1
這裏的佈局： 
下面是代碼：代碼重複
#base.html
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>{% block title %}{% endblock %}</title>
</head>
<body>
<div id="content">
<div id="l_col">
{% block left %}{% endblock %}
</div>
<div id="r_col">
{% block right %}{% endblock %}
</div>
</div>
</body>
</html>
#views.py
def list(request):
vars = RequestContext(request, {
'news': News.objects.all(),
'top_news': News.news_manager.get_top_news()
})
return render_to_response('news/list.html', vars)
def view(request, id):
vars = RequestContext(request, {
'news': News.objects.filter(id = id),
'top_news': News.news_manager.get_top_news()
})
return render_to_response('news/view.html', vars)
#news/list.html and news/view.html
{% extends 'base.html' %}
{% block left %}
<!-- loop for news -->
{% endblock %}
{% block right %}
<!-- loop for top news -->
{% endblock %}
正如你看到的方法變量「top_news」重複：「名單」，「瀏覽」，並在2個模板相同的環路頂新聞
如何消除這種重複的代碼？