure:
<html>
<head><title><tiles:getAsString name="title"/></title></head>
<body>
<tiles:insertAttribute name="header"/>
<tiles:insertAttribute name="body"/>
<tiles:insertAttribute name="footer"/>
</body>
</html>
I'm trying to read the title also inside the "header" subpage but I get the following error:
org.apache.tiles.template.NoSuchAttributeException: Attribute 'title' not found.
Here is how I'm trying to access the attribute in header.jsp:
<tiles:getAsString name="title"/>
764
To propagate the title attribute to inner templates you need to add cascade="true" attribute to the title's <put-attribute> tag, like this:
<definition name="tutorial" extends="page">
<put-attribute name="title" cascade="true" value="Tutorial"/>
<put-attribute name="body" value="/WEB-INF/jsp/tutorial.jsp"/>
</definition>
Take care to upgrade the Tiles definition file to 2.1 min, as cascade is available since 2.1.
<!DOCTYPE tiles-definitions PUBLIC "-//Apache Software Foundation//DTD Tiles Configuration 2.1//EN" "http://tiles.apache.org/dtds/tiles-config_2_1.dtd">
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