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From: Martin Gainty <mgainty@hotmail.com>
To: Struts Users Mailing List <user@struts.apache.org>
Subject: RE: input fields with dynamic names
Date: Mon, 3 May 2010 11:15:26 -0400
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//The action class contains a (dynamically populated) collection such as pe=
rsons defined here

@Result(name=3D"list"=2C value=3D"listPeople.action"=2C type=3DServletRedir=
ectResult.class)
public class EditPersonAction extends ActionSupport {
    ArrayList<Person> persons =3D new ArrayList()
<snip>
}

//then the jsp makes reference to persons ArrayList from the action class a=
nd references specific rows by utilising stat.index by the s:iterator itera=
tor

<s:form action=3D"submitPersonInfo" namespace=3D"/conversion" method=3D"pos=
t">
    <%--
        The following is done Dynamically
    --%>
    <s:iterator value=3D"new int[3]" status=3D"stat">
        <s:textfield    label=3D"%{'Person '+#stat.index+' Name'}"=20
                        name=3D"%{'persons['+#stat.index+'].name'}" />
        <s:textfield    label=3D"%{'Person '+#stat.index+' Age'}"=20
                        name=3D"%{'persons['+#stat.index+'].age'}" />
    </s:iterator>

this would achieve the effect of dynamically populating n number of Person =
objects

does this answer the question?
Martin Gainty=20
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> Date: Mon=2C 3 May 2010 09:08:29 -0500
> From: mitch@claborn.net
> To: user@struts.apache.org
> Subject: Re: input fields with dynamic names
>=20
> Bump.  Any other ideas?
>=20
> mitch
>=20
>=20
> Mitch Claborn wrote:
> > That works for setting parameter names=2C but not so well when the tags=
=20
> > in the JSP need to retrieve the value for display in the page=2C=20
> > particularly if there is a validation error.  If there is a static=20
> > field named "fred" and the action has a "getFred()" method=2C then all=
=20
> > is good.  But the field names in my case are dynamic=2C so I can't have=
=20
> > a getNNNNN for all of the dynamic fields.
> >
> > mitch
> >
> >
> > Greg Lindholm wrote:
> >> You are probably looking for ParameterAware
> >>
> >> http://struts.apache.org/2.x/struts2-core/apidocs/org/apache/struts2/i=
nterceptor/ParameterAware.html=20
> >>
> >>
> >>
> >> On Wed=2C Apr 28=2C 2010 at 12:47 PM=2C Mitch Claborn <mitch@claborn.n=
et>=20
> >> wrote:
> >> =20
> >>> I'm sure I've seen the answer to this somewhere=2C but darned if I ca=
n=20
> >>> find it
> >>> now when I need it!
> >>>
> >>> I have a page that allows edits of various options=2C the names of=20
> >>> which are
> >>> dynamically retrieved from the database.  If I have the code in the=20
> >>> JSP as
> >>> below=2C the value displayed in the text field is always that from th=
e
> >>> database.  If there is a validation error=2C the user's input value i=
s=20
> >>> not
> >>> maintained as it would be if there were an explicit getter/setter=20
> >>> for each
> >>> option name.  Is there a way to code the Action (or the JSP) so that=
=20
> >>> the
> >>> value shown is the user's input value if there is an error?
> >>>
> >>>         <s:iterator value=3D"authorizedOptions" id=3D"o">
> >>>                 <s:textfield size=3D"10" name=3D"${o.optionName}"
> >>> id=3D"${o.optionName}" value=3D"${o.valueInt}" />
> >>>
> >>> Mitch
> >>>
> >>>
> >>> ---------------------------------------------------------------------
> >>> To unsubscribe=2C e-mail: user-unsubscribe@struts.apache.org
> >>> For additional commands=2C e-mail: user-help@struts.apache.org
> >>>
> >>>
> >>>    =20
> >>
> >> ---------------------------------------------------------------------
> >> To unsubscribe=2C e-mail: user-unsubscribe@struts.apache.org
> >> For additional commands=2C e-mail: user-help@struts.apache.org
> >>
> >>
> >>  =20
> >
> > ---------------------------------------------------------------------
> > To unsubscribe=2C e-mail: user-unsubscribe@struts.apache.org
> > For additional commands=2C e-mail: user-help@struts.apache.org
> >
> >
>=20
> ---------------------------------------------------------------------
> To unsubscribe=2C e-mail: user-unsubscribe@struts.apache.org
> For additional commands=2C e-mail: user-help@struts.apache.org
>=20
 		 	   		 =20
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