Adds photo to venue

app/models/venue.rb

@@ -1,8 +1,13 @@
 class Venue < ActiveRecord::Base
-  attr_accessible :name, :description, :address, :website
+  attr_accessible :name, :description, :website, :address, :photo
   has_many :conferences
   before_create :generate_guid
+  has_attached_file :photo,
+                    styles: { thumb: '100x100>', large: '300x300>' }
 
+  validates_attachment_content_type :photo,
+                                    content_type: [/jpg/, /jpeg/, /png/, /gif/],
+                                    size: { in: 0..500.kilobytes }
   private
 
   def generate_guid

app/views/admin/venue/venue_info.html.haml

@@ -5,4 +5,7 @@
       = f.input :address, :input_html => {:rows => 1}
       = f.input :website
       = f.input :description, :input_html => { :rows => 10, :cols => 20 }
+      - if !@venue.photo.blank?
+        = image_tag @venue.photo(:thumb)
+      = f.input :photo
       = f.action :submit, :as => :button, :button_html => {:class => "btn btn-primary"}