Rails：TypeError：オブジェクトはこのプロパティまたはメソッドをサポートしていません

私は最初のルビーをレールアプリにしようとしています。私はルビーでもレールでも経験がありません。私は答えを見つけようとしましたが、それは成功しませんでした。Rails：TypeError：オブジェクトはこのプロパティまたはメソッドをサポートしていません

私のエラーは次のとおりです。 C：/Sites/projects/test/app/views/layouts/application.html.erbライン＃10が提起：例外TypeError：オブジェクトはこのプロパティまたはメソッド抽出されたソースをサポートしていません。（ライン＃10前後）

マイapplication.html.erb：

<!DOCTYPE html> 
<html> 
    <head> 
    <title>Test</title> 
    <%= csrf_meta_tags %> 

<link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/bootstrap/3.0.3/css/bootstrap.css"> 
<link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/bootstrap/3.0.3/css/bootstrap-theme.css"> 

    <%= stylesheet_link_tag 'application', media: 'all', 'data-turbolinks-track': 'reload' %> 
    <%= javascript_include_tag 'application', 'data-turbolinks-track': 'reload' %> 
    </head> 

    <body> 
    <div class="container"> 
    <%= yield %> 
</div> 
    </body> 
</html>

マイgemfile：

source 'https://rubygems.org' 
    git_source(:github) do |repo_name| 
     repo_name = "#{repo_name}/#{repo_name}" unless repo_name.include?("/") 
     "https://github.com/#{repo_name}.git" 
    end 


    # Bundle edge Rails instead: gem 'rails', github: 'rails/rails' 
    gem 'rails', '~> 5.1.4' 
    # Use sqlite3 as the database for Active Record 
    gem 'sqlite3' 
    # Use Puma as the app server 
    gem 'puma', '~> 3.7' 
    # Use SCSS for stylesheets 
    gem 'sass-rails', '~> 5.0' 
    # Use Uglifier as compressor for JavaScript assets 
    gem 'uglifier', '>= 1.3.0' 
    # See https://github.com/rails/execjs#readme for more supported runtimes 
    # gem 'therubyracer', platforms: :ruby 

    # Use CoffeeScript for .coffee assets and views 
    gem 'coffee-rails', '~> 4.2' 
    # Turbolinks makes navigating your web application faster. Read more: https://github.com/turbolinks/turbolinks 
    gem 'turbolinks', '~> 5' 
    # Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder 
    gem 'jbuilder', '~> 2.5' 
    # Use Redis adapter to run Action Cable in production 
    # gem 'redis', '~> 3.0' 
    # Use ActiveModel has_secure_password 
    # gem 'bcrypt', '~> 3.1.7' 

    # Use Capistrano for deployment 
    # gem 'capistrano-rails', group: :development 

    group :development, :test do 
     # Call 'byebug' anywhere in the code to stop execution and get a debugger console 
     gem 'byebug', platforms: [:mri, :mingw, :x64_mingw] 
     # Adds support for Capybara system testing and selenium driver 
     gem 'capybara', '~> 2.13' 
     gem 'selenium-webdriver' 
    end 

    group :development do 
     # Access an IRB console on exception pages or by using <%= console %> anywhere in the code. 
     gem 'web-console', '>= 3.3.0' 
    end 

    # Windows does not include zoneinfo files, so bundle the tzinfo-data gem 
    gem 'tzinfo-data', platforms: [:mingw, :mswin, :x64_mingw, :jruby]

RoのUTEファイル：

Rails.application.routes.draw do 
    root to: redirect('/ideas') 
    resources :ideas 
    # For details on the DSL available within this file, see http://guides.rubyonrails.org/routing.html 
end

とコントローラ：

class ApplicationController < ActionController::Base 
    protect_from_forgery with: :exception 
end 

class IdeasController < ApplicationController 
    before_action :set_idea, only: [:show, :edit, :update, :destroy] 

    # GET /ideas 
    # GET /ideas.json 
    def index 
    @ideas = Idea.all 
    end 

    # GET /ideas/1 
    # GET /ideas/1.json 
    def show 
    end 

    # GET /ideas/new 
    def new 
    @idea = Idea.new 
    end 

    # GET /ideas/1/edit 
    def edit 
    end 

    # POST /ideas 
    # POST /ideas.json 
    def create 
    @idea = Idea.new(idea_params) 

    respond_to do |format| 
     if @idea.save 
     format.html { redirect_to @idea, notice: 'Idea was successfully created.' } 
     format.json { render :show, status: :created, location: @idea } 
     else 
     format.html { render :new } 
     format.json { render json: @idea.errors, status: :unprocessable_entity } 
     end 
    end 
    end 

    # PATCH/PUT /ideas/1 
    # PATCH/PUT /ideas/1.json 
    def update 
    respond_to do |format| 
     if @idea.update(idea_params) 
     format.html { redirect_to @idea, notice: 'Idea was successfully updated.' } 
     format.json { render :show, status: :ok, location: @idea } 
     else 
     format.html { render :edit } 
     format.json { render json: @idea.errors, status: :unprocessable_entity } 
     end 
    end 
    end 

    # DELETE /ideas/1 
    # DELETE /ideas/1.json 
    def destroy 
    @idea.destroy 
    respond_to do |format| 
     format.html { redirect_to ideas_url, notice: 'Idea was successfully destroyed.' } 
     format.json { head :no_content } 
    end 
    end 

    private 
    # Use callbacks to share common setup or constraints between actions. 
    def set_idea 
     @idea = Idea.find(params[:id]) 
    end 

    # Never trust parameters from the scary internet, only allow the white list through. 
    def idea_params 
     params.require(:idea).permit(:name, :description, :picture) 
    end 
end

私はすでにapplication.html.erbにデフォルトでアプリケーションを置き換えるためにしようとしました。

出典

2017-11-17 Svetlana