ruby-on-rails – Rails参数不会传递给’params’变量

基本上,我有两个型号,Card和CardCollection.
CardCollections has_many卡.
我用嵌套属性实现了这种关系.

class Card < ActiveRecord::Base
  belongs_to :card_collection
end

class CardCollection < ActiveRecord::Base
  has_many :uploaded_cards,class_name: 'Card',dependent: :destroy
  accepts_nested_attributes_for :uploaded_cards,allow_destroy: true
end

形式如下.

<%= form_for @card_collection,options do |f| %>
  <%= f.fields_for :uploaded_cards do |ff| %>
    <%= render 'cards/card_form',f: ff %>
  <% end %>
<% end %>

当我在表单中放入一些数据并按下提交按钮时,我可以看到参数正确传递给服务器. (根据服务器日志)

Parameters: {"utf8"=>"?","authenticity_token"=>"YFn7RsQzR4Sq1bjR+mOhCASWmeqAxw9B30oAHCL
9qzk=","card_collection"=>{"collectible_id"=>"16","collectible_type"=>"Scrapbook","uplo
aded_cards_attributes"=>{"0"=>{"_destroy"=>"false","image_url"=>"https://s3-ap-northeast-
1.amazonaws.com/bucketplace/uploads/image_content/src/2833/2b67142422.jpg","place"=>"1","style"=>"0","description"=>"??? ??......","id"=>"97"},"1"=>{"image_url"=>"http://
hodoli.s3.amazonaws.com/uploads%2F14_06_02_17_17_56_62276930_468703135.jpg","place"=>"7","style"=>"1","description"=>"123"}}},"project_cover_image_url"=>"","commit"=>"??","
id"=>"16"}

但是当我在程序代码中真正打印’params’变量时,params [：card_collection] [：uploaded_cards_attributes] hash(嵌套属性部分)突然丢失.所以打印的params值如下所示.

"params=  {"utf8"=>"?","_method"=>"patch","authenticity_token"=>"YFn7RsQzR4Sq
1bjR+mOhCASWmeqAxw9B30oAHCL9qzk=","card_collection"=>{"collectible_id"=>16,"collec
tible_type"=>"Scrapbook"},"project_cover_image_url"=>"","commit"=>"??","a
ction"=>"update","controller"=>"card_collections","id"=>"16"}"
Unpermitted parameters: collectible_id,collectible_type

我不知道为什么会这样.我认为它与’强参数’没有关系,因为问题出在Rails端参数解析部分. (我认为)
请帮我找到确切的问题和解决方案.

编辑

这是我的控制器代码

class CardCollectionsController < ApplicationController
before_action :set_card_collection,only: [:do_upload,:edit,:update]
before_action :authenticate_user!,only: [:upload,:do_upload,:update]
before_action :authenticate_card_collection_owner!,:update]

# GET /card_collections/upload_select
def upload_select
end

# GET /card_collections/upload
def upload
    @card_collection = CardCollection.new
end

def do_upload
    respond_to do |format|
        p card_collection_params
        if @card_collection.update(card_collection_params)
            format.html do
                @card_collection.collectible.update(cover_image_url: params[:project_cover_image_url]) unless params[:project_cover_image_url].blank?
                redirect_to @card_collection.collectible,notice: 'CardCollection was successfully updated.'
            end
            format.json { head :no_content }
        else
            @card_collection = CardCollection.new(card_collection_params)
            format.html { render 'upload',alert: '??' }
            format.json { render json: @card_collection.errors,status: :unprocessable_entity }
        end
    end
end

# GET /card_collections/1/edit
def edit
end

# PATCH/PUT /card_collections/1
# PATCH/PUT /card_collections/1.json
def update
    respond_to do |format|
        if @card_collection.update!(card_collection_params)
            format.html do
                @card_collection.collectible.update(cover_image_url: params[:project_cover_image_url]) unless params[:project_cover_image_url].blank?
                redirect_to @card_collection.collectible,notice: 'CardCollection was successfully updated.'
            end
            format.json { head :no_content }
        else
            format.html { render 'edit',status: :unprocessable_entity }
        end
    end
end

private

# Use callbacks to share common setup or constraints between actions.
def set_card_collection
    if params[:id]
        @card_collection = CardCollection.find(params[:id])
        params[:card_collection] = {collectible_id: @card_collection.collectible_id,collectible_type: @card_collection.collectible_type}
    elsif params[:card_collection][:collectible_id].blank?
        @card_collection = CardCollection.new(card_collection_params)
        flash.now[:alert] = '????? ??? ???'
        render 'upload'
    else
        @card_collection = CardCollection.find_by_collectible_id_and_collectible_type(params[:card_collection][:collectible_id],params[:card_collection][:collectible_type])
    end
end

# Never trust parameters from the scary internet,only allow the white list through.
def card_collection_params
    params.require(:card_collection).permit(CardCollection.param_names + [uploaded_cards_attributes: Card.param_names])
end

def authenticate_card_collection_owner!
    redirect_to previous_url if current_user != @card_collection.user
end
end

class CardCollection < ActiveRecord::Base
def self.param_names
    [:id,:name,:description]
end
end

class Card < ActiveRecord::Base
    def self.param_names
    [:id,:image_url,:description,:place,:style,:source,:width,:height]
end
end

解决了
最后,由于@Rich Peck,我解决了这个问题.
真正的问题是关于Rails的路由部分.
我在一个控制器中通过两种方式识别特定记录,如’set_card_collection’方法中所示.

resources :card_collection,only: [:edit,:update] do
  get :upload,on: :collection
  patch :do_upload,on: :collection 
end

原始route.rb文件看起来像上面.
我构建了我的路由文件(当用户连接上传页面时不指定CardCollection id),以便用户灵活地在上传页面中选择CardCollection.
但是要连接编辑页面,用户必须指定记录ID,例如/ card_collection / 1 / edit,因为它是Rails的默认行为.

然后我在控制器中定制了’set_card_collection’方法.

if params[:id]
        @card_collection = CardCollection.find(params[:id])
        params[:card_collection] = {collectible_id: @card_collection.collectible_id,params[:card_collection][:collectible_type])

尽管如此,我不知道确切原因,但使用默认值：编辑和：更新路由设置导致嵌套参数无法正确传递的问题.所以在我改变了我的route.rb文件之后,统一识别记录的方式,问题就解决了.

resources :card_collections,only: [] do
    get :upload_select,on: :collection
    get :upload,on: :collection
    post :upload,on: :collection,to: :do_upload
    get :edit,on: :collection
    patch :update,on: :collection
    put :update,on: :collection
end