Accessing django template's dictionaries given a variable?

Question

My question is if there's a way to obtain a value of a dictionary given a key. For example, imagine that my_dictionary is {1:'a', 2:'b', 3:'c'}and I have an attribute which is key which equals 1. How can I obtain 'a'? I tried with {{my_dictionary.key}}and {{my_dictionary.{{key}} }}but none of them worked. My idea is to do the same as with python, which is my_dictionary[key] but in a Django Template.

Thank you

Possible duplicate of [Django template how to look up a dictionary value with a variable](https://stackoverflow.com/questions/8000022/django-template-how-to-look-up-a-dictionary-value-with-a-variable) — Mehrdad Pedramfar, Dec 31 '18 at 10:29

score 0 · Answer 1 · answered Dec 31 '18 at 10:46

0

You can achieve this by:

{% for key, values in data.items %}
   {% if key == 1 %}
      {{ value }}
   {% endif %}
{% endfor %}

answered Dec 31 '18 at 10:46

ruddra

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Alexander Collins · Answer 2 · 2018-12-31T11:42:55.760

0

The best way to approach this is to write a custom template filter:

from django.template.defaulttags import register
register = Library()
...
@register.filter
def get_item(dictionary, key):
    # use .get so that if the key does not exist a KeyError will be raised
    return dictionary.get(key)

usage in templates:

{{ data.items|get_item:<key_variable_here> }}

edited Dec 31 '18 at 11:42

answered Dec 31 '18 at 11:23

Alexander Collins

192
10

Accessing django template's dictionaries given a variable?

2 Answers2