内联CSS background:url()在Jinja2模板中不起作用 [英] Inline CSS background:url() not working in Jinja2 template

问题描述

我在使Bootstrap Carousel响应并缩放动态图像的高度和宽度时遇到问题.我发现的一种解决方法是使用:background: url(path_to_image.jpg) no-repeat center center;，其中似乎可以正常工作.

现在，我正在尝试将代码分解到Flask/Jinja应用程序中:

 #hp {
    height: 250px;
    width: 100%;
    background-color: gray;
  /*  background: url(https://ununsplash.imgix.net/photo-1427348693976-99e4aca06bb9) no-repeat center center; */
    background-size: cover;
} 

 <div id="hp" class="carousel slide" data-ride="carousel">
    <!-- Indicators -->
    <ol class="carousel-indicators">
        <li data-target="#hp" data-slide-to="0" class="active"></li>
        <li data-target="#hp" data-slide-to="1"></li>
    </ol>
    <!-- Wrapper for slides -->
    <div class="carousel-inner">
        <!-- Wrap slides 1 -->
        <div class="item active">
          <div style="background: url(https://ununsplash.imgix.net/photo-1427348693976-99e4aca06bb9) no-repeat center center / cover;">
              </div>
        </div>
        <!-- Wrap slides 2 -->
        <div class="item"></div>
    </div>
    <!-- codes for Controls follows -->
</div> 

对于真实代码，我尝试了以下变体:

<img src="{{url_for('.static', filename='img/works2_big.jpg')}}" class="center-block">

和这个:

<div style="background: url(../static/img/works2_big.jpg) no-repeat center center;">
</div>

我什至对此也持弹道态度.

<div style="background: url({{url_for('.static', filename='img/works2_big.jpg')}}) no-repeat center center"></div>

仍然没有显示.我使用的Flask蓝图的静态文件定义正确，并包含我的工作CSS和JS文件.

main = Blueprint('main', __name__, template_folder='templates', static_folder='static')

还有另一种方法可以正确地将此内联CSS插入Jinja吗?

解决方案

尝试一下:

<img src="background-image: url({% static 'img/works2_big.jpg' %})" class="center-block">

I'm having problem making the Bootstrap Carousel responsive and scaling height and width of dynamic images. One work around I found was to use: background: url(path_to_image.jpg) no-repeat center center; which seems to work okay.

Now, I'm trying to factor the code into a Flask/Jinja application:

#hp {
    height: 250px;
    width: 100%;
    background-color: gray;
  /*  background: url(https://ununsplash.imgix.net/photo-1427348693976-99e4aca06bb9) no-repeat center center; */
    background-size: cover;
}

<div id="hp" class="carousel slide" data-ride="carousel">
    <!-- Indicators -->
    <ol class="carousel-indicators">
        <li data-target="#hp" data-slide-to="0" class="active"></li>
        <li data-target="#hp" data-slide-to="1"></li>
    </ol>
    <!-- Wrapper for slides -->
    <div class="carousel-inner">
        <!-- Wrap slides 1 -->
        <div class="item active">
          <div style="background: url(https://ununsplash.imgix.net/photo-1427348693976-99e4aca06bb9) no-repeat center center / cover;">
              </div>
        </div>
        <!-- Wrap slides 2 -->
        <div class="item"></div>
    </div>
    <!-- codes for Controls follows -->
</div>

For the real code, I've tried the following variations:

<img src="{{url_for('.static', filename='img/works2_big.jpg')}}" class="center-block">

and this one:

<div style="background: url(../static/img/works2_big.jpg) no-repeat center center;">
</div>

I even went ballistic on this one:

<div style="background: url({{url_for('.static', filename='img/works2_big.jpg')}}) no-repeat center center"></div>

still no show. I'm using a Flask blueprint with my static file well defined and contained my working css and js files.

main = Blueprint('main', __name__, template_folder='templates', static_folder='static')

Is there another way I can correctly insert this inline css into jinja?

解决方案

Try this:

<img src="background-image: url({% static 'img/works2_big.jpg' %})" class="center-block">

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