I found two others links that can help to my question http://www.gorerle.com/vlab-wiki/index.php?title=JSF http://www.jsftutorials.net/jsfNavigation/jsf-login-navigation-redirect.html
But I don´t think that they were clear, even the second link have a note that says: *Note: This is only an example that shows how you can use navigation handler decorator. Do NOT use it as a ready-to-use solution for login facility. Use Phase Listener instead.* I will search for a Phase Listener example, but still is not clear which is the better solution and how to implemented it. Thanks! On Dec 5, 2007 11:10 AM, daniel ccss <[EMAIL PROTECTED]> wrote: > Thanks Both of you, i was out for a while. > > Ok I think this is a common question, and not a simple question as I wrote > in my subject, something similar was talked in this thread: > > http://forum.java.sun.com/thread.jspa?threadID=690288&messageID=4017603 > > I think the NavigationHandler is the easier and nice solution, but I have > some questions about it beacause I implemented it but nothing happens: > > > init() > { > if(userInSession){ > do the load of the controls > }else{ > FacesContext.getCurrentInstance > ().getApplication().getNavigationHandler(). > handleNavigation(FacesContext.getCurrentInstance(),null,"* > showLoggin*"); > > } > } > > > 1- Is necesary to use shale-view? > 2- The third argument is a navigation rule that is in the faces-config.xml > ?? > 3- Can anyone give a sample code of how to do this? I think its not clear > how to handdle this, and many people will use it if is clear :). > > > Thanks > > > On Nov 23, 2007 11:40 PM, Gerhard Petracek < [EMAIL PROTECTED]> > wrote: > > > one more supplement to complete the picture of the last two mails - i > > missed to add these details at my last mail *sorry* for that... > > > > in my previous mail i wrote that the NavigationHandler approach doesn't > > solve your problem, because the init-method gets invoked before. i missed to > > add some details to complete this comment because of quick answering. > > normally it works very well if you navigate to the login page before you use > > the bean - which is the case if you use the whole bean only within your > > target page(s) (where a successful login is required) (-> the init-method > > isn't invoked if you navigate to the login page) -> it's a valid approach as > > i mentioned it in my first mail. > > > > (i thought about possible scenarios where you have a combination of: a > > login isn't required for all pages - as it seems to be the case within our > > application - and if you use the bean before the NavigationHandler gets > > invoked - and the user hasn't logged in -> in such a special case the > > init-method recognizes that the user isn't logged in but the navigation to > > the login page occurs later. i don't know your implementation details and if > > such a scenario would lead to a side effect within your implementation or > > not - so i skip details here.) > > > > summarized: also the NavigationHandler approach works for common cases ( > > e.g. there is no problem if you navigate to the login page before you > > have the chance to use the bean) - in that case it also fits into my summary > > of the first mail. > > > > > > regards, > > gerhard > > > > > > > > 2007/11/24, Gerhard Petracek < [EMAIL PROTECTED]>: > > > > > > hello daniel, > > > > > > some additional information: > > > just to avoid misunderstandings - the summary of the suggestion has no > > > reference to the NavigationHandler approach because in that case your > > > init-method would get executed before. > > > > > > generally spoken: to implement a custom NavigationHandler is just an > > > alternative approach (in your case it doesn't solve your problem). > > > if someone is interested in this approach you will find an example at: > > > http://www.jsftutorials.net/jsfNavigation/jsf-login-navigation-redirect.html > > > > > > (i didn't look at the details of this specific solution - it's just an > > > example... - and they also suggest to use a PhaseListener) > > > > > > regards, > > > gerhard > > > > > > > > > > > > 2007/11/24, Gerhard Petracek < [EMAIL PROTECTED]>: > > > > > > > > hello daniel, > > > > > > > > i would like to suggest other solutions. > > > > > > > > i think you are familiar with the common ways of handling navigation > > > > (summarized - e.g. if you use the "from-outcome" approach an > > > > action-method returns the outcome or you use a static string within your > > > > page - with this approach only these outcomes are used for navigation) > > > > -> if your "init"-method is not an action method (it doesn't sound > > > > like one) - you should consider alternative solutions. > > > > > > > > --- just a general information before we start --- > > > > with this additional information i don't refer to the solution you > > > > are having in mind! > > > > basically you can manually navigate e.g. with: > > > > > > > > FacesContext.getCurrentInstance().getApplication().getNavigationHandler().handleNavigation( > > > > ... ); > > > > or with: > > > > > > > > FacesContext.getCurrentInstance().getExternalContext().redirect( > > > > ... ); > > > > > > > > however, be careful with these mechanisms - they don't work at any > > > > point of your application and you risk to "break" your application if > > > > you > > > > misuse these mechanisms. > > > > --- > > > > > > > > if you don't like to use security extensions such as Acegi you have > > > > to implement custom mechanisms to provide login pages and to avoid > > > > initial > > > > actions within your bean. in that case i would suggest more generic > > > > solutions - e.g. a custom PhaseListener or a custom > > > > NavigationHandler. > > > > > > > > to summarize my suggestion: use/implement a mechanism which takes > > > > place before your init-method gets executed. > > > > > > > > regards, > > > > gerhard > > > > > > > > > > > > > > > > 2007/11/23, daniel ccss <[EMAIL PROTECTED]>: > > > > > > > > > > I have a simple question > > > > > > > > > > I have been working with myfaces-tomahawk for 6 months, great, but > > > > > I > > > > > have a question, how to call an 'action' from the backing bean, > > > > > until > > > > > today I have called all my action methods from the JSP page, on > > > > > the > > > > > onClick, onChange, etc events, but now I need to call an action > > > > > from > > > > > another method in my backing bean. > > > > > > > > > > I have an init method in my backing bean that ask if the user is > > > > > in > > > > > session, if yes all the load of the combos etc is make, if not I > > > > > need > > > > > to call a method that returns to the login page by returning the > > > > > navigation rule like this: > > > > > > > > > > //init > > > > > { > > > > > if(userInSession){ > > > > > do the load of the controls > > > > > }else{ > > > > > returnToLogin(); > > > > > } > > > > > } > > > > > > > > > > private String returnToLogin(){ > > > > > return "login"; > > > > > } > > > > > > > > > > and in faces-config.xml i have the navigation rule: > > > > > > > > > > <navigation-rule> > > > > > <from-view-id>.... > > > > > > > > > > <navigation-case> > > > > > <from-outcome>login</from-outcome> > > > > > <to-view-id>/JSP/Login.jsp</to-view-id> > > > > > </navigation-case> > > > > > .... > > > > > > > > > > But nothing happens, this type of call can be done?, or only I can > > > > > > > > > > call an action that returns to a navigation rule from the JSP, if > > > > > so, > > > > > how can I send the person to the login page in case he copy the > > > > > url in > > > > > the browser and never pass for the login page. > > > > > > > > > > Thanks all > > > > > > > > > > > > > > > > > > > > > -- > > > > > > > > http://www.irian.at > > > > > > > > Your JSF powerhouse - > > > > JSF Consulting, Development and > > > > Courses in English and German > > > > > > > > Professional Support for Apache MyFaces > > > > > > > > > > > > > > > -- > > > > > > http://www.irian.at > > > > > > Your JSF powerhouse - > > > JSF Consulting, Development and > > > Courses in English and German > > > > > > Professional Support for Apache MyFaces > > > > > > > > > > > -- > > > > http://www.irian.at > > > > Your JSF powerhouse - > > JSF Consulting, Development and > > Courses in English and German > > > > Professional Support for Apache MyFaces > > > >
