add option to delete registration

app/controllers/admin/registrations_controller.rb

@@ -28,4 +28,18 @@ class Admin::RegistrationsController < ApplicationController
       redirect_to admin_conference_registrations_path(@conference.short_title, @registration)
       flash[:notice] = "Updated '#{params[:view_field]}' for #{(Person.where("id = ?", @registration.person_id).first).email}"
   end
+  
+  def delete
+    registration = @conference.registrations.where(:id => params[:id]).first
+    person = Person.where("id = ?", registration.person_id).first
+
+    begin registration.destroy
+      redirect_to admin_conference_registrations_path
+      flash[:notice] = "Deleted registration for #{person.public_name} #{person.email}"
+    rescue Exception => e
+      Rails.logger.debug e.backtrace.join("\n")
+      redirect_to(admin_conference_registrations_path(@conference.short_title), :alert => 'Failed to delete registration:' + e.message)
+      return
+    end
+  end
 end

app/views/admin/registrations/show.html.haml

@@ -40,7 +40,7 @@
           %td
             = link_to "Edit", "#", :class => "btn btn-primary"
           %td
-            = link_to "Delete", "#", :class => "btn btn-danger", :confirm => "Really delete registration for #{registration.public_name}?"
+            = link_to "Delete", admin_conference_registrations_path(@conference.short_title, :id => registration.id), :method => :delete, :class => "btn btn-danger", :confirm => "Really delete registration for #{registration.public_name} #{registration.email}?"
 
 :javascript
   $(document).ready(function() {

config/routes.rb

@@ -11,6 +11,7 @@ Osem::Application.routes.draw do
       put "/schedule" => "schedule#update"
       get "/registrations" => "registrations#show"
       put "/registrations/change_field" => "registrations#change_field"
+      delete "/registrations"  => "registrations#delete"
       get "/emailsettings" => "emails#show", :as => "email_settings"
       put "/emailsettings" => "emails#update", :as => "email_settings"
       get "/supporter_levels" => "SupporterLevels#show"