railsで投稿アプリを作成しているのですが、実装中に以下のエラーが表示されてしまいました。自分でも出来る限り調べてみたのですが、どうしても原因がわかりませんでした。原因と解決法を教えて頂きたいです。よろしくお願いします。 ![イメージ説明](e43c58b7ef3e20fb2bdea17bb3274092.png) /config/routes.rb ``` Rails.application.routes.draw do resources :answers, :except => [:new] get 'posts' => 'posts#index' resources :posts root 'homepage#index' get 'answers/new/:postId' => 'answers#new' devise_for :users, controllers: { registrations: 'users/registrations', sessions: 'users/sessions' } # For details on the DSL available within this file, see https://guides.rubyonrails.org/routing.html end ``` /answers_controller.rb ``` class AnswersController < ApplicationController before_action :authenticate_user! before_action :set_answer, only: [:show, :edit, :update, :destroy] @@post_id = nil # GET /answers # GET /answers.json def index @posts = Post.all end # GET /answers/1 # GET /answers/1.json def show end # GET /answers/new def new @@post_id = params[:postId] @post = Post.find(@@post_id) @answer = Answer.new end # GET /answers/1/edit def edit end # POST /answers # POST /answers.json def create @answer = Answer.new(answer_params) @answer.post_id = @@post_id @answer.user_id = current_user.id respond_to do |format| if @answer.save format.html { redirect_to @answer, notice: 'Answer was successfully created.' } format.json { render :show, status: :created, location: @answer } else format.html { render :new } format.json { render json: @answer.errors, status: :unprocessable_entity } end end end # PATCH/PUT /answers/1 # PATCH/PUT /answers/1.json def update respond_to do |format| if @answer.update(answer_params) format.html { redirect_to @answer, notice: 'Answer was successfully updated.' } format.json { render :show, status: :ok, location: @answer } else format.html { render :edit } format.json { render json: @answer.errors, status: :unprocessable_entity } end end end # DELETE /answers/1 # DELETE /answers/1.json def destroy @answer.destroy respond_to do |format| format.html { redirect_to answers_url, notice: 'Answer was successfully destroyed.' } format.json { head :no_content } end end private # Use callbacks to share common setup or constraints between actions. def set_answer @answer = Answer.find(params[:id]) end # Never trust parameters from the scary internet, only allow the white list through. def answer_params params.require(:answer).permit(:user_id, :post_id, :body) end end ``` /views/answers/index.html.erb ```

Answers

現在回答募集中の質問一覧です

<% @posts.each do |post| %>

<%= post.title %>

<%= post.body %>

<%= link_to '回答する', "/answers/new/#{post.id}" %>

<% end %>

``` /views/answers/new.html.erb ```

New Answer

質問情報

タイトル：<%= @post.title %>
内容：<%= @post.body %>
<%= render 'form', answer: @answer %> <%= link_to 'Back', answers_path %> ``` /db/migrate/20200114053234_create_posts.rb ``` class CreatePosts < ActiveRecord::Migration[6.0] def change create_table :posts do |t| t.references :user, null: false, foreign_key: true t.string :image t.string :title t.text :body t.timestamps end end end ``` /db/migrate/20200114085203_create_answers.rb ``` class CreateAnswers < ActiveRecord::Migration[6.0] def change create_table :answers do |t| t.references :user, null: false, foreign_key: true t.references :post, null: false, foreign_key: true t.text :body t.timestamps end end end ``` /models/answer.rb ``` class Answer < ApplicationRecord belongs_to :user belongs_to :post end ``` /models/post.rb ``` class Post < ApplicationRecord belongs_to :user end ```

	@@ -1 +1 @@
1	- rails 　NoMethodError
1	+ rails 　原因不明のNoMethodErrorが表示される

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