Right, but it'll render the original request value as the parameter
value, it will then assign the old value ("college") to a new request
value (the parameter key) on the next page.On 1/17/06, Garner, Shawn <[EMAIL PROTECTED]> wrote: > That f:param thing just prints out the value at the end of the link so I > don't think it works with that. > > I'm not sure what t:saveState does exactly so I'll take a look. > > Shawn > > -----Original Message----- > From: Mike Kienenberger [mailto:[EMAIL PROTECTED] > Sent: Tuesday, January 17, 2006 1:21 PM > To: MyFaces Discussion > Subject: Re: Problem hardcoding commandLink action outcome > > In that case, either try the f:param approach or t:saveState the > entire list of values, and reference the link by list index.... > > I'd still try the t:saveState first. > > I'm surprised someone else hasn't jumped in an recommended better > solutions, though :) > > On 1/17/06, Garner, Shawn <[EMAIL PROTECTED]> wrote: > > Yeah, sounds good but this code is in a loop and each few iterations has > > different values for linkPage. > > > > Shawn > > > > -----Original Message----- > > From: Mike Kienenberger [mailto:[EMAIL PROTECTED] > > Sent: Tuesday, January 17, 2006 12:09 PM > > To: MyFaces Discussion > > Subject: Re: Problem hardcoding commandLink action outcome > > > > Hmm. Since you put it that way, maybe not. > > I'm not entirely certain. Try it and see, but I think you might be right. > > > > In that case, I'd recommend using t:saveState on a copy of your > > request variable. > > > > Create a YourBean instance variable to hold a copy of > > "#{param.linkPage}", and add getter/setters for it. > > > > Then use <t:saveState> on #{YourBean.variable} > > > > You can modify the getter to directly read "#{param.linkPage}" > > Add an alternate getter to read the actual value and use this one for your > > link. > > There's probably other (better) ways to do this, but none come to mind > > at present. > > > > You could pass the value as an f:param if you're using a link and not a > > button. > > > > On 1/17/06, Garner, Shawn <[EMAIL PROTECTED]> wrote: > > > So the bean's action method is evaluated during render time and not > after > > > they click on the link? > > > > > > Shawn > > > > > > -----Original Message----- > > > From: Mike Kienenberger [mailto:[EMAIL PROTECTED] > > > Sent: Tuesday, January 17, 2006 11:51 AM > > > To: MyFaces Discussion > > > Subject: Re: Problem hardcoding commandLink action outcome > > > > > > It doesn't need to. The value is resolved during render time. > > > > > > On 1/17/06, Garner, Shawn <[EMAIL PROTECTED]> wrote: > > > > Can you explain what this is actually doing? > > > > How does it know how to resolve ("#{param.linkPage}") after the page > is > > > > rendered? > > > > > > > > Shawn > > > > > > > > -----Original Message----- > > > > From: Mike Kienenberger [mailto:[EMAIL PROTECTED] > > > > Sent: Tuesday, January 17, 2006 10:57 AM > > > > To: MyFaces Discussion > > > > Subject: Re: Problem hardcoding commandLink action outcome > > > > > > > > Yes, you're trying to fight the technology. > > > > > > > > Just do this. > > > > > > > > public class YourBean > > > > { > > > > public String getActionForLinkPage() > > > > { > > > > FacesContext facesContext = > FacesContext.getCurrentInstance(); > > > > String action = > > > > > > > > > > (String)facesContext.getApplication().createValueBinding("#{param.linkPage}" > > > > ).getValue(facesContext); > > > > return action; > > > > } > > > > } > > > > > > > > <h:commandLink action="#{YourBean.actionForLinkPage}" > > > value="#{linkText}"/> > > > > > > > > > > > > On 1/17/06, Garner, Shawn <[EMAIL PROTECTED]> wrote: > > > > > Damn, get an exception with f:attribute. I thought that should > work. > > > > > > > > > > To do <h:commandLink action="college"/> I would have to do a > > choose/when > > > > > condition checking the value of #{linkPage} which can have like 12 > > > > different > > > > > values. Seems like a messy solution to me. > > > > > > > > > > Shawn > > > > > > > > > > -----Original Message----- > > > > > From: Garner, Shawn > > > > > Sent: Tuesday, January 17, 2006 10:29 AM > > > > > To: 'MyFaces Discussion' > > > > > Subject: RE: Problem hardcoding commandLink action outcome > > > > > > > > > > How about using the f:attribute tag for name="action"? > > > > > > > > > > Shawn > > > > > > > > > > -----Original Message----- > > > > > From: Mike Kienenberger [mailto:[EMAIL PROTECTED] > > > > > Sent: Tuesday, January 17, 2006 10:21 AM > > > > > To: MyFaces Discussion > > > > > Subject: Re: Problem hardcoding commandLink action outcome > > > > > > > > > > You are correct. It's trying to resolve it as a method binding. > > > > > > > > > > You need to either use > > > > > > > > > > <h:commandLink > > > action="#{yourBean.yourMethodReturningCollegeAsAString}"/> > > > > > > > > > > or > > > > > > > > > > <h:commandLink action="college"/> > > > > > > > > > > The attribute "action" takes only a string literal or a method > binding > > > > > that returns a String. It does not take a value binding that > > > > > evaluates to a String. So if you need the action target to be > > > > > variable, you need to write java code to perform this logic. > > > > > Possibly you could use some kind of JSP EL expression instead of a > JSF > > > > > EL expression, but I wouldn't recommend this approach. > > > > > > > > > > On 1/17/06, Garner, Shawn <[EMAIL PROTECTED]> wrote: > > > > > > > > > > > > > > > > > > > > > > > > I'm trying to hardcode the action to "college" which is in the > > > linkPage > > > > > > request scope variable. > > > > > > > > > > > > I think it's trying to resolve it as a bean action or something > > > instead > > > > of > > > > > > an outcome. > > > > > > > > > > > > Can somebody help me with how to do this. > > > > > > > > > > > > > > > > > > > > > > > > linkPage: <h:outputText value="#{linkPage}"/><br> > > > > > > > > > > > > <h:commandLink action="#{linkPage}" value="#{linkText}"/> > > > > > > > > > > > > > > > > > > > > > > > > This prints out: > > > > > > > > > > > > > > > > > > > > > > > > linkPage: college > > > > > > Modify Your Answer > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > I want it to resolve as if I put in <h:commandLink > action="college" > > > > > > value="Modify Your Answer"/> > > > > > > > > > > > > > > > > > > > > > > > > However when I click on the link I get: > javax.faces.FacesException: > > > > Error > > > > > > calling action method of component with id _id1:_id15 > > > > > > at > > > > > > > > > > > > > > > > > > > > > org.apache.myfaces.application.ActionListenerImpl.processAction(ActionListen > > > > > erImpl.java:74) > > > > > > at > > > > > > javax.faces.component.UICommand.broadcast(UICommand.java:106) > > > > > > at > > > > > > > > > javax.faces.component.UIViewRoot._broadcastForPhase(UIViewRoot.java:90) > > > > > > at > > > > > > > > > javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:164) > > > > > > at > > > > > > > > > > > > > > > > > > > > > org.apache.myfaces.lifecycle.LifecycleImpl.invokeApplication(LifecycleImpl.j > > > > > ava:316) > > > > > > at > > > > > > > > > > > > org.apache.myfaces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:86) > > > > > > at > > > > > > javax.faces.webapp.FacesServlet.service(FacesServlet.java:106) > > > > > > at > > > > > > jrun.servlet.ServletInvoker.invoke(ServletInvoker.java:91) > > > > > > at > > > > > > jrun.servlet.JRunInvokerChain.invokeNext(JRunInvokerChain.java:42) > > > > > > at > > > > > > > > > > > > jrun.servlet.JRunRequestDispatcher.invoke(JRunRequestDispatcher.java:259) > > > > > > at > > > > > > > > > > > > jrun.servlet.ServletEngineService.dispatch(ServletEngineService.java:541) > > > > > > at > > > > > > jrun.servlet.http.WebService.invokeRunnable(WebService.java:172) > > > > > > at > > > > > > > > > > > > > > > > > > > > > jrunx.scheduler.ThreadPool$ThreadThrottle.invokeRunnable(ThreadPool.java:428 > > > > > ) > > > > > > at > > > > > > jrunx.scheduler.WorkerThread.run(WorkerThread.java:66) > > > > > > Caused by: javax.faces.el.ReferenceSyntaxException: > > > > > > Expression not a valid method binding: #{linkPage} > > > > > > at > > > > > > > > > > > > > > > > > > > > > org.apache.myfaces.el.MethodBindingImpl.resolveToBaseAndProperty(MethodBindi > > > > > ngImpl.java:186) > > > > > > at > > > > > > > > > > > > org.apache.myfaces.el.MethodBindingImpl.invoke(MethodBindingImpl.java:114) > > > > > > at > > > > > > > > > > > > > > > > > > > > > org.apache.myfaces.application.ActionListenerImpl.processAction(ActionListen > > > > > erImpl.java:63) > > > > > > ... 13 more > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > Shawn D. Garner > > > > > > > > > > > > Software Developer > > > > > > > > > > > > CASD EAI I > > > > > > > > > > > > Internet Development > > > > > > > > > > > > > > > > > > > > > > > > Email: [EMAIL PROTECTED] > > > > > > > > > > > > Work: (319) 665-7796 > > > > > > > > > > > > Cell: (319) 480-4409 > > > > > > > > > > > > > > > > > > > > > > > > Pearson Government Solutions > > > > > > > > > > > > 2450 Oakdale Blvd > > > > > > > > > > > > Coralville, IA 52241 > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > **************************************************************************** > > > > > > > > > > > > This email may contain confidential > > > > > > material. If you were not an intended recipient, > > > > > > Please notify the sender and delete all copies. > > > > > > We may monitor email to and from our network. > > > > > > > > > > > > > > > > > > > > > > > > > > > *************************************************************************** > > > > > > > > > > > > > > > > > > > > > > > > > > **************************************************************************** > > > > > > > > > > This email may contain confidential material. > > > > > If you were not an intended recipient, > > > > > Please notify the sender and delete all copies. > > > > > We may monitor email to and from our network. > > > > > > > > > > > > > > > **************************************************************************** > > > > > > > > > > > > > > > > > > > > **************************************************************************** > > > > > This email may contain confidential material. > > > > > If you were not an intended recipient, > > > > > Please notify the sender and delete all copies. > > > > > We may monitor email to and from our network. > > > > > > > > > > > > > > > **************************************************************************** > > > > > > > > > > > > > > > > > > > **************************************************************************** > > > > This email may contain confidential material. > > > > If you were not an intended recipient, > > > > Please notify the sender and delete all copies. > > > > We may monitor email to and from our network. > > > > > > > > > > **************************************************************************** > > > > > > > > > > > > > **************************************************************************** > > > This email may contain confidential material. > > > If you were not an intended recipient, > > > Please notify the sender and delete all copies. > > > We may monitor email to and from our network. > > > > > > **************************************************************************** > > > > > > > > **************************************************************************** > > This email may contain confidential material. > > If you were not an intended recipient, > > Please notify the sender and delete all copies. > > We may monitor email to and from our network. > > > **************************************************************************** > > > > **************************************************************************** > This email may contain confidential material. > If you were not an intended recipient, > Please notify the sender and delete all copies. > We may monitor email to and from our network. > **************************************************************************** >
