是否可以使用 Ohm 和 Redis DB is Ruby 更新模型属性？

Question

我第一次了解 Monk 和 Ohm/Redis API，我有一个简单的问题。是否可以使用 Ohm/Redis 更新模型对象的属性？

class Event < Ohm::Model
  attribute :name
  index :name
end

Event.create(:name => "A mistake made here...")

@event = Event.find(:id, 25)
@event.name = "I want to edit my mistake... but do not know how"
@event.save

使用 Ohm API 我可以执行以下操作

require 'ohm'
Ohm.connect
Ohm.redis.set :foo, "bar"
Ohm.redis.set :foo, "bat"

似乎无法在文档中找到有关如何完成此操作的任何信息。提前致谢！

Answer 1

我不确定我是否完全理解您所问的问题，但使用以下代码更新了属性。

require 'rubygems'
require 'ohm'

Ohm.connect

class Event < Ohm::Model
  attribute :name
  index :name
end

Event.create(:name => "A mistake made here...")

@event = Event.find(:name => "A mistake made here...").first
puts @event.inspect
@event.name = "I want to edit my mistake... but do not know how"
@event.save
puts @event.inspect

@event2 = Event.find(:name => "I want to edit my mistake... but do not know how").first
puts @event2.inspect

然后我得到：

#<Event:1 name="A mistake made here...">
#<Event:1 name="I want to edit my mistake... but do not know how">
#<Event:1 name="I want to edit my mistake... but do not know how">

所以名称属性已更新。

Answer 2

您应该能够使用常规的#save 来完成此操作。您可以发布更多上下文来找出它不起作用的原因吗？

event = Event[25]
event.name = "Updated name"
event.save