OOP中的Ruby on Rails和组合：如何访问simple_form中的属性？

Question

我正在填写注册表格，并且有一个名为ManagedCompany的类，该类具有名为Company的公司的属性。 Company类具有另一个名为Address的类的属性。 因此，这些类别中有一些作品。

这些类如下所示：

app / models / managed_company.rb

class ManagedCompany
  include ActiveModel::Model

  def initialize
    @company = Company.new
  end

  attr_accessor :name, :string
  attr_accessor :company, :Company

end

app / models / company.rb

class Company
  include ActiveModel::Model

  def initialize
    @address = Address.new
  end

  attr_accessor :category, :string
  attr_accessor :name, :string
  attr_accessor :address, :Address

  validates_presence_of :category
  validates_presence_of :name

end

app / models / address.rb

class Address
  include ActiveModel::Model

  attr_accessor :street, :string
  attr_accessor :number, :string

  validates_presence_of :street
  validates_presence_of :number

end

我的表格：

<%= simple_form_for @managed_company do |form| %>

  <%= form.input :company.address.street, autofocus: true %>

<% end %>

但是这种方式行不通。 错误信息：

undefined method `address' for :company:Symbol

那么，如何使用形式（rails上的ruby的simple_form），如何从地址对象访问属性street？

编辑：添加控制器代码

app / controllers / managed_companies_controller.rb

class ManagedCompaniesController < ApplicationController

  def new
    @managed_companies = ManagedCompanies.new
  end

  def create
    @managed_companies = ManagedCompanies.new(secure_params)
    if @managed_companies.valid?

    else
      render :new
    end
  end

  private

  def secure_params
    params.require(:managed_companies).permit(:name)
  end

end

app / controllers / companies_controller.rb

class CompaniesController < ApplicationController

  def new
    @company = Company.new
  end

  def create
    @company = Company.new(secure_params)
    if @company.valid?

    else
      render :new
    end
  end

  private

  def secure_params
    params.require(:company).permit(:name)
  end

end

app / controllers / addresses_controller.rb

class AddressesController < ApplicationController

  def new
    @address = Address.new
  end

  def create
    @address = Address.new(secure_params)
    if @address.valid?

    else
      render :new
    end
  end

  private

  def secure_params
    params.require(:address).permit(:street)
  end

end

Answer 1

 <%= form.input @company.address.street, autofocus: true %>