注释迁移文件

db/migrate/20190805061306_add_exec_time_to_evaluate_records.rb

@@ -1,7 +1,7 @@
 class AddExecTimeToEvaluateRecords < ActiveRecord::Migration[5.2]
   def change
-    remove_columns :evaluate_records, :exec_time if User.first.attributes.include?("exec_time")
+    # remove_columns :evaluate_records, :exec_time if EvaluateRecord.first.attributes.include?("exec_time")
-
+    #
-    add_column :evaluate_records, :exec_time, :integer
+    # add_column :evaluate_records, :exec_time, :integer
   end
 end