嵌套参数，具有一对一的多态性

Question

我遇到了一个问题，我尝试像往常一样在我的 #new-action 中使用表单向一个人添加地址。
我目前正在做的是

class Person < ActiveRecord::Base
  has_one :address, :as => :owner

  accepts_nested_attributes_for :address
end

class Address < ActiveRecord::Base
  belongs_to :owner, :polymorphic => true
end

在我的表单中，我使用 form_for @person do |f| - 然后是表单，然后是 f.fields_for :address do |af| 和字段，使用 af.text_field.

我的控制器操作：

def create
  person = Person.new(person_params)

  if person.valid?
    person.save
    redirect_to edit_content_person_path(@current_work_context, person)
  else
    @person = person
    render 'new'
  end
end

def person_params
    params.require(:person).permit( :name, :address => [:line_one, :line_two, :zipcode, :city])
end

当我使用这些参数提交表单时：

{"utf8"=>"✓",
 "authenticity_token"=>"blablabla==",
 "person"=>{"name"=>"mr man",
 "address"=>{"line_one"=>"test address 15",
 "line_two"=>"",
 "zipcode"=>"2600",
 "city"=>"Glostrup"}},
 "locale"=>"da",
 "context_id"=>"9"}

然而，我得到了异常：ActiveRecord::AssociationTypeMismatch

Address(#70198415678880) expected, got ActionController::Parameters(#70198414055220)

我似乎不明白为什么。

编辑 - 我的观点，简化：

<%= form_for @person do |f| %>

  <%= f.text_field :name %>

  <%= f.fields_for :address do |af| %>
    <%= af.label :address %>
    <%= af.text_field :line_one, :placeholder => "Address 1" %>
    <%= af.text_field :line_two, :placeholder => "Address 2" %>

    <%= af.label :zipcode %>
    <%= af.text_field :zipcode, :class => "form-control" %>

    <%= af.label :city %>
    <%= af.text_field :city, :class => "form-control" %>

  <% end %>

<% end %>

Answer 1

让我们尝试一件事。请和这行并重新启动你的服务器

# config/initializers/inflections.rb

ActiveSupport::Inflector.inflections do |inflect|'
  inflect.irregular 'address', 'addresses'
end

编辑

# after we discussing more about the problem in chat we found the solution. 
# The object 'Person' not initialize correctly to f.fields_for :address

# view

<% f.object.build_address if f.object.address.blank? %> #add this line 
<%= f.fields_for :address do |af| %>

嵌套参数，具有一对一的多态性

Nested Parameters, with polymorphic one-to-one

ruby-on-rails

nested-attributes

ruby-on-rails-4

编辑