ImageGallery model

We can create an ImageGallery with its images, so we then link it
with the fields

See #869

app/models/image_gallery.rb

@@ -0,0 +1,5 @@
+class ImageGallery < ActiveRecord::Base
+  belongs_to :site
+  belongs_to :field
+  mount_uploaders :images, ImageGalleryUploader
+end

app/uploaders/image_gallery_uploader.rb

@@ -0,0 +1,14 @@
+# encoding: utf-8
+class ImageGalleryUploader < CarrierWave::Uploader::Base
+  storage :file
+
+  # Override the directory where uploaded files will be stored.
+  # This is a sensible default for uploaders that are meant to be mounted:
+  def store_dir
+    "uploads/#{model.class.to_s.underscore}/#{mounted_as}/#{model.id}"
+  end
+
+  def full_filename(filename)
+    "#{SecureRandom.uuid}-#{filename}"
+  end
+end

db/migrate/20170524230256_create_image_galleries.rb

@@ -0,0 +1,9 @@
+class CreateImageGalleries < ActiveRecord::Migration
+  def change
+    create_table :image_galleries do |t|
+      t.integer :site_id
+      t.integer :field_id
+      t.text :images
+    end
+  end
+end

db/schema.rb

@@ -11,7 +11,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20170523182508) do
+ActiveRecord::Schema.define(version: 20170524230256) do
 
   create_table "activities", force: true do |t|
     t.integer  "user_id"
@@ -111,6 +111,12 @@
     t.datetime "updated_at", null: false
   end
 
+  create_table "image_galleries", force: true do |t|
+    t.integer "site_id"
+    t.integer "field_id"
+    t.text    "images"
+  end
+
   create_table "import_jobs", force: true do |t|
     t.string   "status"
     t.string   "original_filename"

spec/controllers/collections_controller_spec.rb

@@ -358,4 +358,10 @@ def expect_redirect_to_login(response)
     expect(sites.first['properties'][numeric.es_code]).to eq(25)
   end
 
+  it "uploads a logo" do
+    file = fixture_file_upload('tracking_food.jpg', 'image/jpeg')
+    post :upload_logo, logo: file
+    response.should be_success
+  end
+
 end

spec/requests/image_gallery_spec.rb

@@ -0,0 +1,17 @@
+require 'spec_helper'
+
+describe "Image Gallery" do
+  it "uploads multiple logos" do
+    file = File.open('spec/fixtures/tracking_food.jpg')
+    file2 = File.open('spec/fixtures/tracking_food.jpg')
+    instance = ImageGallery.new
+    instance.images = [file, file2]
+    instance.save!
+    instance.images.count.should eq(2)
+    instance.images.each do |image|
+      get image.url
+      response.should be_success
+    end
+  end
+
+end