使用变量访问Django模板中的dictionary元素 [英] Access a dictionary element in the Django template with a variable

问题描述

情况如下.我们渲染一个视图.

The situation is the following. We render a view.

返回渲染(请求，'test.html'，{'db_object':db_object，'dict':dict}

在模板中，我们现在要使用 db_object.key 访问字典.在python中，您通常会执行 dict [db_object.key] .在模板中，您可以执行 {{dict.some_key}} 来访问值.但是在以下情况下，您显然无法执行 {{dict.db_object.key}}

In the template we would now like to access the dictionary with db_object.key. In python you would normally do dict[db_object.key]. In the template you could do {{ dict.some_key }} to access the value. But in the following situation you obviously can't do {{ dict.db_object.key }}

有没有办法做到这一点?

Is there a way to accomplish this?

推荐答案

之前已经介绍过，我发现的最佳解决方案是

This has been covered before, and the best solution I've found is to create a quick custom filter. In case that link goes dead, here's the code (which I did not write, but am providing as reference):

@register.filter 
def get_item(dictionary, key): return dictionary.get(key)

在模板中:

{{ dict|get_item:object.key }}

当然，请确保在模板标签上调用load，以便渲染器可以看到它们.

Of course, make sure to call load on your template tags so they're visible to the renderer.

这篇关于使用变量访问Django模板中的dictionary元素的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！