How to look up a dictionary value with a variable in Django template

0 votes

The regular way to lookup a dictionary value in a Django template is {{ mydict.key1 }}, {{ mydict.key2 }}. What if the key is a loop variable? ie:

{% for item in list %} # where item has an attribute NAME
  {{ mydict.item.NAME }} # I want to look up mydict[item.NAME]
{% endfor %}
mydict = {"key1":"value1", "key2":"value2"}

mydict.item.NAME fails. How to fix this?

Aug 3, 2020 in Python by kartik
• 37,490 points
3,000 views

1 answer to this question.

0 votes

Hii @kartik,

Write a custom template filter:

from django.template.defaulttags import register
...
@register.filter
def get_item(dictionary, key):
    return dictionary.get(key)

(I use .get so that if the key is absent, it returns none. If you do dictionary[key] it will raise a KeyError then.)

usage:

{{ mydict|get_item:item.NAME }}

Hope it helps!!
Thank You!!

answered Aug 3, 2020 by Niroj
• 82,680 points

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