Bitcoin application integration for Django web framework
django-bitcoin is a Django web framework application for building Bitcoin web apps.
To install, just add the app to your settings.py INSTALLED_APPS like:
INSTALLED_APPS = [ ... 'django_bitcoin', ... ] ```
Also you have to run a local bitcoind instance, and specify connection string in settings:
BITCOIND_CONNECTION_STRING = "http://bitcoinuser:password@localhost:8332"
You can use the Wallet class to do different bitcoin-moving applications. Typical example would be a marketplace-style site, where there are multiple sellers and buyer. Or job freelance site, where escrow is needed. Or even an exchange could be done with this abstraction (a little extra classes would be needed however).
Note that while you move bitcoins between Wallet-objects, only bitcoin transactions needed are incoming and outgoing transactions. Transactions between the system “Wallet”-objects don’t generate “real” bitcoin transactions. Every transaction (except incoming transactions) is logged to WalletTransaction object to ease accounting.
This also means that outgoing bitcoin transactions are “mixed”:
from django_bitcoin import Wallet, currency class Profile(models.Model): wallet = ForeignKey(Wallet) outgoing_bitcoin_address = CharField() class Escrow(models.Model): wallet = ForeignKey(Wallet) buyer_happy = BooleanField(default=False) buyer=Profile.objects.create() seller=Profile.objects.create() purchase=Escrow.objects.create() AMOUNT_USD="9.99" m=currency.Money(AMOUNT_USD, "USD") btc_amount=currency.exchange(m, "BTC") print "Send "+str(btc_amount)+" BTC to address "+buyer.wallet.receiving_address() sleep(5000) # wait for transaction if p1.wallet.total_balance()>=btc_amount: p1.send_to_wallet(purchase, btc_amount) sleep(1000) # wait for product/service delivery if purchase.buyer_happy: purchase.wallet.send_to_wallet(seller.wallet) seller.wallet.send_to_address(seller.outgoing_bitcoin_address, seller.wallet.total_balance()) else: print "WHY U NO HAPPY" #return bitcoins to buyer, 50/50 split or something
To enable bitcoin transaction notifications, set the following flag in your settings.py:
BITCOIN_TRANSACTION_SIGNALING = True
After that, you need to setup a cron job to run each minute, something like the following:
* * * * * (cd $APP_PATH && python manage.py python manage.py CheckTransactions >> $APP_PATH/logs/email_sends.log 2>&1)
After that you can define your balance_changed and balance_changed_confirmed signals:
from django_bitcoin.models import balance_changed, balance_changed_confirmed from django.dispatch import receiver @receiver(balance_changed) def balance_changed_handler(sender, **kwargs): pass # try: # print "balance changed", sender.id, kwargs["changed"], sender.total_balance() @receiver(balance_changed_confirmed) def balance_changed_confirmed_handler(sender, **kwargs): pass
Currently django-bitcoin is used at production in
More to come!
If you have a site using django-bitcoin, drop me an email and I will link to it here.