Updation using iterate tag

[Sa...@lntinfotech.com]

Hi All,

I have one form bean namely "MyFormBean".
This bean contain vector (pricesVector) of class type "Price".

The class Price has two attribute "oldPrice" and "newPrice"

I want to display prices vector in such fashion

---------------------------------------------------------------------
oldprice1 (as label)                  newPrice1 (in text box)
oldprice2 (as label)                  newPrice2 (in text box)
oldprice2 (as label)                  newPrice2 (in text box)
---------------------------------------------------------------------

How do I do this using iterate tag, so that any updation in text box should
get updated in the vector (prices)?
I tried using iterate tag but could not get through?

Anybody having solution for this.

best regards,
Sandeep

Re: Updation using iterate tag

[Gregor Rayman <gr...@gmx.net>]

<Sa...@lntinfotech.com> wrote:


> Hi All,
> 
> I have one form bean namely "MyFormBean".
> This bean contain vector (pricesVector) of class type "Price".
> 
> The class Price has two attribute "oldPrice" and "newPrice"
> 
> I want to display prices vector in such fashion
> 
> ---------------------------------------------------------------------
> oldprice1 (as label)                  newPrice1 (in text box)
> oldprice2 (as label)                  newPrice2 (in text box)
> oldprice2 (as label)                  newPrice2 (in text box)
> ---------------------------------------------------------------------
> 
> How do I do this using iterate tag, so that any updation in text box should
> get updated in the vector (prices)?
> I tried using iterate tag but could not get through?
> 
> Anybody having solution for this.

1) You have to have two properties in your ActionForm:

public Collection getPrices();

and

public Price getPrice(int i);

Note: getPrice() should return valid Price even if the Vector does not
contain it. 

it could look something like this:

public Price getPrice(int i) {
    while (pricesVector.size() <= i) {
        pricesVector.add(new Price());
    }
    return pricesVector.get(i);
}

2)

your iterate tag could look something like this:

<logic:iterate 
    name="editPricesForm" property="prices" 
    id="element" indexId="i"
    type="Price">
      <tr>
          <td><bean:write name="element" property="oldPrice" /></td>
          <td><html:text property='<%= "price[" + i + "].newPrice" %>' />
              <html:hidden property='<%= "price[" + i + "].productID" %>'  />
          </td>
      </tr>
</logic:iterate>


You have to know, that the Vector will be FILLED (not just updated) when the
form is submitted. 

--
gR

Long Story short

[Frank Ling <fe...@hotmail.com>]

Hi, There:

I send a long version story regarding for the Iteration tag with indexed tag
for property update. Not too much people response. Here is the short version
for that story.

I get Dave hay's indexed tag work good with the Iterate tag for showing the
text field of my array attributes. I get attributes[n].value shows properly
on my JSP page. but nothing setting back to attributes array of my form
bean. the whole array is null after I received it on the next action class.

Can anybody explain to me, why I get all these attributes[n].value shows as
the name of HTML text name, then that will automatically populate back to my
array? It's not working that way for me right now. what I did wrong. Any
suggestion will be highly appreciated.

Thanks

Best Regards

Frank Ling