Want to have a site with PayPal integration using Django with no fuss? That is just django-paypal’s game. I’ll show you how to integrate with Website Payments Standard in a jiffy.
pip install django-paypal
You are using pip, right? If not:
apt-get install python-setuptools
easy_install pip
Whew! Thats better. Let’s fix up your settings.py:
PAYPAL_RECEIVER_EMAIL = "yourbusinessaccount@example.com"
INSTALLED_APPS = ( ...,
'paypal.standard.ipn',
...)
Now, you’ll have to add an entry in your urls.py for the Instant Payment Notifications (IPNs) from PayPal that let you know when people have paid:
urlpatterns = patterns('',
...
url(r'^/something/hard/to/guess/, include('paypal.standard.ipn.urls')),
...
)
We need a view in views.py. That is easy too:
from django.conf import settings
...
def subscribe(request):
# What you want the button to do.
paypal_dict = {
"cmd": "_xclick-subscriptions",
"business": settings.PAYPAL_RECEIVER_EMAIL,
"a1": "0", # trial price
"p1": 1, # trial duration, duration of unit defaults to month
"a3": "29.95", # yearly price
"p3": 1, # duration of each unit (depends on unit)
"t3": "Y", # duration unit ("M for Month")
"src": "1", # make payments recur
"sra": "1", # reattempt payment on payment error
"no_note": "1", # remove extra notes (optional)
"item_name": "PayPal Shows This To The User",
"invoice": "101",
"notify_url": "http://example.com/something/hard/to/guess/",
"return_url": "http://example.com/thanks/",
"cancel_return": "http://example.com/cancel/",
"custom": request.user.username, # put whatever data you need to track things here
}
# Create the instance.
form = PayPalPaymentsForm(initial=paypal_dict, button_type="subscribe")
context = {"form": form, "encoded_email" : urlquote(settings.PAYPAL_RECEIVER_EMAIL), "paid" : request.user.get_profile().paid}
The reason I’ve included the encoded_email in the view is related to the unsubscribe button we’ll setup in a minute. The button in that view will be a subscription. You can easily modify it to be a buy now button. See the README for django-paypal. If you browse the code on github and checkout paypal.standard.forms.py you can see all the possible options for buttons.
Now we can create the template and the (optional) unsubscribe button:
{% extends "base.html" %}
{% block content %}
{% if paid %}
<h2>Thank you! You are currently subscribed.</h2>
<p id="page-intro">You can cancel anytime online using your PayPal account or from this page.
If you have any questions or problems please <a href="mailto:you@example.com">email us</a>.
</p>
<A HREF="https://www.paypal.com/cgi-bin/webscr?cmd=_subscr-find&alias={{ encoded_email }}" _fcksavedurl="https://www.paypal.com/cgi-bin/webscr?cmd=_subscr-find&alias={{ encoded_email }}"><IMG BORDER="0" SRC="https://www.paypal.com/en_US/i/btn/btn_unsubscribe_LG.gif"></A>
{% else %}
<!-- Page Head -->
<h2>Please subscribe to Example using PayPal.</h2>
<p id="page-intro">You can cancel anytime online using your PayPal account or on this page.
If you have any questions or problems please <a href="mailto:you@example.com">email us</a>.
</p>
{{ form.render }}
{% endif %}
{% endblock %}
Keying off of if the user has paid or not means we can use this template for subscribing or unsubscribing. Now go get paid!
will be more resourceful and better able to list alternatives because they can become consumed by solving particular problems. Brainstorming and resourcefulness are (like much else) the products of practice.