图像未在 Rails 应用程序中呈现

Question

我是所有编程知识的初学者。我决定使用引导程序创建一个网站（或者我应该说应用程序？;p）。因为我发现 Ruby 非常有吸引力，所以我决定集成这两个框架。所以我这样做了：https://github.com/twbs/bootstrap-rubygem 一切顺利，我下载了一些引导主题，将所有文件放入我的应用程序文件，更改 index.html.erb 中的 img 路径，当我启动服务器时，我得到了一个没有任何图像的网站。我究竟做错了什么？我会给予任何帮助。

我的 index.html.erb（我从模板文件夹中复制的）

<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<meta name="description" content="">
<meta name="author" content="">

<title>Creative - Start Bootstrap Theme</title>

<!-- Bootstrap core CSS -->
<link href="test1/vendor/bootstrap/css/bootstrap.min.css" rel="stylesheet">

<!-- Custom fonts for this template -->
<link href="test1/vendor/font-awesome/css/font-awesome.min.css" rel="stylesheet" type="text/css">
<link href='https://fonts.googleapis.com/css?family=Open+Sans:300italic,400italic,600italic,700italic,800italic,400,300,600,700,800' rel='stylesheet' type='text/css'>
<link href='https://fonts.googleapis.com/css?family=Merriweather:400,300,300italic,400italic,700,700italic,900,900italic' rel='stylesheet' type='text/css'>

<!-- Plugin CSS -->
<link href="test1/vendor/magnific-popup/magnific-popup.css" rel="stylesheet">

<!-- Custom styles for this template -->
<link href="test1/assets/stylesheets/creative.min.css" rel="stylesheet">

<!-- Navigation -->
<nav class="navbar navbar-expand-lg navbar-light fixed-top" id="mainNav">
  <div class="container">
    <a class="navbar-brand js-scroll-trigger" href="#page-top">Start Bootstrap</a>
    <button class="navbar-toggler navbar-toggler-right" type="button" data-toggle="collapse" data-target="#navbarResponsive" aria-controls="navbarResponsive" aria-expanded="false" aria-label="Toggle navigation">
      <span class="navbar-toggler-icon"></span>
    </button>
    <div class="collapse navbar-collapse" id="navbarResponsive">
      <ul class="navbar-nav ml-auto">
        <li class="nav-item">
          <a class="nav-link js-scroll-trigger" href="#about">About</a>
        </li>
        <li class="nav-item">
          <a class="nav-link js-scroll-trigger" href="#services">Services</a>
        </li>
        <li class="nav-item">
          <a class="nav-link js-scroll-trigger" href="#portfolio">Portfolio</a>
        </li>
        <li class="nav-item">
          <a class="nav-link js-scroll-trigger" href="#contact">Contact</a>
        </li>
      </ul>
    </div>
  </div>
</nav>

<header class="masthead text-center text-white d-flex">
  <div class="container my-auto">
    <div class="row">
      <div class="col-lg-10 mx-auto">
        <h1 class="text-uppercase">
          <strong>Your Favorite Source of Free Bootstrap Themes</strong>
        </h1>
        <hr>
      </div>
      <div class="col-lg-8 mx-auto">
        <p class="text-faded mb-5">Start Bootstrap can help you build better websites using the Bootstrap CSS framework! Just download your template and start going, no strings attached!</p>
        <a class="btn btn-primary btn-xl js-scroll-trigger" href="#about">Find Out More</a>
      </div>
    </div>
  </div>
</header>

<section class="bg-primary" id="about">
  <div class="container">
    <div class="row">
      <div class="col-lg-8 mx-auto text-center">
        <h2 class="section-heading text-white">We've got what you need!</h2>
        <hr class="light my-4">
        <p class="text-faded mb-4">Start Bootstrap has everything you need to get your new website up and running in no time! All of the templates and themes on Start Bootstrap are open source, free to download, and easy to use. No strings attached!</p>
        <a class="btn btn-light btn-xl js-scroll-trigger" href="#services">Get Started!</a>
      </div>
    </div>
  </div>
</section>

<section id="services">
  <div class="container">
    <div class="row">
      <div class="col-lg-12 text-center">
        <h2 class="section-heading">At Your Service</h2>
        <hr class="my-4">
      </div>
    </div>
  </div>
  <div class="container">
    <div class="row">
      <div class="col-lg-3 col-md-6 text-center">
        <div class="service-box mt-5 mx-auto">
          <i class="fa fa-4x fa-diamond text-primary mb-3 sr-icons"></i>
          <h3 class="mb-3">Sturdy Templates</h3>
          <p class="text-muted mb-0">Our templates are updated regularly so they don't break.</p>
        </div>
      </div>
      <div class="col-lg-3 col-md-6 text-center">
        <div class="service-box mt-5 mx-auto">
          <i class="fa fa-4x fa-paper-plane text-primary mb-3 sr-icons"></i>
          <h3 class="mb-3">Ready to Ship</h3>
          <p class="text-muted mb-0">You can use this theme as is, or you can make changes!</p>
        </div>
      </div>
      <div class="col-lg-3 col-md-6 text-center">
        <div class="service-box mt-5 mx-auto">
          <i class="fa fa-4x fa-newspaper-o text-primary mb-3 sr-icons"></i>
          <h3 class="mb-3">Up to Date</h3>
          <p class="text-muted mb-0">We update dependencies to keep things fresh.</p>
        </div>
      </div>
      <div class="col-lg-3 col-md-6 text-center">
        <div class="service-box mt-5 mx-auto">
          <i class="fa fa-4x fa-heart text-primary mb-3 sr-icons"></i>
          <h3 class="mb-3">Made with Love</h3>
          <p class="text-muted mb-0">You have to make your websites with love these days!</p>
        </div>
      </div>
    </div>
  </div>
</section>

<section class="p-0" id="portfolio">
  <div class="container-fluid p-0">
    <div class="row no-gutters popup-gallery">
      <div class="col-lg-4 col-sm-6">
        <a class="portfolio-box" href="test1/app/assets/imgages/portfolio/fullsize/1.jpg">
          <img class="img-fluid" src="test1/app/assets/imgages/portfoliothumbnails/1.jpg" alt="">
          <div class="portfolio-box-caption">
            <div class="portfolio-box-caption-content">
              <div class="project-category text-faded">
                Category
              </div>
              <div class="project-name">
                Project Name
              </div>
            </div>
          </div>
        </a>
      </div>
      <div class="col-lg-4 col-sm-6">
        <a class="portfolio-box" href="test1/app/assets/images/portfolio/fullsize/2.jpg">
          <img class="img-fluid" src="test1/app/assets/images/portfoliothumbnails/2.jpg" alt="">
          <div class="portfolio-box-caption">
            <div class="portfolio-box-caption-content">
              <div class="project-category text-faded">
                Category
              </div>
              <div class="project-name">
                Project Name
              </div>
            </div>
          </div>
        </a>
      </div>
      <div class="col-lg-4 col-sm-6">
        <a class="portfolio-box" href="test1/app/assets/images/portfolio/fullsize/3.jpg">
          <img class="img-fluid" src="test1/app/assets/images/portfolio/thumbnails/3.jpg" alt="">
          <div class="portfolio-box-caption">
            <div class="portfolio-box-caption-content">
              <div class="project-category text-faded">
                Category
              </div>
              <div class="project-name">
                Project Name
              </div>
            </div>
          </div>
        </a>
      </div>
      <div class="col-lg-4 col-sm-6">
        <a class="portfolio-box" href="test1/app/assets/imgages/portfolio/fullsize/4.jpg">
          <img class="img-fluid" src="test1/app/assets/imgages/portfolio/thumbnails/4.jpg" alt="">
          <div class="portfolio-box-caption">
            <div class="portfolio-box-caption-content">
              <div class="project-category text-faded">
                Category
              </div>
              <div class="project-name">
                Project Name
              </div>
            </div>
          </div>
        </a>
      </div>
      <div class="col-lg-4 col-sm-6">
        <a class="portfolio-box" href="test1/assets/images/portfoliofullsize/5.jpg">
          <img class="img-fluid" src="test1/assets/images/portfoliothumbnails/5.jpg" alt="">
          <div class="portfolio-box-caption">
            <div class="portfolio-box-caption-content">
              <div class="project-category text-faded">
                Category
              </div>
              <div class="project-name">
                Project Name
              </div>
            </div>
          </div>
        </a>
      </div>
      <div class="col-lg-4 col-sm-6">
        <a class="portfolio-box" href="test1/assets/images/portfolio/fullsize/6.jpg">
          <img class="img-fluid" src="test1/assets/images/portfolio/thumbnails/6.jpg" alt="">
          <div class="portfolio-box-caption">
            <div class="portfolio-box-caption-content">
              <div class="project-category text-faded">
                Category
              </div>
              <div class="project-name">
                Project Name
              </div>
            </div>
          </div>
        </a>
      </div>
    </div>
  </div>
</section>

<section class="bg-dark text-white">
  <div class="container text-center">
    <h2 class="mb-4">Free Download at Start Bootstrap!</h2>
    <a class="btn btn-light btn-xl sr-button" href="http://startbootstrap.com/template-overviews/creative/">Download Now!</a>
  </div>
</section>

<section id="contact">
  <div class="container">
    <div class="row">
      <div class="col-lg-8 mx-auto text-center">
        <h2 class="section-heading">Let's Get In Touch!</h2>
        <hr class="my-4">
        <p class="mb-5">Ready to start your next project with us? That's great! Give us a call or send us an email and we will get back to you as soon as possible!</p>
      </div>
    </div>
    <div class="row">
      <div class="col-lg-4 ml-auto text-center">
        <i class="fa fa-phone fa-3x mb-3 sr-contact"></i>
        <p>123-456-6789</p>
      </div>
      <div class="col-lg-4 mr-auto text-center">
        <i class="fa fa-envelope-o fa-3x mb-3 sr-contact"></i>
        <p>
          <a href="mailto:your-email@your-domain.com">feedback@startbootstrap.com</a>
        </p>
      </div>
    </div>
  </div>
</section>

<!-- Bootstrap core JavaScript -->
<script src="test1/vendor/jquery/jquery.min.js"></script>
<script src="test1/vendor/bootstrap/js/bootstrap.bundle.min.js"></script>

<!-- Plugin JavaScript -->
<script src="test1/vendor/jquery-easing/jquery.easing.min.js"></script>
<script src="test1/vendor/scrollreveal/scrollreveal.min.js"></script>
<script src="test1/vendor/magnific-popup/jquery.magnific-popup.min.js"></script>

<!-- Custom scripts for this template -->
<script src="test1/app/assets/javascript/creative.min.js"></script>

Answer 1

使用辅助类：

<img class="img-fluid" src="test1/app/assets/images/portfolio/thumbnails/3.jpg" alt="">

变成

image_tag("portfolio/thumbnails/3.jpg", class: "img-fluid")

应该正确设置路径，假设文件 /app/assets/images/portfolio/thumbnails/3.jpg 存在。