Rails - Aug 2006 - Calling/Executing javascript functions from controller

Greg wrote:
> Is the "resizeMap" function in the controller helper? If so try:
> 
>    render :update do |page|
>      page.resizeMap
>    end
Take a look here:

http://lists.rubyonrails.org/pipermail/rails/2006-April/029919.html

... or Google "inline RJS".

-- 
Posted via http://www.ruby-forum.com/.

Hey all,
How can I call a javascript function from my controller?
Is it possible to simply call a javascript function
from directly in the controller WITHOUT needing an AJAX
request to come through via link_to_remote or remote form?

As an example I''ve tried:

class RandomController < ApplicationController
 before_filter :login_required, :except => [:index, :initialize]
 def index
   @session[:mode] = ''view''
   @map = GMap.new("map")

   render :update do |page|
     page.call("resizeMap")
   end

   @map.control_init(:large_map => true, :map_type => true)
   @map.center_zoom_init([38.539506, -121.757172],13)
   store_location
 end
end

This as expected does not work, it spits of the try{blah blah} catch
stuff.
Any help is greatly appreciated!

Russ

-- 
Posted via http://www.ruby-forum.com/.

Is the "resizeMap" function in the controller helper? If so try:

   render :update do |page|
     page.resizeMap
   end

-- 
Posted via http://www.ruby-forum.com/.

Greg,
Thanks for the suggestion - however I have tried this before and had the
following problem:

resizeMap() is a function in mapscript.js (an external js file) that is in
the public/javascripts folder and included in the generated html page.

The code uses the Ym4r plugin for Google Maps/Yahoo Maps
in my controller i have:

class RandomController < ApplicationController
  before_filter :login_required, :except => [:index, :initialize]
  def index
    @session[:mode] = ''view''
    @map = GMap.new("map")

    render :update do |page|
      page.call("resizeMap")
    end

    @map.control_init(:large_map => true, :map_type => true)
    @map.center_zoom_init([38.539506, -121.757172],13)
    store_location
  end
end


But I end up with this as the output for the generated index.html:

try {
resizeMap();
} catch (e) { alert(''RJS error:\n\n'' + e.toString());
alert(''resizeMap();''); throw e }


How can I actually call my javascript function and not end up with this?

Thanks,
Russ
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