擅长:python、mysql、java
<p>Django <a href="https://docs.djangoproject.com/en/1.9/topics/forms/media/#extend" rel="nofollow">documentation</a>上写着:</p>
<blockquote>
<p>By default, any object using a static Media definition will inherit all the assets associated with the parent widget. This occurs regardless of how the parent defines its own requirements. For example, if we were to extend our basic Calendar widget from the example above:</p>
</blockquote>
<p>您可以在媒体类中设置<code>extend = False</code>,以生成不带继承值的<code>media</code>变量。在</p>
<pre><code>class OpenLayersWidgetHttps(OpenLayersWidget):
class Media:
extend = False
js = (
'https://cdnjs.cloudflare.com/ajax/libs/openlayers/2.13.1/OpenLayers.js',
'gis/js/OLMapWidget.js',
)
</code></pre>