You need to use Map backed properties if you want to get this to work. Take a look at this example and you should be able to adapt it.
http://www.vitarara.org/cms/struts_2_cookbook/updating_a_list_of_domain_entities Basically your properties are a map with id and Question objects and then struts can repopulate your answers in the correct question object in the map. It works very nice. I used it for a page that had a random number of file uploads. HTH Radu -----Original Message----- From: Jon Pearson [mailto:jon.pear...@sixnet.com] Sent: May 4, 2009 8:18 AM To: Struts Users Mailing List Subject: RE: Radio button grouping in Struts 2 > Hi all, > > I have a page which iterates over a collection of questions, > with each question having a number of radio buttons which can > be used to select the answer to that question. For example: > > Question 1: Unanswered O Yes O No O > Question 2: Unanswered O Yes O No O > etc.. > > If the question has already been answered previously when the > pages loads then the appropriate Yes/No is selected; > otherwise Unanswered is selected. > I've got this working fine using the following: > > class Question { > long id; > String name; > String answer; > } > > class ViewQuestionsAction { > List<Question> questions; > Map<String,String> answersMap; // key == value at the > moment because didn't seem to work with int keys > > <s:set name="answersMap" value="%{answersMap}"/> <s:iterator > value="questions"> > <s:property value="name"/> > <s:radio name="%{id}" value="%{answer}" > list="#answersMap"/> </s:iterator> > > I need the name=%{id} bit so that I can group the radio > buttons per question. And this is the problem, because then I > can't find a way for when you submit the form to receive an > array of the selected buttons into the target action. The > above works on page load (grouped nicely), but on submit I > get all kinds of OGNL errors complaining about long id > invalid expressions (understandable I guess). But when I > choose a sensible name, for example: > > <s:radio name="responses" value="%{answer}" list="#answersMap"/> > > I get an array of selected buttons in the target action's > responses property on submit but the radio grouping isn't > working - you can only select on radio button from the whole > page because they all share the same name element in the > HTML. I then tried: > > <s:radio id="ViewQuestions_responses" name="%{id}" value="%{answer}" > list="#answersMap"/> > > To try and force struts to set the responses property, but it > still tries to set the property from the name. Which makes me > think: if struts always uses the name to set the property, > and the browser always groups the radio buttons based on the > same name, is what I'm trying to do even possible?!?! > > Any help gratefully received :) > > Many thanks > James > > > > > -- > View this message in context: > http://www.nabble.com/Radio-button-grouping-in-Struts-2-tp2336 > 5502p23365502.html > Sent from the Struts - User mailing list archive at Nabble.com. > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: user-unsubscr...@struts.apache.org > For additional commands, e-mail: user-h...@struts.apache.org > You could, instead of relying on Struts2 to automatically call the proper set* routines on submit, implement Preparable and manually parse the results in the prepare() function, which is called BEFORE any set* functions. ~Jonathan --------------------------------------------------------------------- To unsubscribe, e-mail: user-unsubscr...@struts.apache.org For additional commands, e-mail: user-h...@struts.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: user-unsubscr...@struts.apache.org For additional commands, e-mail: user-h...@struts.apache.org
