调整

app/controllers/welcome_controller.rb

@@ -115,15 +115,14 @@ class WelcomeController < ApplicationController
               # 先同步实训
               local_shixun = LocalShixun.where(id: local_stage_shixun.local_shixun_id).first
               shixun = _local_to_shixun(local_shixun) if local_shixun.present?
-              puts("#############local_shixun_id#{local_shixun.id}")
-              puts("#############shixun_id#{shixun.id}")
-
-              new_stage_shixun = StageShixun.new
-              new_stage_shixun.position = local_stage_shixun.position
-              new_stage_shixun.stage_id = new_stage.id
-              new_stage_shixun.subject_id = subject.id
-              new_stage_shixun.shixun_id = shixun.try(:id)
-              new_stage_shixun.save!
+              if shixun
+                new_stage_shixun = StageShixun.new
+                new_stage_shixun.position = local_stage_shixun.position
+                new_stage_shixun.stage_id = new_stage.id
+                new_stage_shixun.subject_id = subject.id
+                new_stage_shixun.shixun_id = shixun.try(:id)
+                new_stage_shixun.save!
+              end
             end
           end
         end