How to pass around action outcome to jsf composition? - jsf

Question

I have this JSF snippet which works fine. When the commandbutton is clicked it should reload the page by redirecting to itself.
<p:dataTable value="#{fileModel.files}"
var="file" scrollable="true" scrollHeight="400">
<p:column headerText="#{msgs.lbl_file}">
#{file.name}
</p:column>
<p:column width="150">
<p:commandButton value="#{msgs.lbl_import}"
actionListener="#{fileModel.importFile(file, module)}"
**action="mypage.jsf?faces-redirect=true"**/>
</p:column>
<p:column width="150">
<p:commandLink value="#{msgs.lbl_view}" target="_blank" ajax="false"
actionListener="#{fileModel.view(file)}"/>
</p:column>
</p:dataTable>
Because I want to reuse this in multiple pages I tried to make this JSF template and include it via ui:include. Only thing is that I need the action to be configurable depending on the page it is used in.
<ui:composition xmlns="http://www.w3.org/1999/xhtml"
xmlns:ui="http://xmlns.jcp.org/jsf/facelets"
xmlns:p="http://primefaces.org/ui">
<p:dataTable value="#{fileModel.files}"
var="file" scrollable="true" scrollHeight="400">
<p:column headerText="#{msgs.lbl_file}">
#{file.name}
</p:column>
<p:column width="150">
<p:commandButton value="#{msgs.lbl_import}"
actionListener="#{fileModel.importFile(file, module)}"
**action="#{redirectTo}"**/>
</p:column>
<p:column width="150">
<p:commandLink value="#{msgs.lbl_view}" target="_blank" ajax="false"
actionListener="#{fileModel.view(file)}"/>
</p:column>
</p:dataTable>
</ui:composition>
With the inclusion
<ui:include src="moduleSettingImportDialog.xhtml">
<ui:parameter name="redirectTo" value="mypage.jsf?faces-redirect=true"/>
</ui:include>
The error I get is something like
javax.el.ELException: Not a Valid Method Expression: #{redirectTo}
at
com.sun.el.lang.ExpressionBuilder.createMethodExpression(ExpressionBuilder.java:311)
at
com.sun.el.ExpressionFactoryImpl.createMethodExpression(ExpressionFactoryImpl.java:96)
at
org.jboss.weld.util.el.ForwardingExpressionFactory.createMethodExpression(ForwardingExpressionFactory.java:43)
at
org.jboss.weld.el.WeldExpressionFactory.createMethodExpression(WeldExpressionFactory.java:53)
at
com.sun.faces.facelets.tag.TagAttributeImpl.getMethodExpression(TagAttributeImpl.java:240)
at
com.sun.faces.facelets.tag.jsf.ActionSourceRule$ActionMapper2.applyMetadata(ActionSourceRule.java:107)
at
com.sun.faces.facelets.tag.MetadataImpl.applyMetadata(MetadataImpl.java:81)
A similar error I get when using JSF composite components.
<c:interface>
<c:attribute name="module"/>
<c:attribute name="redirectTo" type="java.lang.String"/>
</c:interface>
<c:implementation rendered="#{systemSettingModel.LOG_REASON_FOR_CHANGES_ISAKTIV}">
<p:dataTable value="#{fileModel.files}"
var="file" scrollable="true" scrollHeight="400">
<p:column headerText="#{msgs.lbl_file}">
#{file.name}
</p:column>
<p:column width="150">
<p:commandButton value="#{msgs.lbl_import}"
actionListener="#{fileModel.importFile(file, cc.attrs.module)}"
**action="#{cc.attrs.redirectTo}"**/>
</p:column>
<p:column width="150">
<p:commandLink value="#{msgs.lbl_view}" target="_blank" ajax="false"
actionListener="#{fileModel.view(file)}"/>
</p:column>
</p:dataTable>
</c:implementation>
#{cc.attrs.redirectTo}: javax.el.ELException:
java.lang.IllegalArgumentException: Cannot convert
multimodulesettings.jsf?faces-redirect=true&includeViewParams=true of
type class java.lang.String to class javax.el.MethodExpression
javax.faces.FacesException: #{cc.attrs.redirectTo}:
javax.el.ELException: java.lang.IllegalArgumentException: Cannot
convert
multimodulesettings.jsf?faces-redirect=true&includeViewParams=true of
type class java.lang.String to class javax.el.MethodExpression at
com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:118)
at javax.faces.component.UICommand.broadcast(UICommand.java:315) at
javax.faces.component.UIData.broadcast(UIData.java:1108) at
javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:790)
at
javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1282)
at
com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:81)
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101) at
com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:198)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:646) at
org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1682)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:344)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214)
at
org.primefaces.webapp.filter.FileUploadFilter.doFilter(FileUploadFilter.java:78)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214)
at
org.glassfish.tyrus.servlet.TyrusServletFilter.doFilter(TyrusServletFilter.java:295)
How to pass a fixed string to a JSF template or composite component that is used in the action attribute of a commandButton?

Answer 1

As a workaround I implemented a JSF bean method that just returns the passed in string like so.
public String echo(String s) {
return s;
}
Then instead of passing the fix string as a parameter to the component it is being passed by an EL expression.
<ui:include src="moduleSettingImportDialog.xhtml">
<ui:parameter name="redirectTo" value="#{jsfBean.echo('mypage.jsf?faces-redirect=true')}"/>
</ui:include>