Question

A form with a checbox using the macro springFormCheckboxes

Asked by: stephaneeybert

Dear all,

I'm using Spring and Velocity to handle a form with a checkbox.

I have two problems, unrelated I guess.

The first and more important one is that if the checkbox is not checked by the user, then the velocity page will display the variable name instead of an empty value, like a blank space.

I'm using the macro springFormCheckboxes for this checkbox.

The second one is that I don't know how to pre populate the checkbox so as to have it checked at page load time.

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Asked On
2008-04-08 at 02:53:22ID23303977
Tags

Java Spring

Topics

eXO Velocity

,

J2EE

,

J2EE Frameworks

Participating Experts
1
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Answers

 

by: stephaneeybertPosted on 2008-04-08 at 02:55:23ID: 21303708

Here is the velocity template:

<form action='#springUrl("/subscription.do")' method='post'>

<br/><br/>#springMessage("subscription.conditions.message") <a href="#springUrl("/html/conditions.html")" title="" target="_blank">#springMessage("subscription.conditions.click")</a>

#set( $agreementOptions = {"1" : "<label for='name'>#springMessage('subscription.agreement.message')</label>"})
<br/><br/>#springFormCheckboxes('subscriptionForm.agreement' $agreementOptions '' 'tabindex="1"')

<br/><br/><input type='submit' value='#springMessage("subscription.continue")' />

</form>

 

by: stephaneeybertPosted on 2008-04-08 at 02:57:46ID: 21303712

Here are the controller methods;

    protected Map referenceData(HttpServletRequest request) throws ServletException {
        Map formData = new HashMap();
        formData.put("agreement", "1");

        return formData;
    }

    protected ModelAndView onSubmit(Object command, BindException errors) throws Exception {
        SubscriptionForm subscriptionForm = (SubscriptionForm) command;

        String agreement = subscriptionForm.getAgreement();

        Map model = new HashMap();
        model.put("agreement", agreement);

        return new ModelAndView(getSuccessView(), "subscription", model);
    }

 

by: stephaneeybertPosted on 2008-04-08 at 03:00:39ID: 21303725

Note that the form works fine when the user checks the checkbox.

But when the user leaves the checkbox empty and submits the form then the success view page will display:

My agreement is: $subscription.agreement

instead of

My agreement is:

 

by: stephaneeybertPosted on 2008-04-08 at 03:01:43ID: 21303728

If seems like velocity does not parse a form variable if it is not bound to a non emtpy velue...

 

by: stephaneeybertPosted on 2008-04-08 at 03:05:02ID: 21303741

Here is the form bean:

public class SubscriptionForm {

    public SubscriptionForm() {
    }

    private String agreement;

    public String getAgreement() {
        return agreement;
    }

    public void setAgreement(String agreement) {
        this.agreement = agreement;
    }

}

 

by: stephaneeybertPosted on 2008-04-11 at 05:16:40ID: 21333413

Thanks for reminding me about the question.

In fact I solved the issue yesterday evening.

Here it is...

I had to change the method used in the controller for one method that offers a reference to the request.

Then I used the utility method to retrieve the value of the boolean parameter, with a default value of false if none was provided.

    protected ModelAndView onSubmit(HttpServletRequest request, HttpServletResponse response, Object command, BindException errors) throws Exception {
        SubscriptionForm subscriptionForm = (SubscriptionForm) command;

        logger.debug("Handling the subscription form.");

        boolean agreement = ServletRequestUtils.getBooleanParameter(request, "agreement", false);
        subscriptionForm.setAgreement(agreement);

        String dateOfBirth = subscriptionForm.getDateOfBirth();
        String bankAccount = subscriptionForm.getBankAccount();
        String maxAmount = subscriptionForm.getMaxAmount();

        Map model = new HashMap();
        model.put("agreement", agreement);
        model.put("dateOfBirth", dateOfBirth);
        model.put("bankAccount", bankAccount);
        model.put("maxAmount", maxAmount);

        return new ModelAndView(getSuccessView(), "subscription", model);
    }

That was all to it.

Regards,

 

by: Vee_ModPosted on 2008-04-11 at 05:33:40ID: 21333543

Closed, 0 points refunded.
Vee_Mod
Experts Exchange Moderator

 

by: stephaneeybertPosted on 2008-04-11 at 05:50:28ID: 21333692

You are very welcome!

20120131-EE-VQP-002

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