controller.rb

	def index
		@albums = Album.all.with_attached_images
	end

	def show
		authorize! :show, @album
		@album = Album.friendly.find(params[:id])
	end

	def new
		authorize! :new, @album

	    @gallery = Gallery.find(params[:gallery_id])
	    @album = @gallery.albums.build
	end

	def edit
		authorize! :edit, @album
	end

	def create
		authorize! :create, @album

		@album = Album.new(album_params)

		respond_to do |format|
		  if @album.save
		    format.html { redirect_to @album, notice: 'Album was successfully created.' }
		  else
		    format.html { render :new }
		  end
		end
	end

	def update
		authorize! :update, @album

		respond_to do |format|
		  if @album.update(album_params)
		    format.html { redirect_to @album, notice: 'Album was successfully updated.' }
		    format.json { render :show, status: :ok, location: @album }
		  else
		    format.html { render :edit }
		  end
		end
	end

	def destroy
		authorize! :destroy, @album

		@album.destroy
		respond_to do |format|
		  format.html { redirect_to root_url, notice: 'Album was successfully destroyed.' }
		end
	end