Remove danging :photos table and other photo cruft

app/controllers/admin/conference_controller.rb

@@ -185,7 +185,7 @@ module Admin
                                          :use_difficulty_levels, :use_vpositions, :use_vdays, :vdays_attributes,
                                          :vpositions_attributes, :use_volunteers, :color,
                                          :sponsorship_levels_attributes, :sponsors_attributes,
-                                         :photos_attributes, :targets, :targets_attributes,
+                                         :targets, :targets_attributes,
                                          :campaigns, :campaigns_attributes, :registration_limit)
     end
   end

app/controllers/conference_controller.rb

@@ -23,11 +23,6 @@ class ConferenceController < ApplicationController
     end
   end
 
-  def gallery_photos
-    @photos = @conference.photos
-    render 'photos', formats: [:js]
-  end
-
   private
 
   def respond_to_options

app/models/conference.rb

@@ -30,7 +30,6 @@ class Conference < ActiveRecord::Base
   has_many :vpositions, dependent: :destroy
   has_many :sponsorship_levels, -> { order('position ASC') }, dependent: :destroy
   has_many :sponsors, dependent: :destroy
-  has_many :photos, dependent: :destroy
   has_many :targets, dependent: :destroy
   has_many :campaigns, dependent: :destroy
   has_many :commercials, as: :commercialable, dependent: :destroy
@@ -44,7 +43,6 @@ class Conference < ActiveRecord::Base
   accepts_nested_attributes_for :questions, allow_destroy: true
   accepts_nested_attributes_for :vdays, allow_destroy: true
   accepts_nested_attributes_for :vpositions, allow_destroy: true
-  accepts_nested_attributes_for :photos, allow_destroy: true
   accepts_nested_attributes_for :targets, allow_destroy: true
   accepts_nested_attributes_for :campaigns, allow_destroy: true
 

app/models/photo.rb

@@ -1,10 +0,0 @@
-class Photo < ActiveRecord::Base
-  belongs_to :conference
-  validates_presence_of :picture
-  has_attached_file :picture,
-                    styles: { thumb: '100x100>', large: '300x300>', banner: '600x300>' }
-
-  validates_attachment_content_type :picture,
-                                    content_type: [/jpg/, /jpeg/, /png/, /gif/],
-                                    size: { in: 0..500.kilobytes }
-end

app/views/conference/_gallery_photo.html.haml

@@ -1,7 +0,0 @@
-- photos.each_with_index do |photo,index|
-  %div.item{ class: (index==0? 'active' : '') }
-    = image_tag(photo.picture(:banner))
-    - unless photo.description.blank?
-      %div.carousel-caption
-        .lead
-          = photo.description