booktest-16模板过滤器 date length default

1.V

def temp_filter(request):
    books = BookInfo.objects.all()
    print(books)
    return render(request,'booktest/temp_filter.html',{'books':books})

2.T

    
    
    


    

        {% for book in books %}
            {% if book.id <= 2 %}
                
{{book.btitle|length}}--{{book.bpub_date|date:'Y年-m月-d日'}}
            {% else %}
                
{{book.btitle}}--{{book.bpub_date|date:'Y年-m月-d日'}}
            {% endif %}
        {% endfor %}
    
    {{content|default:'hello'}}

3.url

url(r'^temp_filter$', views.temp_filter),

4.效果