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Braintree Payments processing for Mezzanine/Cartridge

Project description

Braintree Payments processing for Mezzanine/Cartridge. Supports Django 3.2 or 4.0, Mezzanine 5.1 or newer and Cartridge 1.3 or newer.

Instructions for use

  1. Install cartridge_braintree:

    pip install cartridge_braintree
    

    If you need the correct sorting of not ASCII country names use:

    pip install cartridge_braintree[countries_utf8_sorting]
    

    This will add ‘pyuca’ to the requirements.

  2. Add ‘cartridge_braintree’ to your INSTALLED_APPS. List it higher than ‘cartridge.shop’, otherwise the cartridge_braintree template will not be selected.

  3. Set up the following settings in your settings.py or local_settings.py:

    BRAINTREE_MERCHANT_ID = <your merchant ID>
    BRAINTREE_PUBLIC_KEY = <your public key>
    BRAINTREE_PRIVATE_KEY = <your private key>
    

    Note

    When DEBUG is True the Braintree Sandbox environment will be used, otherwise the Braintree Production environment is used.

    See also https://developer.paypal.com/braintree/articles/control-panel/important-gateway-credentials

  4. cartridge_braintree uses a modified checkout form, which does the following:

    • Changes the shipping and billing country fields to a Select widget. This ensures that the country selected can be converted to a valid code for Braintree’s payment processing. The supported countries can be set in settings.SHOP_SUPPORTED_COUNTRIES, which is a list of alpha2 country codes and/or tuples in the form (alpha2, country_name).

      For example if you want to select the countries in the EU area use:

      SHOP_SUPPORTED_COUNTRIES = [
          'AL', 'AT', 'BA', 'BE', 'BG', 'CH', 'CY', 'DE', 'DK', 'EE', 'ES',
          'FI', 'FR', 'GB', 'GR', 'HR', 'HU', 'IE', 'IS', 'IT', 'LT', 'LV',
          'MK', 'MT', 'NL', 'NO', 'PL', 'PT', 'RO', 'RS', 'SE', 'SI'
       ]
      

      A pre-selected country in the select field can be specified using settings.SHOP_DEFAULT_COUNTRY as an alpha2 code. By default the user is expected to choose their country (set to None).

      The country/countries (as alpha2 codes) listed in settings.SHOP_PRIMARY_COUNTRIES will show up at the top of the country selection fields, after the settings.SHOP_DEFAULT_COUNTRY if set.

    • Credit Card number and CCV fields are rendered using the NoNameTextInput widget so that the data is not submitted to the server. Javascript processes these fields to create a payment_method_nonce, which is then stored in a hidden form element.

    • Uses jquery.payment from stripe for client-side validation of the payment form and submits the errors in the hidden braintree_errors field to the server to handle them as Django errors.

    See https://developer.paypal.com/braintree/docs/guides/transactions/python

  5. Set the payment handler to be the Braintree payment handler:

    SHOP_HANDLER_PAYMENT = 'cartridge_braintree.braintree_payment.payment_handler'
    

    If you are overriding the templates in your own apps, then be sure to include the relevant braintreejs.html template.

  6. Include cartridge_braintree.urls for shop/checkout in urls.py before Cartridge urls:

    urlpatterns += [
    
        # cartridge_braintree URLs.
        re_path(r"^shop/(?=checkout(/?)$)", include("cartridge_braintree.urls")),
    
        # Cartridge URLs.
        path("shop/", include("cartridge.shop.urls")),
        path("account/orders/", order_history, name="shop_order_history"),
    
  7. If you want to use PayPal payments with Braintree activate them in the Admin Site Settings and set the currency to use with PayPal.

    Alternatively you can set them in settings.py in the form:

    BRAINTREE_PAYPAL_ACTIVATE = True
    BRAINTREE_PAYPAL_CURRENCY = "EUR"
    

    In this case the settings will not be shown in the Admin.

  8. Optionally add logging to your Django configuration if you want to have more details on transactions:

    LOGGING = {
        'version': 1,
        'disable_existing_loggers': False,
        'handlers': {
            'braintree_file': {
                'class': 'logging.FileHandler',
                'filename': '/path/to/django/braintree.log',
            },
        },
        'loggers': {
            'braintree_payment': {
                'handlers': ['braintree_file'],
                'level': 'DEBUG',
            },
        },
    }
    

    See https://docs.djangoproject.com/en/4.0/topics/logging/#configuring-logging for all configuration options

    Log levels are as follows:
    • Client token creation: info
    • Transaction start: debug
    • Transaction complete: debug
    • Transaction fail: warning

    Confidential information is never output to the logger.

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