django模板仅显示不同的值

问题描述

假设我有一个查询:

cities = City.objects.all()

在我的模板中，我已经完成:

In my template I have done:

{% for city in cities %}
    {{city.friend_name}}
    <a href="{% url "my_url" city.friend_name.id %}" class="btn btn-primary">View Detail</a>
{% endfor %}

它给我4个ID为alex 1，matt 2，mack 3，mack 3的朋友的名字.但是这里重复了mack.我只想要麦克.如果重复这些值，我希望只打印一次.

It gives me name of 4 friends with id say alex 1, matt 2, mack 3, mack 3. But here mack is repeated. I only want mack once. If the values are repeated I want it to be printed only once.

如何在模板中执行此操作.我的意思是有类似 {{city.friend_name | distinct}} 之类的东西

How can I do this in template. I mean is there something like {{city.friend_name|distinct}} or something else

我不想要独特的城市.我希望朋友在城市上的名字唯一.

I dont want unique city. I want friends name on city to be unique.

谢谢

推荐答案

为什么要在模板中执行此操作?尝试修改 cities 本身，使其具有唯一的条目.您可以将您的 list 转换为 set ，然后重新将其转换回:

Why do you want to do it in the template? Try to modify cities itself so that it has unique entries.You could convert your list to a set and then re-convert it back:

cities_unique = list(set(cities))

如果必须显示唯一属性，请使用重新组合功能

If you have to show unique attributes, use the regroup feature

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