修复迁移500问题

2017-08-25 20:10:11 +08:00 · 2017-08-25 20:10:11 +08:00 · 290df45c79
parent a3ec46c820
commit 290df45c79
1 changed files with 1 additions and 1 deletions
--- a/db/migrate/20170825113413_modify_support_shixuns_for_major.rb
+++ b/db/migrate/20170825113413_modify_support_shixuns_for_major.rb
@ -2,7 +2,7 @@ class ModifySupportShixunsForMajor < ActiveRecord::Migration
  def up
    sql = "SELECT distinct(major_id) FROM `major_courses`"
    MajorCourse.find_by_sql(sql).each do |mc|
-      Major.where(:id => mc).update_column(:support_shixuns, 1)
+      Major.where(:id => mc.try(:major_id)).first.update_column(:support_shixuns, 1)
    end
  end