javascript - How to access environment variable from html or js in Django - Stack Overflow

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Here set environment variables using

os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'myapp.settings')

I want to display some values in UI. Is there any way to access values from DJANGO_SETTINGS_MODULE?

Here set environment variables using

os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'myapp.settings')

I want to display some values in UI. Is there any way to access values from DJANGO_SETTINGS_MODULE?

• javascript
• python
• html
• django

Share Improve this question Follow edited Jul 8, 2020 at 14:44 Zephyr 12.5k8080 gold badges5353 silver badges9191 bronze badges asked Jul 8, 2020 at 14:37 Sineth LakshithaSineth Lakshitha 71366 silver badges1616 bronze badges

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1 Answer 1

Sorted by: Reset to default 10

You can pass variable you need in a context like that

import os

from django.shortcuts import render

def your_view(request):
    return render(request, 'path/to/template.html', context={
        'YOUR_ENV_VARIABLE': os.environ.get('YOUR_ENV_VARIABLE')
    })

And then in path/to/template.html you can access that context variable. But for JS files it can get a bit tricky, although you can use {{ template syntax }} to place your variable value inside <script> tag in HTML, but it is mon to have JS externally (linked from HTML). Then you can do something like that in your HTML.

<input id="YOUR_ENV_VARIABLE" value="{{ YOUR_ENV_VARIABLE }}" type="hidden" />

And then in your JS file

let hiddenInput = document.getElementById("YOUR_ENV_VARIABLE");
let yourEnvVariableValue = hiddenInput.value;

Edit: Accesing env variables without passing it to context

You can define your own template tags. Example:

# your_app/templatetags/env_extras.py

import os
from django import template

register = template.Library()


@register.simple_tag
def get_env_var(key):
    return os.environ.get(key)

And then in your HTML:

{% load env_extras %}

<input id="YOUR_ENV_VARIABLE" value="{% get_env_var 'YOUR_ENV_VARIABLE' %}" type="hidden" />

P.S. You might need to reload your server manually in order for custom tag to take effect.

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