Merge pull request #1385 from DigitalCurationCentre/issue501

Enable recaptcha for contact_us form: fixes #501

app/controllers/contacts_controller.rb

@@ -0,0 +1,31 @@
+class ContactUs::ContactsController < ApplicationController
+
+  def create
+    @contact = ContactUs::Contact.new(params[:contact_us_contact])
+
+    if verify_recaptcha(model: @contact) && @contact.save
+      redirect_to(ContactUs.success_redirect || '/', :notice => _('Contact email was successfully sent.'))
+    else
+      flash[:alert] = _('Captcha verification failed, please retry.')
+      redirect_to request.referrer
+      #render_new_page
+    end
+  end
+
+  def new
+    @contact = ContactUs::Contact.new
+    render_new_page
+  end
+
+  protected
+
+    def render_new_page
+      case ContactUs.form_gem
+      when 'formtastic'  then render 'new_formtastic'
+      when 'simple_form' then render 'new_simple_form'
+      else
+        render 'new'
+      end
+    end
+
+end