ruby-on-rails - rails 4 不允许的参数：post_detail

Question

我在控制台中收到以下错误

Unpermitted parameters: post_detail
Unpermitted parameters: post_detail

我的帖子模型有

has_many :post_details
accepts_nested_attributes_for :post_details

我的 post_detial 模型有

belongs_to :post
has_attached_file :upload

post.rb并且post_detail.rb是我的模型文件 posts_controller是控制器这是我的表格

这是我的posts_controller.rb

def create
    @post = Post.new(post_params)
    @post.build.post_detail
end
    private
      def post_params
        params.require(:post).permit(:title,:post_details => [:upload_file_name,:upload_file_size,:upload_file_content])
      end

编辑 1

<%= form_for @post,html: {multipart: true} do |f| %>
<%= f.text_field :title,placeholder: 'title' %>
<%= f.fields_for :post_detail do |uploads| %>
<%= uploads.file_field :upload %>
<% end %>
<%= f.submit 'submit' %>
<% end %>

我的后期控制器

  def new
    @post = Post.new
    @post.post_details.build
  end

  def create
    @post = Post.new(post_params)
    if @post.save
      #some flash
    end
  end

private
  def post_params
    params.require(:post).permit(:title,:post_details_attributes => [:id, :upload_file_name,:upload_file_size,:upload_file_content,:_destroy])
  end

仍然unpermitted parameters: post_details发生

Answer 1

post_details您应该在动作中构建new，然后将帖子与动作中的所有参数（包括post_details_attributes）一起保存create。

def new
  @post = Post.new
  @post.post_details.build
end

def create
  @post = Post.new(post_params)
  @post.save
end
private
  def post_params
    params.require(:post).permit(:title,:post_details_attributes => [:id, :upload_file_name,:upload_file_size,:upload_file_content, :_destroy])
  end