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Arvind1Arvind1 

Wrapper class problem

Hi All,

 

I have a custom object called questions. There is an object called Answers which has a lookup to Questions object.

 

In a visualforce page datatable, I want to display the questions and next to that all the related answers of that question as radio buttons.

 

But I am not able to identify how do i relate the answers to the questions in my wrapper class. Here is the code I am using

public class SurveyController_new {
Invitation__c inv;
Invitation__c inv1;
List<Question__c> questions = new List<Question__c>();
List<Answers__c> answers = new List<Answers__c>();
Set<id> questionids = new Set<id>();
Map<Id,Answers__c> ans1map = new Map<Id,Answers__c>();
Map<Id,List<Answers__c>> ansmap = new Map<Id,List<Answers__c>>();
Public List<wrpProduct> ProductPricewrp=new List<wrpProduct>(); 

    public SurveyController_new(ApexPages.StandardController controller) {
        inv=(Invitation__c)controller.getRecord();
    }
List<String> anss = new List<String>();
    public void questionsanswers(){
            inv1=[select id,Survey__c from Invitation__c where id=:inv.id];
        questions = [select Question_Description__c,Type__c from Question__c where Survey__c=:inv1.Survey__c];
        for(Question__c qnids:questions)
            questionids.add(qnids.id);
        answers = [select Name,Question__c from Answers__c where Question__c in :questionids];
       for(Answers__c anslist:answers)
        ans1map.put(anslist.Question__c,anslist);
        system.debug('map1'+ans1map);
        for(Question__c qnids1:questions){
            List<Answers__c> anslist12 = new List<Answers__c>();
            system.debug('list'+ans1map.get(qnids1.Id));
            anslist12.add(ans1map.get(qnids1.Id));
            ansmap.put(qnids1.id,anslist12);
          } 
        for(Question__c qns:questions)
            ProductPricewrp.add(new wrpProduct(qns,ansmap.get(qns.Id)));
        
    }
        Public List<wrpProduct> getwrapperProducts(){
       return ProductPricewrp;
    }
    
    Public class wrpProduct{
      
       Public Response__c getprdtLine(){
         return prdtln;
       }
       Response__c prdtln;
      List<Selectoption> ansoption = new List<Selectoption>();
       public List<Selectoption> getansoption(){
       return ansoption;
       }
       
       public Question__c questionobj{get;set;}
       
       public wrpProduct(Question__c qn,List<Answers__c> Answeroptions){
           system.debug('options'+Answeroptions);
         this.questionobj=qn;
         prdtln=new Response__c();
                for(Integer i=0;i<Answeroptions.size();i++)
             ansoption.add(new selectoption(Answeroptions[i].Name,Answeroptions[i].Name));
            }
    }

    
}
 When I use this code, I am getting only one answer option next to the question, since the key in map is unique. I can 
do this if I write the answer in the question for loop. Since it may hit the query limit, I want to avoid that. 
Any suggestion on this will be helpful.
 
Thanks
Arvind 


bob_buzzardbob_buzzard
I'm guessing that the problem is around this section of code:
 
 
        answers = [select Name,Question__c from Answers__c where Question__c in :questionids];
       for(Answers__c anslist:answers)
        ans1map.put(anslist.Question__c,anslist);
 
Which will overwrite each entry that already exists for a question.  The answer is to change your map to contain a list of answers and add each time, as follows:
 

Map<Id,List<Answers__c>> ans1map = new Map<Id,List<Answers__c>>();

answers = [select Name,Question__c from Answers__c where Question__c in :questionids];

  for(Answers__c anslist:answers)
  {
      List<Answers_c> theList=ans1map.get(anslist.Question__c);
      if (null==theList)
      {
        theList=new List<Answers_c>();
        ans1map.put(anslist.Question__c,theList);
      }

      theList.add(anslist);
   }
 
 
 That way you will have a list of answers associated with each product id and can take it from there. 
 
 
Message Edited by bob_buzzard on  01-22-2010 06:36 AM


Arvind1Arvind1
Thanks Bob. It worked great.
 
Thanks
Arvind