RE: Question on the ActionForm design for dynamic data?

Joyce Tang Mon, 28 May 2001 22:47:58 -0700

Title: Question on the ActionForm design for dynamic data?

I have been struggling with this problem for a while.

I used the way Jeff recommended and made the application working, however, because I am not using the struts taglib displaying the collection data, there is no sense to put that collection in the form. So I do validation and populating the session data in the action. I don't like that. I am pretty much sure there should be a way to use nested form in struts. So that I can use something like following to display the contributors:

<logic:iterate id="contributors" name="plan" property="contributors">

</logic:iterate>

I tried couple of ways. No one works so far.

One of the approaches I tried is to have the a PlanForm and a ContributorForm. And one of the properties/fields in PlanForm is ContributorForm[]. I think it is a way to do it. But I don't know how.

Can someone point me to some solution. I really appreciate.

Joyce

-----Original Message-----
From: Joyce Tang [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, May 23, 2001 12:05 AM
To: [EMAIL PROTECTED]
Subject: RE: Question on the ActionForm design for dynamic data?

Why should not the reset() be used? Isn't it called automatically, anyways? Such as when the validation of the form fails?

-----Original Message-----
From: Jeff Trent [mailto:[EMAIL PROTECTED]]
Sent: Sunday, May 20, 2001 6:12 AM
To: [EMAIL PROTECTED]
Subject: Re: Question on the ActionForm design for dynamic data?

(1) Have a Vector / Collection of contributors (ie. getContributors()) belonging to your form. Inside that function, check to see if you need more rows by using code similar to the following:

    public Vector getCustomerContacts()
    {
        CustomerContact lastCustomerContact = (CustomerContact)this.customerContacts.lastElement();
        if (!lastCustomerContact.isEmpty())                                            // is this slot being used?
            this.customerContacts.addElement(new CustomerContact());    // always have one available slot at the end of the matrix

        return this.customerContacts;
    }

(2) Do not use the reset() method.

(3) On your JSP, use code like this:

    <% int i = 0; %>
    <logic:iterate id="customerContact" name="adminUpdateProfileForm" property="customerContacts">
       <tr>
        <td class="smallFont"><input type='text' name="customerContact[<%= i %>].contactName" value="<%= ((com.domain.project.CustomerContact)customerContact).getContactName() %>"></td>
        <td class="smallFont"><input type='text' name="customerContact[<%= i %>].contactTitle" value="<%= ((com.domain.project.CustomerContact)customerContact).getContactTitle() %>"></td>
        <td class="smallFont"><input type='text' name="customerContact[<%= i %>].contactPhone" value="<%= ((com.domain.project.CustomerContact)customerContact).getContactPhone() %>"></td>
       </tr>
       <% i++; %>
    </logic:iterate>

(4) Have a button on the form "Add more rows" in which case the form posts to itself and will cause a new row to be added at the bottom of the grid.

Hope this help,

Jeff

----- Original Message -----

From: Joyce Tang

To: [EMAIL PROTECTED]

Sent: Saturday, May 19, 2001 11:28 PM

Subject: Question on the ActionForm design for dynamic data?

Here is the situation.

I am developing a system to maintain a contribution plan. I need to input the plan information first and add unlimited number of contributors, specifying each share of the plan. So there will be a page with contribution plan information and a list of all the contributors. The information you can edit on this page is the percentage of share of each contributor. Validation rules are: share need to add up to 100 and share figure is an integer between 0 and 100.   Since the number of contributors is unknown in advance, how should I design the ActionForm?

Thanks a lot,

Joyce

RE: Question on the ActionForm design for dynamic data?

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