你可以像這樣創建和初始化一個ActiveRecord對象嗎?我需要一個連接來使用ActiveRecordObject.new嗎?
exercise = Exercise.new
exercise.name = "foo"
exercise.description = "bar"
exercise.unit_id = 123
我試圖做到這一點,我不斷收到
ActiveRecord::ConnectionNotEstablished - ActiveRecord::ConnectionNotEstablished:
/usr/lib/ruby/1.8/active_record/connection_adapters/abstract/connection_pool.rb:326:in `retrieve_connection'
/usr/lib/ruby/1.8/active_record/connection_adapters/abstract/connection_specification.rb:123:in `retrieve_connection'
/usr/lib/ruby/1.8/active_record/connection_adapters/abstract/connection_specification.rb:115:in `connection'
/usr/lib/ruby/1.8/active_record/base.rb:1271:in `columns'
/usr/lib/ruby/1.8/active_record/base.rb:3014:in `attributes_from_column_definition_without_lock'
/usr/lib/ruby/1.8/active_record/locking/optimistic.rb:55:in `attributes_from_column_definition'
/usr/lib/ruby/1.8/active_record/base.rb:2434:in `initialize'
main.rb:14:in `new'
我只是想創建和初始化,然後調用對象的一個方法.save
。如果我錯誤地解決了這個問題,請告訴我。
+1迄今爲止唯一回答問題的答案。 :) – 2011-03-08 05:43:43
感謝您的答案。我創建了一個save_to_database()方法來打開一個連接並將該對象保存到正確的表中。我沒有意識到AR需要閱讀表格以瞭解它具有哪些列。 – 2011-03-08 12:44:11