Rails的属性头痛 [英] Rails attributes headache

问题描述

新手轨的问题上来。

我有一类这样的：

class Thing < ActiveRecord::Base
    attr_accessible :name
    attr_accessor :name
    validates_uniqueness_of :name, :case_sensitive => false
end

我已经做了迁移和表没问题。然后，我火了轨控制台和尝试以下操作：

t = Thing.new(:name => "test")
=> #<Thing id: nil, name: nil, description: nil, created_at: nil, updated_at: nil> 

已经在这里说的名字是零，为什么呢？ 继续，我试试这个：

already here it says name is nil, why? Continuing on, I try this:

t.name
 => "test"

现在的名字好像是无论如何设置？ 如果我试图保存：

Now name seems to be set anyway? If I try to save:

t.save!
Thing Exists (8.0ms)  SELECT 1 AS one FROM "things" WHERE LOWER("things"."name") = LOWER('test') LIMIT 1
SQL (16.0ms)  INSERT INTO "things" ("created_at", "description", "name", "updated_at") VALUES ('2012-10-28 16:10:12.701000', NULL, NULL, '2012-10-28 16:10:12.701000')
=> true 

为什么这个名字我指定不被保存？ 我要的是能够调用new时指定的属性散列，然后保存该实例。

Why is the name I have specified not being saved? What I want is to be able to specify attributes as a hash when calling new and then save the instance.

推荐答案

您应该删除 attr_accessor：名称，这个创建的getter和放大器; setter方法​​名称，但他们已经创建的ActiveRecord的

You should remove attr_accessor :name, this create getter & setter for name, but they are already created by ActiveRecord

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