Pass JavaScript method outcome to server?

[eirirlar]

Hi,

I'm working with the richfaces gmap component. I need to send some data to the server that is the outcome of some JavaScript method call, along with calling an action method.

I would like this to be as easy as the following:

<h:commandButton action="#{bean.method(par1,par2,par3)}"/>

where parX is a JavaScript method outcome. EL doesn't work this way so I have to figure out something.

I was thinking of using a JavaScript "onclick" event on the commandButton that triggers some JavaScript code that somehow exposes parX to EL.

Another thought was as "onclick" that calls a Seam @Remote-method with the correct JavaScript parameters.

Or maybe create a custom component.

Any thoughts on what would be the best and cleanest solution?

[stu2]

"eirirlar" wrote:
Hi,

I'm working with the richfaces gmap component. I need to send some data to the server that is the outcome of some JavaScript method call, along with calling an action method.

I would like this to be as easy as the following:

<h:commandButton action="#{bean.method(par1,par2,par3)}"/>

where parX is a JavaScript method outcome. EL doesn't work this way so I have to figure out something.

I was thinking of using a JavaScript "onclick" event on the commandButton that triggers some JavaScript code that somehow exposes parX to EL.

Another thought was as "onclick" that calls a Seam @Remote-method with the correct JavaScript parameters.

Or maybe create a custom component.

Any thoughts on what would be the best and cleanest solution?

Remember that EL for the button executes at render time, so I don't think your first option would work conceptually. A simple option is to just put a plain old hidden field in your form, and have the javascript method set that prior to submit. You can pick the value up in the beam as an @RequestParameter

[eirirlar]

Another thought was as "onclick" that calls a Seam @Remote-method with the correct JavaScript parameters.

This is what I ended up doing in the end. I had a look at ajax4jsf's jsFunction solution as well, but seam's remoting seems cleaner and simpler.