Rescue_from for javascript requests
Just reraise the exception.
def show_js_errors exception if request.format == :js flash[:error] = 'some error occured' render :update do |page| page.redirect_to({:controller => '/home', :action => :index}) end else raise # << endendhttp://simonecarletti.com/blog/2009/11/re-raise-a-ruby-exception-in-a-rails-rescue_from-statement/ concurs:
rescue_from ActiveRecord::StatementInvalid do |exception| if exception.message =~ /invalid byte sequence for encoding/ rescue_invalid_encoding(exception) else raise endend[...]The exception is correctly rethrown but it isn't catched [sic] by the standard Rails rescue mechanism and the standard exception page is not rendered.