我尝试了rails 4.1的新枚举功能并且遇到了一些麻烦.
我的模型看起来像这样：
class Report < ActiveRecord::Base
after_save :notify_clients
before_update :update_progress
before_create do
self.status ||= 'started'
end
enum status: %w{started active fail success}
#...
end
如果我尝试在我看来这样使用它：
.item{class: @report.status,data: {id: @report.id}}
我会在浏览器中看到这个
<div class="item" data-id="25">
我试图找出使用rails console的实际状态：
[11] pry(main)> Report.all.sample.status
Report Load (0.3ms) SELECT `reports`.* FROM `reports`
=> nil
[12] pry(main)> Report.all.sample.status
Report Load (0.2ms) SELECT `reports`.* FROM `reports`
=> nil
[13] pry(main)> Report.all.sample.status
Report Load (0.3ms) SELECT `reports`.* FROM `reports`
=> nil
[14] pry(main)> Report.all.sample.status
Report Load (0.2ms) SELECT `reports`.* FROM `reports`
=> nil
现在看看这个：
[22] pry(main)> Report.all.sample.attributes['status']
Report Load (0.2ms) SELECT `reports`.* FROM `reports`
=> "3"
我不明白……
解决方法
我有同样的问题.之所以这是因为枚举字段在我的模式中定义为字符串而不是整数.在您的情况下,状态可能被定义为架构中的字符串.
class CreateReport < ActiveRecord::Migration
def change
create_table :reports do |t|
...
t.integer :status # if this is t.string you get the symptoms described above!
...
end
end
end