数据时间，回复时间不能小于主贴时间

lib/tasks/public_message.rake

@@ -54,19 +54,53 @@ namespace :sync do
 
     discusses = Discuss.where(dis_id: shixun_id).where("parent_id is null and created_at >? and created_at <?", start_time, end_time)
     discusses.each do |discuss|
+      rand_created_on = random_time start_time, end_time
       puts discuss.id
       # 找到所有的子回复
       replies = Discuss.where(parent_id: discuss.id)
 
       # 如果有子回复，除了创建父回复外，还需要同步子回复
       new_message = Message.create!(board_id: board_id.to_i, author_id: discuss.user_id, parent_id: message_id, root_id: message_id)
-      MessageDetail.create!(message_id: new_message.id, content: discuss.try(:content))
+      new_message.update_columns(created_on: rand_created_on, updated_on: rand_created_on)
+      message_detail = MessageDetail.create!(message_id: new_message.id, content: discuss.try(:content))
+      message_detail.update_columns(created_at: rand_created_on, updated_at: rand_created_on)
       if replies.present?
         replies.each do |reply|
+          reply_time = random_smaller_time(rand_created_on, start_time, end_time)
           reply_message = Message.create!(board_id: board_id.to_i, author_id: reply.user_id, parent_id: new_message.id, root_id: message_id)
           MessageDetail.create!(message_id: reply_message.id, content: reply.try(:content))
         end
       end
     end
+
+
+    def min_swith(time)
+      puts time
+      return time < 9 ? "0#{time}" : time
+    end
+
+    def random_time(start_time, end_time)
+      hour = (6..23).to_a.sample(1).first
+      min = rand(60)
+      sec = rand(60)
+
+      start_time = Date.parse(start_time)
+      end_time = Date.parse(end_time)
+      date = (start_time..end_time).to_a.sample(1).first
+
+      time = "#{date} #{min_swith(hour)}:#{min_swith(min)}:#{min_swith(sec)}"
+
+      puts time
+      time
+    end
+
+    # 子评论的时间必须小于父评论
+    def random_smaller_time(parent_time, start_time, end_time)
+      large_time = random_time(start_time, end_time)
+      while large_time > parent_time
+        large_time = random_time(start_time, end_time)
+      end
+      large_time
+    end
   end
 end