Question

我正在运行Rails 4.2.3。我有一个模型Volunteer，带有序列化属性participated。创建对象后，我无法更新participated属性：

> @volunteer = Volunteer.new( participated: {'citizenship' => '', 'daca' => ''} )
 => #<Volunteer id: 1, participated: {'citizenship' => '', 'daca' => ''}>

> @volunteer.participated['citizenship'] = 'test'
 => {'citizenship' => 'test', 'daca' => ''}

> @volunteer
 => #<Volunteer id: 1, participated: {'citizenship' => 'test', 'daca' => ''}>

> @volunteer.changed?
 => true

> @volunteer.save
 => true

> Volunteer.last
 => #<Volunteer id: 1, participated: {'citizenship' => '', 'daca' => ''}>

如您所见，数据库未更新。我原来是运行rails 4.2.0。那时，changed?甚至没有返回true - 在这种情况下，它正在返回false。经过一番搜索，GitHub上的this pull request让我怀疑这个问题可能是一个Rails错误。更新到rails 4.2.3修复了changed?的问题，但数据库仍未更新。

任何建议都将不胜感激！到目前为止，我已经陷入了几个小时。

它的价值：

class Volunteer < ActiveRecord::Base
  serialize :participated
end

class CreateVolunteers < ActiveRecord::Migration
  def change
   create_table :volunteers do |t|
     t.text :participated
     t.timestamps null: false
   end
  end
end

Rails 4.2.3序列化模型属性不更新

0 个答案: