样式表/ css在rails中不起作用

Question

I am new to ruby on rails and trying to develop a web application, the problem is my css is not loading. I am using a free template and trying to connect it with the back end but nothing worked. Only simple html buttons/ texts are loading .

application.html.erb

<title>InstagramApp</title>
<%= stylesheet_link_tag "default", media: "all", "data-turbolinks-track" => true %>
<%= javascript_include_tag "default", "data-turbolinks-track" => true %>
<%= csrf_meta_tags %>

<!-- Navigation -->
<nav class="navbar navbar-inverse navbar-fixed-top" role="navigation">
    <div class="container">
        <!-- Brand and toggle get grouped for better mobile display -->
        <div class="navbar-header">
            <button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1">
                <span class="sr-only">Toggle navigation</span>
                <span class="icon-bar"></span>
                <span class="icon-bar"></span>
                <span class="icon-bar"></span>
            </button>
            <a class="navbar-brand" href="#">Start Bootstrap</a>
            <%= link_to "Instagram", root_url, class: "navbar-brand" %>
        </div>
        <!-- Collect the nav links, forms, and other content for toggling -->
        <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
            <ul class="nav navbar-nav">
                <li>

                    <%= link_to "New Post", new_post_path %>
                </li>
                  <%- if current_user %>
                  <% else %>
                  <li>
                        <%= link_to "Logout", new_user_session_path , method: :delete, confirm: "Are you sure?"  %> 
                  </li>
                        <%= link_to "Login", new_user_session_path %> 
                    <li>
                        <%= link_to "Register", new_user_registration_path %>
                    </li>

                    <% end %>

            </ul>
        </div>
        <!-- /.navbar-collapse -->
    </div>
    <!-- /.container -->
</nav>

<!-- Page Content -->
<div class="container">

    <div class="row">
        <div class="col-lg-12 text-center">
          <% flash.each do |a,b| %>
            <div class="alert alert-success"> <%= b %> </div>
            <% end %>
            <%= yield %>
        </div>
    </div>
</div>

<style>body{padding-top:70px;}</style>

And in app/assets/stylesheets there is bootstrap.css and bootstrap.min.css .

How do i load css in localhost?

Answer 1

如果将所有css文件放在stylesheet文件夹中，它将自动调用。如果没有，请执行rake asset：precompile并重新启动服务器。

Answer 2

If your using bootstrap elements, It will be better to install the bootstrap gem here . Easy to install and allows you to use all bootstrap components.

install the following gems:

gem 'bootstrap-sass', '~> 3.3.6'
gem 'sass-rails', '>= 3.2'

Change application.css to application.scss

app/assets/stylesheets/application.scss

In your application.scss add

@import "bootstrap-sprockets";
@import "bootstrap";

In app/assets/javascripts/application.js add

//= require jquery
//= require bootstrap-sprockets

Now you can use any bootstrap component, without needed to apply the style, this is a much better way to use bootstrap in your rails app.