Forum: Ruby on Rails params on controller and view

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Human D. (Guest)
on 2006-01-30 23:59
(Received via mailing list)
Hi,
I have a link that says:
<%= link_to_remote("Data", :update => 'pie_graph_div', :url => {
:action => :show_pie_graph, :mode => 'nums' }) %>

which calls *show_pie_graph*:
Controller:
	def show_pie_graph
		render :layout => false
		@mode = params[:mode]
	end
View:
<img src="/surveys/make_pie_graph/<%=@mode%>" />

But @mode on view always is nil.
I can see the :mode from the view by calling params[:mode] but not
from the controller.

What's the problem? Did I misunderstand something?

Thanks in advance,
- H
Mark Reginald J. (Guest)
on 2006-01-31 00:18
(Received via mailing list)
Human D. wrote:

> from the controller.
Set @mode before calling render.


--
We develop, watch us RoR, in numbers too big to ignore.
Human D. (Guest)
on 2006-01-31 00:27
(Received via mailing list)
Thanks
Tom F. (Guest)
on 2006-01-31 03:19
(Received via mailing list)
You need to swap the lines in the controller.

	def show_pie_graph
		@mode = params[:mode]
		render :layout => false
	end

The 'render' method uses the current state of the controller at the time
it
is called to setup the view.  At that time, @mode is not yet set, so
that is
what the view sees.
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