是否可以使用ohm和redis db更新模型属性？

Question

我要先看看和尚和ohm/redis apis，我有一个简单的问题。是否可以使用ohm/redis更新模型对象上的属性？

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

使用欧姆API我可以做以下

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实现这一目标的任何信息。提前致谢！

Answer 1

我不确定我完全了解您在问什么，但是有了以下代码，属性已更新。

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">

因此名称属性已更新。

Answer 2

您应该可以使用常规 #save. 。您可以发布更多上下文以找出为什么它不起作用吗？

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