Question

ruby 2.0.0p247

Rails 3.2.22

MySQL的

我添加了gem＆＃39; annotate＆＃39; 捆绑安装后。宝石已安装

下一步：rails g annotate：install

下一步：运行rake db：migrate

显示错误：

无法注释app / models / blog_post.rb：未定义的方法`supports_foreign_keys？＆＃39; for ActiveRecord :: ConnectionAdapters :: Mysql2Adapter：0x0000000346aae8

与其他模型类似

有什么不对？如何解决这个问题。谢谢。

修改

shema.rb

.........................
create_table "blog_posts", :force => true do |t|
    t.integer  "user_id",                            :null => false
    t.string   "subject"
    t.text     "body",                               :null => false
    t.datetime "created_at"
    t.datetime "updated_at"
    t.integer  "comments_count",  :default => 0,     :null => false
    t.boolean  "delta",           :default => true,  :null => false
    t.string   "tags_line"
    t.string   "commentable_by",  :default => "all", :null => false
    t.string   "visible_by",      :default => "all", :null => false
    t.integer  "article_id"
    t.boolean  "draft",           :default => false, :null => false
    t.datetime "published_at"
    t.datetime "last_comment_at"
  end

  add_index "blog_posts", ["delta"], :name => "index_blog_posts_on_delta"
  add_index "blog_posts", ["user_id"], :name => "index_blog_posts_on_user_id"
........................................................................

Answer 1

您的annotate-gem和mysql2-gem的版本可能不兼容。您仍在使用Rails 3.2。也许是因为你的mysql2-gem很老了。查看annotate-gem的release notes时，可以看到它在2.6.9中添加了foreign_key支持。所以它可以帮助降级到2.6.8

gem annotate，error：无法注释app / models / blog_post.rb：未定义的方法`supports_foreign_keys？＆＃39;

1 个答案: