Question

The error:

NoMethodError (undefined method `generate_drawer_data’ for #):

caused when the method call is in the block:

respond_to do |format|
  format.js do
    render :update do |page|
      generate_drawer_data(page)

but when the method is outside the block, no runtime errors:

generate_drawer_data()

respond_to do |format|
  format.js do
    render :update do |page|

the method, near the bottom of the controller

 def generate_drawer_data(page = false)
   ... page_replaces
    end

So… why am I getting this behavior?

I’m using ruby on rails 2.3.8

Answer 1

I believe that block passed to render :update is more like a view, so it has access to controller’s instance variable and helpers. Try define this method as helper method using helper_method :generate_drawer_data.