Routes error on nested controller when submitting form, databasedotcom-gem - ruby-on-rails-3

Question

I am using the databasedotcom & databasedotcom-rails gem so that I get generate leads into Salesforce from form submissions. It was working standalone until I nested the controller under a parent, and now when I press submit I get this routes error:
No route matches [POST] "/events/516ee9a0421aa9c44e000001/leads/new"
Here is all my code:
resources :events do
resources :leads
end
class LeadsController < ApplicationController
include Databasedotcom::Rails::Controller
def new
#lead = Lead.new
respond_to do |format|
format.html # new.html.erb
format.json { render :json => #lead }
end
end
def create
#lead = Lead.new(params[:lead])
#lead.event_id = params[:event_id]
#lead['OwnerId'] = '005b0000000WxqE'
#lead['IsConverted'] = false
#lead['IsUnreadByOwner'] = false
respond_to do |format|
if #event_lead.save
format.html { redirect_to #lead, :notice => 'Lead was successfully created.' }
format.json { render :json => #lead, :status => :created, :location => #lead }
else
format.html { render :action => "new" }
format.json { render :json => #lead.errors, :status => :unprocessable_entity }
end
end
end
end
<%= simple_form_for [#event, #lead], url: new_event_lead_path do |f| %>
<%= f.input :Download_Brochure__c, :check => "true", :as => :boolean, :as => :hidden %>
<%= f.input :FirstName %>
<%= f.input :LastName %>
<%= f.input :Company %>
<p>Also interested in:</p>
<%= f.input :Sponsor_Request__c, :as => :boolean, :label => "Sponsoring" %>
<%= f.input :Presenting__c, :as => :boolean, :label => "Presenting" %>
<%= f.input :Newsletter_Signup__c, :as => :boolean, :label => "Newletter" %>
<%= f.input :Privacy_Policy__c, :as => :boolean, :checked => true, :label => "Would you like to stay updated" %>
<%= f.button :submit, :label => "Submit" %>
<% end %>

Answer 1

The problem is in your form. With the routes as you have written them, the new_event_lead_path maps to a GET request to your LeadsController#new action. Run rake routes on the command line to confirm this.
You want to submit the form to LeadsController#create. Rails will set this up for you when you use a new instance of Lead in the expression simple_form_for [#event, #lead] provided you don't override the url. Therefore, update your form:
<%= simple_form_for [#event, #lead] do |f| %>