apply StringLiterals cop (remove double quotes, unless there is string interpolation)

app/models/ahoy/event.rb

@@ -1,6 +1,6 @@
 module Ahoy
   class Event < ActiveRecord::Base
-    self.table_name = "ahoy_events"
+    self.table_name = 'ahoy_events'
 
     belongs_to :visit
     belongs_to :user

app/models/contact.rb

@@ -4,7 +4,7 @@ class Contact < ActiveRecord::Base
 
   validates :conference, presence: true
   # Conferences only have one contact
-  validates :conference_id, uniqueness: {message: "has already contact details"}
+  validates :conference_id, uniqueness: {message: 'has already contact details'}
 
   validates :facebook, :twitter, :googleplus, :instagram,
             format: URI::regexp(%w(http https)), allow_blank: true

app/models/datatable.rb

@@ -79,7 +79,7 @@ class Datatable
       sort_by << "#{sort_column(colnum)} #{sort_direction(colnum)}"
       colnum += 1
     end
-    sort_by.join(", ")
+    sort_by.join(', ')
   end
 
   def sorted? index=0
@@ -93,6 +93,6 @@ class Datatable
 
   def sort_direction index=0
     index = "sSortDir_#{index}"
-    params[index] == "desc" ? "desc" : "asc"
+    params[index] == 'desc' ? 'desc' : 'asc'
   end
 end

app/models/event_attachment.rb

@@ -0,0 +1,26 @@
+class EventAttachment < ActiveRecord::Base
+  has_paper_trail
+
+  belongs_to :event
+  attr_accessible :public, :attachment, :event_id, :title
+
+  has_attached_file :attachment, path: ':rails_root/storage/:rails_env/attachments/:id/:style/:basename.:extension'
+  include Rails.application.routes.url_helpers
+
+  def to_jq_upload
+    {
+        'name' => read_attribute(:attachment_file_name),
+        'size' => read_attribute(:attachment_file_size),
+        'title' => read_attribute(:title),
+        'public' => read_attribute(:public),
+        #"url" => attachment.url(:original),
+        'url' => conference_proposal_event_attachment_path(self.event.conference.short_title, self.event_id, self.id),
+        'delete_url' => conference_proposal_event_attachment_path(self.event.conference.short_title, self.event_id, self.id),
+        'delete_type' => 'DELETE'
+    }
+  end
+  #:path => ":rails_root/public/system/:attachment/:id/:style/:filename",
+  #    :url => "/system/:attachment/:id/:style/:filename"
+
+  #has_paper_trail :meta => {:associated_id => :event_id, :associated_type => "Event"}
+end

app/models/photo.rb

@@ -3,7 +3,7 @@ class Photo < ActiveRecord::Base
   belongs_to :conference
   validates_presence_of :picture
   has_attached_file :picture,
-                    styles: { thumb: "100x100>", large: "300x300>", banner: "600x300>" }
+                    styles: { thumb: '100x100>', large: '300x300>', banner: '600x300>' }
 
   validates_attachment_content_type :picture,
                                     content_type: [/jpg/, /jpeg/, /png/, /gif/],

app/models/visit.rb

@@ -1,4 +1,4 @@
 class Visit < ActiveRecord::Base
-  has_many :ahoy_events, class_name: "Ahoy::Event"
+  has_many :ahoy_events, class_name: 'Ahoy::Event'
   belongs_to :user
 end