arrays - 如何在 Active Admin Rails 4 中保存数组？

Question

我在 Rails 4 中使用 Active Admin。在我的模型中，当我创建它在后台传递的对象时，我有一个字段是 Postgres 数组类型，但它没有保存到数据库中。那么我需要做什么才能通过 Active Admin 将数组字段保存在数据库中。

谢谢

Answer 1

你有破解的东西，因为事件管理员似乎不支持它。

虽然这个答案很旧，但它有效:How do you handle serialized edit fields in an Active Admin resource?

Here is a summary of how I handled this situation. I added an accessor to the model which can turn the Array into a string joined by a linefeed and split it back to an Array.

# app/models/domain.rb
class Domain < ActiveRecord::Base
  serialize       :names, Array
  attr_accessor   :names_raw

  def names_raw
    self.names.join("\n") unless self.names.nil?
  end

  def names_raw=(values)
    self.names = []
    self.names=values.split("\n")
  end
end

then, in my admin resource for domain, instead of using the :names field, I used the :names_raw field. setting this value would save the names Array with the new values.

# app/admin/domains.rb
form do |f|
  f.inputs "Domain" do
    f.input :names_raw, :as => :text
  end
  f.actions
end