added auction list to admin panel

app/controllers/admin/auctions_controller.rb

@@ -0,0 +1,41 @@
+module Admin
+  class AuctionsController < BaseController
+    load_and_authorize_resource
+
+    def index
+      params[:q] ||= {}
+
+      @auctions = Auction.with_status(params[:statuses_contains])
+
+      normalize_search_parameters do
+        @q = @auctions.ransack(PartialSearchFormatter.format(params[:q]))
+        @auctions = @q.result.page(params[:page])
+      end
+
+      @auctions = @auctions.per(params[:results_per_page]) if params[:results_per_page].to_i.positive?
+
+      render_by_format('admin/auctions/index', 'auctions')
+    end
+
+    def update
+
+      redirect_to admin_auctions_path
+    end
+
+    private
+
+    def normalize_search_parameters
+      ca_cache = params[:q][:valid_to_lteq]
+      begin
+        end_time = params[:q][:valid_to_lteq].try(:to_date)
+        params[:q][:valid_to_lteq] = end_time.try(:end_of_day)
+      rescue
+        logger.warn('Invalid date')
+      end
+
+      yield
+
+      params[:q][:valid_to_lteq] = ca_cache
+    end
+  end
+end