javascript - How do i add a Bootstrap carousel to Ruby on rails app? -

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i new developer , trying add bootstrap carousel rails app.

this carousel trying add in particular: http://arturssmirnovs.com/blog/bootstrap-carousel-100-height-and-width/

so far i've gotten white left , right pointers show carousel (ex: navigation pointers < >)

here's html code, snabbed link above, inserted portion in about.html.erb page, static page want carousel appear in

views/layouts/staticpages/about.html.erb:

<div class="aboutslide">  <div id="mycarousel" class="carousel slide" data-ride="carousel"> <ol class="carousel-indicators"> <li data-target="#mycarousel" data-slide-to="0" class="active"></li> <li data-target="#mycarousel" data-slide-to="1"></li> <li data-target="#mycarousel" data-slide-to="2"></li> </ol> <div class="carousel-inner"> <div class="item bg bg1 active"> <div class="container"> <div class="carousel-caption"> <h1>example headline.</h1> <p>note: if you're viewing page via <code>file://</code> url, "next" , "previous" glyphicon buttons on left , right might not load/display due web browser security rules.</p> <p><a class="btn btn-lg btn-primary" href="#" role="button">sign today</a></p> </div> </div> </div> <div class="item bg bg2"> <div class="container"> <div class="carousel-caption"> <h1>another example headline.</h1> <p>cras justo odio, dapibus ac facilisis in, egestas eget quam. donec id elit non mi porta gravida @ eget metus. nullam id dolor id nibh ultricies vehicula ut id elit.</p> <p><a class="btn btn-lg btn-primary" href="#" role="button">learn more</a></p> </div> </div> </div> <div class="item bg bg1"> <div class="container"> <div class="carousel-caption"> <h1>one more measure.</h1> <p>cras justo odio, dapibus ac facilisis in, egestas eget quam. donec id elit non mi porta gravida @ eget metus. nullam id dolor id nibh ultricies vehicula ut id elit.</p> <p><a class="btn btn-lg btn-primary" href="#" role="button">browse gallery</a></p> </div> </div> </div> </div> <a class="left carousel-control" href="#mycarousel" data-slide="prev"><span class="glyphicon glyphicon-chevron-left"></span></a> <a class="right carousel-control" href="#mycarousel" data-slide="next"><span class="glyphicon glyphicon-chevron-right"></span></a> </div>  </div>

here app/assets/stylesheets/carousel.css file:

html, body {     height:100%;     margin:0;     padding:0; }     .carousel, .item, .active {     height:100%; } .carousel-inner {     height:100%; } .carousel {     margin-bottom: 60px; } .carousel-caption {     z-index: 10; } .carousel .item {     background-color: #777; } .carousel .carousel-inner .bg {     background-repeat:no-repeat;     background-size:cover; } .carousel .carousel-inner .bg1 {     background-image:url(bg1.jpg);     background-position: center top; } .carousel .carousel-inner .bg2 {     background-image:url(bg2.jpg);     background-position: center center; } .carousel .carousel-inner .bg3 {     background-image:url(bg3.jpg);     background-position: center bottom; }  @media (min-width: 768px) {     /* bump size of carousel content */   .carousel-caption p {     margin-bottom: 20px;     font-size: 21px;     line-height: 1.4;   } }

and there docs.js file have inserted in apps/assets/javascripts/docs.js. can't post because file big.

the issue button images need add images app/assets/images directory , change css use rails asset_path helper:

.carousel .carousel-inner .bg {     background-repeat:no-repeat;     background-size:cover; } .carousel .carousel-inner .bg1 {     background-image:url(<%= assets_path 'bg1.jpg' %>);     background-position: center top; } .carousel .carousel-inner .bg2 {     background-image:url(<%= assets_path 'bg2.jpg' %>);     background-position: center center; } .carousel .carousel-inner .bg3 {     background-image:url(<%= assets_path 'bg3.jpg' %>);     background-position: center bottom; }

this uses erb (embedded ruby) add correct url in stylesheet. can change extension of file '.css.scss' , use sass-rails helpers.

.carousel.carousel-inner {   .bg {     background-repeat:no-repeat;     background-size:cover;   }   .bg1 {     background-image:url( image-url('bg1.jpg') );     background-position: center top;   }     .bg2 {     background-image:url( image-url('bg2.jpg') );     background-position: center center;   }   .bg3 {     background-image:url( image-url('bg3.jpg') );     background-position: center bottom;   } }

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