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Posted to users@myfaces.apache.org by kevin_zhai <ja...@gmail.com> on 2006/11/13 01:49:56 UTC
help,use t:commandButton pass some parameter to back bean
hi expert:
If I use t:commandButton pass some parameter to back bean
excepte use t:inputHidden,
can I use some other method implements?
I try use f:attribute,but it's not support EL expression.
thanks
--
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Re: help,use t:commandButton pass some parameter to back bean
Posted by Gerald Müllan <bi...@gmail.com>.
Yes this is a probably other way, but you have to invest little bit more work.
Under the hood updateActionListener works something like this but is
more convenient.
cheers,
Gerald
On 11/13/06, Richard Capraro <ri...@gmail.com> wrote:
> Hello Kevin,
> maybe you could use the "param" tag, like this
>
> <h:commandButton id="validate" action="#{userAction.validateUser}">
> <h:outputText value="#{msg.validate}"/>
> <f:param name="id" value="#{user.id}"/>
> </h:commandLink>
>
> To get the parameter "id" in your bean, use:
>
> FacesContext context = FacesContext.getCurrentInstance();
> Map map = context.getExternalContext().getRequestParameterMap();
> String employeeID = (String) map.get("id");
>
> Hope it helps you,
>
> Regards,
> Richard Capraro
>
> 2006/11/13, kevin_zhai <ja...@gmail.com>:
> >
> > hi expert:
> > If I use t:commandButton pass some parameter to back bean
> > excepte use t:inputHidden,
> > can I use some other method implements?
> > I try use f:attribute,but it's not support EL expression.
> >
> > thanks
> > --
> > View this message in context: http://www.nabble.com/help%2Cuse-t%3AcommandButton-pass-some-parameter-to-back-bean-tf2619256.html#a7309750
> > Sent from the MyFaces - Users mailing list archive at Nabble.com.
> >
> >
>
--
http://www.irian.at
Your JSF powerhouse -
JSF Consulting, Development and
Courses in English and German
Professional Support for Apache MyFaces
Re: help,use t:commandButton pass some parameter to back bean
Posted by Richard Capraro <ri...@gmail.com>.
Hello Kevin,
maybe you could use the "param" tag, like this
<h:commandButton id="validate" action="#{userAction.validateUser}">
<h:outputText value="#{msg.validate}"/>
<f:param name="id" value="#{user.id}"/>
</h:commandLink>
To get the parameter "id" in your bean, use:
FacesContext context = FacesContext.getCurrentInstance();
Map map = context.getExternalContext().getRequestParameterMap();
String employeeID = (String) map.get("id");
Hope it helps you,
Regards,
Richard Capraro
2006/11/13, kevin_zhai <ja...@gmail.com>:
>
> hi expert:
> If I use t:commandButton pass some parameter to back bean
> excepte use t:inputHidden,
> can I use some other method implements?
> I try use f:attribute,but it's not support EL expression.
>
> thanks
> --
> View this message in context: http://www.nabble.com/help%2Cuse-t%3AcommandButton-pass-some-parameter-to-back-bean-tf2619256.html#a7309750
> Sent from the MyFaces - Users mailing list archive at Nabble.com.
>
>
Re: help,use t:commandButton pass some parameter to back bean
Posted by Richard Capraro <ri...@gmail.com>.
Thanks Gerald,
indeed your method is simpler and cleaner than mine.
Hope it will help Kevin
Regards,
Richard
2006/11/13, Gerald Müllan <bi...@gmail.com>:
> Hi,
>
> in MyFaces the best way to pass some parameters to a backing bean is
> the usage of t:updateActionListener:
>
> <h:commandLink value="delete entry" action="#{managedBean.deleteEntry}">
> <t:updateActionListener
> property="#{managedBean.idOfEntryToDelete}" value="#{entry.id}"/>
> </h:commandLink>
>
> The attribute "idOfEntryToDelete" gets the entry-id and following you
> can use it for instance in the "deleteEntry" action method to find the
> entry object.
>
> cheers,
>
> Gerald
>
> On 11/13/06, kevin_zhai <ja...@gmail.com> wrote:
> >
> > hi expert:
> > If I use t:commandButton pass some parameter to back bean
> > excepte use t:inputHidden,
> > can I use some other method implements?
> > I try use f:attribute,but it's not support EL expression.
> >
> > thanks
> > --
> > View this message in context: http://www.nabble.com/help%2Cuse-t%3AcommandButton-pass-some-parameter-to-back-bean-tf2619256.html#a7309750
> > Sent from the MyFaces - Users mailing list archive at Nabble.com.
> >
> >
>
>
> --
> http://www.irian.at
>
> Your JSF powerhouse -
> JSF Consulting, Development and
> Courses in English and German
>
> Professional Support for Apache MyFaces
>
Re: help,use t:commandButton pass some parameter to back bean
Posted by Gerald Müllan <bi...@gmail.com>.
Hi,
in MyFaces the best way to pass some parameters to a backing bean is
the usage of t:updateActionListener:
<h:commandLink value="delete entry" action="#{managedBean.deleteEntry}">
<t:updateActionListener
property="#{managedBean.idOfEntryToDelete}" value="#{entry.id}"/>
</h:commandLink>
The attribute "idOfEntryToDelete" gets the entry-id and following you
can use it for instance in the "deleteEntry" action method to find the
entry object.
cheers,
Gerald
On 11/13/06, kevin_zhai <ja...@gmail.com> wrote:
>
> hi expert:
> If I use t:commandButton pass some parameter to back bean
> excepte use t:inputHidden,
> can I use some other method implements?
> I try use f:attribute,but it's not support EL expression.
>
> thanks
> --
> View this message in context: http://www.nabble.com/help%2Cuse-t%3AcommandButton-pass-some-parameter-to-back-bean-tf2619256.html#a7309750
> Sent from the MyFaces - Users mailing list archive at Nabble.com.
>
>
--
http://www.irian.at
Your JSF powerhouse -
JSF Consulting, Development and
Courses in English and German
Professional Support for Apache MyFaces