exportable support sheets

lib/tallty_import_export/export.rb

 module TalltyImportExport
   class Export
-    attr_reader :klass, :headers
+    attr_reader :klass
 
     def initialize klass
       @klass = klass
     end
 
+    # [
+    #   { key: 'entry_user_name', name: '被考核人', chain: [:entry, :user_name] },
+    #   { key: 'entry_user_code', name: '被考核人工号' },
+    #   { key: 'entry_user_department_name', name: '被考核人部门' },
+    #   { key: 'dimension_name', name: '考核维度' },
+    #   { key: 'user_name', name: '考核人' },
+    #   { key: 'user_code', name: '考核人工号' },
+    #   { key: 'user_department_name', name: '考核人部门' },
+    #   { key: 'state', name: '考核状态', method: :state_zh },
+    #   { key: 'score', name: '考核分' },
+    # ]
     # export_headers / headers
     # key: 属性的英文名
     # name: 属性的中文名
@@ -13,20 +24,49 @@ module TalltyImportExport
     # format: excel是否需要特定的格式，目前主要是类似于身份证号，可以用string
     # method: 导出时本地调用的方法
     # chain: 导出时对象属性通过链式调用
+    # index: 数组方式，需要嵌套拿到里面的
 
-    def export_xlsx records, options={}
+    def export_xlsx records, **options
       exportable_defaults(options)
 
       options = options.with_indifferent_access
 
       Axlsx::Package.new do |pack|
         workbook = pack.workbook
+
+        if @group_by.present?
+          if records.is_a?(Array)
+            records.group_by { |record| record.send(@group_by)}.each do |key, group_records|
+              @group_key = key
+              export_workbook workbook, group_records
+            end
+          else
+            records.group(@group_by).count.keys.each do |key|
+              @group_key = key
+              export_workbook workbook, records.where(@group_by => key)
+            end
+          end
+        else
+          export_workbook workbook, records
+        end
+
+        file_path = File.join(Rails.root, 'public', 'export')
+        FileUtils.mkdir_p(file_path) unless Dir.exist?(file_path)
+        file_name = "#{Time.now.strftime('%Y%m%d%H%M%S')}#{@filename}.xlsx"
+        pack.serialize(File.join(file_path, file_name))
+        url = ActionController::Base.helpers.asset_url("/export/#{file_name}")
+        return url
+      end
+    end
+
+    def export_workbook workbook, records
         # excel导出样式
         alignment = { vertical: :center, horizontal: :center }
         border    = { color: '969696', style: :thin }
         title1 = workbook.styles.add_style(alignment: alignment, border: border, sz: 16, b: true)
         title2 = workbook.styles.add_style(alignment: alignment, border: border, bg_color: "2a5caa",  sz: 16, fg_color: "fffffb")
         title3 = workbook.styles.add_style(alignment: alignment.merge(wrap_text: true), border: border, sz: 14)
+        headers = export_headers
 
       workbook.add_worksheet do |sheet|
         if respond_to?(:first_header)
@@ -35,22 +75,15 @@ module TalltyImportExport
           sheet.add_row [first_header], style: title1, height: 40
         end
 
-          sheet.add_row @headers.map{|header| header[:name]}, style: title2, height: 39
+        sheet.add_row headers.map{|header| header[:name]}, style: title2, height: 39
 
         each_method = records.is_a?(Array) ? :each : :find_each
         records.send(each_method) do |record|
           row = []
           headers.each{ |header| row.push(handle_data(record, header)) }
-            sheet.add_row row, style: title3, height: @row_height, types: @headers.map{|header| header[:format]}
-          end
-          sheet.column_widths *@headers.map{|header| header[:width] || @width}
+          sheet.add_row row, style: title3, height: @row_height, types: headers.map{|header| header[:format]}
         end
-        file_path = File.join(Rails.root, 'public', 'export')
-        FileUtils.mkdir_p(file_path) unless Dir.exist?(file_path)
-        file_name = "#{Time.now.strftime('%Y%m%d%H%M%S')}#{@filename}.xlsx"
-        pack.serialize(File.join(file_path, file_name))
-        url = ActionController::Base.helpers.asset_url("/export/#{file_name}")
-        return url
+        sheet.column_widths *headers.map{|header| header[:width] || @width}
       end
     end
 
@@ -60,7 +93,7 @@ module TalltyImportExport
       @row_height ||= options.delete(:row_height) || 35
       @width ||= options.delete(:width) || 30
       @filename ||= options.delete(:filename)
-      self.headers = export_headers
+      @group_by ||= options.delete(:group_by)
     end
 
     def headers= val
@@ -68,14 +101,14 @@ module TalltyImportExport
     end
 
     def export_headers
-      klass.try(:headers) || klass.try(:model_headers)
+      @headers || klass.try(:headers) || klass.try(:model_headers)
     end
 
     # 处理一个记录的数据
     def handle_data record, header
       data =
         if header[:method].present?
-          send(header[:method], record, header[:key])
+          send(header[:method], record, header)
         elsif header[:chain].present?
           header[:chain].reduce(record) do |obj, method|
             obj.send(method)

lib/tallty_import_export/exportable.rb

@@ -13,8 +13,8 @@ module TalltyImportExport
         const_get('Export').new(self)
       end
 
-      def export_xlsx *args
-        export_instance.export_xlsx(*args)
+      def export_xlsx records, **options
+        export_instance.export_xlsx(records, **options)
       end
     end
   end