To enable CORS on Python Django REST Framework, we add the django-cors-headers package.
To install it, we run
python -m pip install django-cors-headers
Then we add
INSTALLED_APPS = (
...
'corsheaders',
...
)
in INSTALLED_APPS.
And add
MIDDLEWARE = [
...,
'corsheaders.middleware.CorsMiddleware',
'django.middleware.common.CommonMiddleware',
...,
]
in middleware.
Then we add
CORS_ALLOWED_ORIGINS = [
'http://localhost:3030',
]
in our Django’s config to allow CORS in the hosts listed.
To override and extend basic Python Django admin templates, we can use the extends helper.
For instance, we write
{% extends "admin:admin/index.html" %}
{% block sidebar %}
{{block.super}}
<div>
<h1>Extra links</h1>
<a href="/admin/extra/">My extra link</a>
</div>
{% endblock %}
to use extends with the admin template file we want to extend from.
And then we add our own items below the extends block.
To fix the Python Django MultiValueDictKeyError error, we use the dictionary get method to get the dict value and return a default if the dict key doesn’t exist.
For instance, we write
is_private = request.POST.get('is_private', False)
to call get on request.POST to get the is_private dict value from the POST request payload.
And if is_private wasn’t sent, then we return False.
To handle multiple forms on one page in Python Django, we can set the forms to use in our views.
For instance, we write
if request.method == 'POST':
bannedphraseform = BannedPhraseForm(request.POST, prefix='banned')
if bannedphraseform.is_valid():
bannedphraseform.save()
else:
bannedphraseform = BannedPhraseForm(prefix='banned')
if request.method == 'POST' and not bannedphraseform.is_valid():
expectedphraseform = ExpectedPhraseForm(request.POST, prefix='expected')
bannedphraseform = BannedPhraseForm(prefix='banned')
if expectedphraseform.is_valid():
expectedphraseform.save()
else:
expectedphraseform = ExpectedPhraseForm(prefix='expected')
in our view to set different forms to use according to different conditions.
We use if statements to check request methods and form validation to assign which form to render in the page.