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问题描述
在一个Django模板中,有没有办法从一个有空格的键中获取值?例如,如果我有一个像:
{餐厅名称:Foo}
如何在我的模板中引用该值?伪语法可能是:
{{entry ['Restaurant Name']}}
解决方案
使用内置的标签没有干净的方法。尝试做以下事情:
{{a.'Restaurant Name}}}或{{a.Restaurant Name}}
会抛出一个解析错误。
你可以通过字典做一个循环(但是它的丑陋/低效):
{%for k,v in your_dict_passed_into_context%}
{%ifequal k餐厅名称%}
{{v}}
{%endifequal%}
{%endfor%}
自定义标签可能会更干净:
从django导入模板
register = template.Library()
@ register.simple_tag
def dictKeyLookup(the_dict,key):
#尝试从dict,如果没有找到,返回一个空字符串。
返回the_dict.get(key,'')
并在模板中使用它所以:
{%dictKeyLookup your_dict_passed_into_context餐厅名称%}
或者也可以尝试重组您的dict以使更容易使用键。
In a Django template, is there a way to get a value from a key that has a space in it?Eg, if I have a dict like:
{"Restaurant Name": Foo}
How can I reference that value in my template? Pseudo-syntax might be:
{{ entry['Restaurant Name'] }}
解决方案
There is no clean way to do this with the built-in tags. Trying to do something like:
{{ a.'Restaurant Name'}} or {{ a.Restaurant Name }}
will throw a parse error.
You could do a for loop through the dictionary (but it's ugly/inefficient):
{% for k, v in your_dict_passed_into_context %}
{% ifequal k "Restaurant Name" %}
{{ v }}
{% endifequal %}
{% endfor %}
A custom tag would probably be cleaner:
from django import template
register = template.Library()
@register.simple_tag
def dictKeyLookup(the_dict, key):
# Try to fetch from the dict, and if it's not found return an empty string.
return the_dict.get(key, '')
and use it in the template like so:
{% dictKeyLookup your_dict_passed_into_context "Restaurant Name" %}
Or maybe try to restructure your dict to have "easier to work with" keys.
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