3 Replies Latest reply: Apr 23, 2012 11:50 PM by gebuh RSS

How do you use s:selectItems on List of String?

Nicholas Cruz Newbie

Hi,

   I am using  seam 2.2.2.Final on JBoss AS 5. I am working on a multi-page wizard.On my first page, user will be able to enter several business names separated by a new line on a textarea.

        {code:xml}

              <s:decorate id="businessNameTextAreaField" template="layout/edit.xhtml">

                        <ui:define name="label">Business Names</ui:define>

                        <h:inputTextarea id="businessNameTextArea"

                                       cols="80"

                                       rows="3"

                                   required="true"

                                      value="#{businessNameHome.instance.businessNameTextArea}"/>

                </s:decorate>

       {code}

 

Upon submission of the page, the system parses the inputed value and splits it into a list of strings

      {code}

     

          public String checkBusinessNames(){

                String businessNameTextArea = this.getInstance().getbusinessNameTextArea();

                String[] businessNameTextAreaArray = businessNameTextArea.split("\\n");

               

                List<SelectItem> businessNameChoices = new ArrayList<SelectItem>();

                               

                for(String businessNameText: businessNameTextAreaArray){           

                    businessNameChoices.add(new SelectItem(businessNameText));

                }

               

                this.getInstance().setBusinessNameChoices(businessNameChoices);

                return "valid";

          }

    {code}

 

The user is then asked to select from the list of valid business names to register

    {code:xml}

<s:decorate id="businessNameRegisterListField" template="layout/edit.xhtml">

     <ui:define name="label">Business Name</ui:define>

     <h:selectManyCheckbox  value="#{businessNameHome.instance.selectedbusinessName}" layout="pageDirection" immediate="true" >

     <s:selectItems value="#{businessNameHome.instance.businessNameChoices}" var="bn" label="#{bn.label}" />                                                                                      </h:selectManyCheckbox>                            

      </s:decorate>

{code}

 

selectedbusinessName is of type String while businessNameChoices is of List<SelectItem>

 

Upon submission of the page, what is submitted as business names is something like this: javax.faces.model.SelectItem@135aa7c

 

I have tried putting an itemValue on the s:selectItems but I get another error which is "Value is not valid"

  {code:xml}  <s:selectItems value="#{businessNameHome.instance.businessNameChoices}" var="bn" label="#{bn.label}" itemValue="#{bn.value}"/>  {code}

 

Tried to use <s:convertEntity> but gets a NumberFormat exeption

 

I have also tried to create my own converter

{code}

public class BusinessNameBeanConverter implements javax.faces.convert.Converter {

       

            @Override

            public Object getAsObject(FacesContext context, UIComponent cmp, String value) {

                // TODO Auto-generated method stub

                System.out.println("getAsObject "+value);

                return value;

            }

       

            @Override

            public String getAsString(FacesContext context, UIComponent cmp, Object value) {

                // TODO Auto-generated method stub

                System.out.println("getAsString "+((SelectItem)value).getValue());

                return ((SelectItem)value).getValue();

            }

       

        }

   

{code}

 

but I still get the same "Value is not valid" error.

 

I don't know what to do anymore. Please help.

 

 

 

Please help! Thanks,

NIicholas

  • 1. Re: How do you use s:selectItems on List of String?
    gebuh Newbie

    I'm a little confused how you're doing this, but shouldn't your businessNameChoices be a list of Strings and not SelectItems?

    Change the list type and try this( it's a string, not an object so it'll print out the actual name)

    <s:selectItems value="#{businessNameHome.instance.businessNameChoices}" var="bn"/>
    
  • 2. Re: How do you use s:selectItems on List of String?
    Nicholas Cruz Newbie

    Hi Beth,

     

      Thanks. I have made the changes but I still get a "Value is not valid" error. It says here https://community.jboss.org/wiki/SeamProblemsFAQ that it should be in a long running conversation but it is already in a long running conversation as seen by the status message on the page "Conversation: id = 5, long running". If I check only on one checkbox, it submits successfully with the correct data. But if I check multiple boxes, it returns that error.

     

    Thanks!

  • 3. Re: How do you use s:selectItems on List of String?
    gebuh Newbie

    Here's your component:

    <s:decorate id="businessNameRegisterListField" template="layout/edit.xhtml">
         <ui:define name="label">Business Name</ui:define>
         <h:selectManyCheckbox  value="#{businessNameHome.instance.selectedbusinessName}" layout="pageDirection" immediate="true" >
         <s:selectItems value="#{businessNameHome.instance.businessNameChoices}" var="bn" label="#{bn.label}" />                                                                                      
         </h:selectManyCheckbox>                             
     </s:decorate> 
    

     

    selectManyCheckbox value is what you're going to set - so your choices will populate this value

    selectItems value is the list your selecting from

     

    It appears that selectedbusinessName is of type String, but it should be a list<String>.

     

    Can you post the methods (formatted please, the raw code is hard to read) from your backing bean?

     

     

     

    Nicholas Cruz wrote:

     

    Hi Beth,

     

      Thanks. I have made the changes but I still get a "Value is not valid" error. It says here https://community.jboss.org/wiki/SeamProblemsFAQ that it should be in a long running conversation but it is already in a long running conversation as seen by the status message on the page "Conversation: id = 5, long running". If I check only on one checkbox, it submits successfully with the correct data. But if I check multiple boxes, it returns that error.

     

    Thanks!