如何直接與軌道

Question

寫入數據庫基本上我想繞過

def something=(string) 
... 
end 

，做

create!(:something => "direct to database") 

對於我有一個很難繞過這個功能某種原因（我在遷移中使用這個）。 感謝

Answer 1

model.update_column(:col, 'value')

Answer 2

instance.update_attribute(:something,"direct to database") # bypass validation 

或者

instance.something = "direct to database" 
instance.save(validation = false) 

或者

sql = "UPDATE models SET something = 'direct to database' WHERE id = #{object.id}" 
ActiveRecord::Base.connection.execute(sql)