Using html:select with multiple=true and mapped properties - bug?

[Ville Rinne <vi...@wmdata.fi>]

Hi,

I'm trying to use the html:select-tag using a formbean with mapped
properties. Everything else is fine except when submitting and selecting
multiple values from the select-field. When  selecting multiple values only
the first value gets submitted to the form bean. Now I was excepting that my
setValue(String key, Object value) would receive a String-array instance
containing all the selected values but it receives a String containing the
first value selected. If I change to the "traditional" way of doing things
and have separate getters and setters for the select-property then things
work fine and all the selected values returned. Has anybody else come across
this same problem?

I can't figure out if I'm doing something wrong or if it's a bug. I'm using
Struts 1.1-rc1.

sincerely,
Ville Rinne




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Re: Using html:select with multiple=true and mapped properties - bug?

[David Chelimsky <da...@chelimsky.org>]

I handled this successfully as follows:

Here's what's in the .jsp page:

<html:form ...>
<bean:define id="options" name="myForm" property="options" 
type="java.util.Collection" />
               <html:select
                   multiple="true"
                   property="selectedOptions"
                   size="15"
               >
                   <html:options collection="options" property="id" 
labelProperty="name"/>
               </html:select>
</html:form>

In my ActionForm (mapped to myForm) I built up a List of options w/ 
getId() and getName() methods (corresponding to the property and 
labelProperty attributes of the <html:options> tag). Then I built up an 
Integer[] of selectedOptions (id values) associated w/ this Object. It 
happens that I maintain the id values in a List in the model layer as 
well, so I converted that List to an Integer[] in the ActionForm. So the 
ActionForm has getOptions() that returns a List and getSelectedOptions() 
that returns an Integer[].

On submit, Struts builds up an Integer[] and calls my 
setSelectedOptions(Integer[]) method on the ActionForm. So now I can 
convert it back to a List and pass it back to the model which handles 
the persistence.

Enjoy.
David



Ville Rinne wrote:

>Hi,
>
>I'm trying to use the html:select-tag using a formbean with mapped
>properties. Everything else is fine except when submitting and selecting
>multiple values from the select-field. When  selecting multiple values only
>the first value gets submitted to the form bean. Now I was excepting that my
>setValue(String key, Object value) would receive a String-array instance
>containing all the selected values but it receives a String containing the
>first value selected. If I change to the "traditional" way of doing things
>and have separate getters and setters for the select-property then things
>work fine and all the selected values returned. Has anybody else come across
>this same problem?
>
>I can't figure out if I'm doing something wrong or if it's a bug. I'm using
>Struts 1.1-rc1.
>
>sincerely,
>Ville Rinne
>
>
>
>
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>To unsubscribe, e-mail: struts-user-unsubscribe@jakarta.apache.org
>For additional commands, e-mail: struts-user-help@jakarta.apache.org
>
>
>
>
>  
>



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