ruby-on-rails - Rails 表单对象中数组属性的渲染字段

Question

现在我很难为里面的数组属性渲染表单字段可能是表单对象。我使用 virtus gem 来设置属性。

我的代码：

class JournalForm
  include Virtus.model

  extend ActiveModel::Naming
  include ActiveModel::Conversion
  include ActiveModel::Validations

  attribute :group_no, String
  attribute :description, String
  attribute :rank_code, String
  attribute :transaction_type, String
  attribute :type, String
  attribute :accounts, Array[JournalAccountAttribute]

  validates_presence_of :group_no, :description, :rank_code, :transaction_type,:type

end

这是 JournalAccountAttribute 类

class JournalAccountAttribute
  include Virtus.model

  attribute :account, String
  attribute :transaction_type, String
end

问题是我不知道如何在我看来呈现这个。所以我的关系是 1 Journal has_many 个帐户。

Answer 1

根据ActionView - Nested Attributes Examples文档，您的视图中的表单应如下所示：

<%= form_for @journal do |journal_form| %>
  ...
  <% @journal.journal_accounts.each do |journal_account| %>
    <% if journal_account.active? %>
      <%= journal_form.fields_for :journal_accounts, journal_account do |journal_account_fields| %>
        Account: <%= journal_account_fields.text_field :account %>
        Transaction type: <%= journal_account_fields.text_field :transaction_type %>
      <% end %>
    <% end %>
  <% end %>
  ...
<% end %>