![](/img/trans.png)
[英]ActiveRecord > MySQL Adapter > undefined method `more_results'
[英]NoMethodError: undefined method `more_results' for #<Mysql>
我正在嘗試創建rake任務以從舊的php應用程序導入數據。但是,當我在rails控制台上運行Old :: User.all時,我無法正確連接到mysql數據庫,出現此錯誤:
NoMethodError: undefined method `more_results' for #<Mysql>
from /Library/Ruby/Gems/1.8/gems/activerecord-3.0.3/lib/active_record/connection_adapters/mysql_adapter.rb:623:in `select'
from /Library/Ruby/Gems/1.8/gems/activerecord-3.0.3/lib/active_record/connection_adapters/abstract/database_statements.rb:7:in `select_all'
from /Library/Ruby/Gems/1.8/gems/activerecord-3.0.3/lib/active_record/connection_adapters/abstract/query_cache.rb:56:in `select_all'
from /Library/Ruby/Gems/1.8/gems/activerecord-3.0.3/lib/active_record/base.rb:467:in `find_by_sql'
from /Library/Ruby/Gems/1.8/gems/activerecord-3.0.3/lib/active_record/relation.rb:64:in `to_a'
from /Library/Ruby/Gems/1.8/gems/activerecord-3.0.3/lib/active_record/relation/finder_methods.rb:143:in `all'
from /Library/Ruby/Gems/1.8/gems/activerecord-3.0.3/lib/active_record/base.rb:439:in `__send__'
from /Library/Ruby/Gems/1.8/gems/activerecord-3.0.3/lib/active_record/base.rb:439:in `all'
from (irb):1
模型類Old / user.rb
class Old::User < ActiveRecord::Base
establish_connection "old_database"
# Because table name is lowercase
def self.table_name()
"user"
end
end
數據庫
old_database:
adapter: mysql
database: old_database
username: root
password:
socket: /Applications/MAMP/tmp/mysql/mysql.sock
最新的MySQL gem(=> 0.3.2)需要一個額外的gem進行連接-就像在Rails以前版本中的MSSQL-Server gem一樣,它的架構也是如此。
您可能還想使用mysql2(請注意“ 2”)gem
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.