Add export and import and batch delete subscribers feature.

app/controllers/admin/e_paper_subscribers_controller.rb

@@ -25,4 +25,87 @@ class Admin::EPaperSubscribersController < OrbitAdminController
     end
     redirect_to admin_e_paper_subscribers_path
   end
+
+  def export_excel
+    @epaper_subscribers = EPaperSubscriber.where(:email.nin=>[nil,""]).desc(:created_at)
+    @subscribers = @epaper_subscribers.where(:subscribed.ne=>false)
+    @unsubscribers = @epaper_subscribers.where(:subscribed=>false)
+    respond_to do |format|
+      format.xlsx {
+        response.headers['Content-Disposition'] = 'attachment; filename="'+Site.first.title+'-'+I18n.t('e_paper.e_paper')+'-'+I18n.t('e_paper.subscriber')+'.xlsx"'
+      }
+    end
+  end
+  def get_subscribers_modal
+    @epaper_subscribers = EPaperSubscriber.where(:email.nin=>[nil,""]).desc(:created_at)
+    @subscribers = @epaper_subscribers.where(:subscribed.ne=>false)
+    @unsubscribers = @epaper_subscribers.where(:subscribed=>false)
+    render :partial => 'modal_select', :layout => false
+  end
+  def import_from_excel
+    workbook = RubyXL::Parser.parse(params["import_file"].tempfile)
+    subscribe_sheet = workbook['Subscribe']
+    unsubscribe_sheet = workbook['Unsubscribe']
+    subscribe_sheet.each_with_index do |row, i|
+      next if i < 1
+      c0 = row.cells[0]
+      c1 = row.cells[1]
+      if c0
+        email = c0.value
+        if email.present?
+          subscriber = EPaperSubscriber.where(:email=>email).first
+          if subscriber.nil?
+            subscriber = EPaperSubscriber.new(:email=>email)
+          end
+          language = c1.value
+          if language.blank?
+            language = I18n.locale.to_s
+          end
+          subscriber.subscribed = true
+          subscriber.language = language
+          subscriber.save
+        end
+      end
+    end
+    unsubscribe_sheet.each_with_index do |row, i|
+      next if i < 1
+      c0 = row.cells[0]
+      c1 = row.cells[1]
+      if c0
+        email = c0.value
+        if email.present?
+          subscriber = EPaperSubscriber.where(:email=>email).first
+          if subscriber.nil?
+            subscriber = EPaperSubscriber.new(:email=>email)
+          end
+          language = c1.value
+          if language.blank?
+            language = I18n.locale.to_s
+          end
+          subscriber.subscribed = false
+          subscriber.language = language
+          subscriber.save
+        end
+      end
+    end
+    redirect_to admin_e_paper_subscribers_path
+  end
+
+  def download_excel_format
+    @subscribers = []
+    @unsubscribers = []
+    respond_to do |format|
+      format.xlsx {
+        response.headers['Content-Disposition'] = 'attachment; filename="'+Site.first.title+'-'+I18n.t('e_paper.e_paper')+'-'+I18n.t('e_paper.subscriber')+'excel_format.xlsx"'
+      }
+    end
+  end
+
+  def delete_subscribers
+    subscriber_ids = params['subscriber_ids']
+    if subscriber_ids
+      EPaperSubscriber.where(:id.in=>subscriber_ids).destroy
+    end
+    redirect_to admin_e_paper_subscribers_path
+  end
 end