ePayco Django

A Django integration for ePayco's gateway. ##Requirements

• Python (3.5, 3.6, 3.7, 3.8)
• Django
• epayco-python

Warning

This library intends to use a fork of the epayco-python as the current version published py its owner doesn't work on pip, and you would have to fix it manually. The only changes are a couple of lines on the MANIFEST.in to make the setup.py properly include all relevant directories within the repo.

You can check the fork here.

Run this after you install the library.

pip install git+https://github.com/gustav0/epayco-python.git --no-cache-dir -U

Or append it to your requirements.txt at the end of the file.

git+https://github.com/gustav0/epayco-python.git

This will be a temporary workaround until they fix the problem.

Installation

If you want clone the repository:

git clone https://github.com/gustav0/epayco_django.git

Install from package manager

pip install epayco-django

Add 'epayco_django' to your INSTALLED_APPS setting.

INSTALLED_APPS = [
    ...
    'epayco_django',
    ...
]

And set this in your settings, you can get this data from your ePayco dashboard under Integration > API keys.

EPAYCO = {
    'PUBLIC_KEY': 'MY_PUBLIC_KEY',
    'PRIVATE_KEY': 'MY_PRIVATE_KEY',
    'P_KEY': 'MY_P_KEY',
    'TEST': True, # you probably want to test it first rigth?
    
    # Optional (ignore these if you want the default behaviour)
    'FORCE_HTTPS': False, # If you use https on your website you may want to enable this.
    'RESPONSE_URL': reverse('epayco_response'),
    'CONFIRMATION_URL': reverse('epayco_confirmation'),
    
    # Instead of reversing a project url you could just use any url instead:
    'CONFIRMATION_URL': 'https://yourdomain.com/epayco/confirmation', 
    
    # And you can use your own image as a payment button
    'CHECKOUT_BUTTON_URL': 'https://mydomain.com/btns/pay_now_button.png'
}

Now edit the myproject/urls.py module in your project:

from django.conf.urls import url, include
# Or Django 2.0 +
from django.urls import path, include

from epayco_django import urls as epayco_urls


urlpatterns = [
    ...
    url('^', include(epayco_urls)),
    
    # or Django 2.0 +
    
    path('', include(epayco_urls)),
    ...
]

Finally run the migrations:

python manage.py migrate epayco_django

Usage

At the moment the usage of the library is very limited, but it can be helpful to receive and act upon payment confirmations.

If this is what you need then you should set the confirmation url under Integrations > My site properties > Gateway options in the ePayco dashboard to:

https://yourdomain.com/epayco/confirmation

It is important to use https, and if you are working locally you can use tools like ngrok.

Template tags

We have a templatetag to generate a payment button that is quick and easy to implement. It also is very customisable, you can assign any variable that's available on the epayco checkout page.

Here is an example of how to use it.

{% load epayco_checkout %}

<div class="my-button">
{% render_checkout amount=9999 name="Test payment" currency="COP" extra1=request.user.id extra2="membership-3" request=request %}
</div>

And that's it, you have a fully working payment button. This tag uses the image you set in the settings CHECKOUT_BUTTON_URL.

You can check the complete list of options for this template tag here.

Default payment responses

We have a template that is shown by the default payment response validation view at https://example.com/payment/response-validation.

You can override this and whatever you feel like. Just create a new template at: templates/simple_payment_response.html

Payment Confirmation

Now that you set payment confirmations to be reported to your site, we can listen to whatever confirmation is sent, validate it and act on it. Listen to any of the epayco_django.signals you are interested in and you should be able to acomplish what you need. Here is an example:

from django.dispatch import receiver
from epayco_django.signals import valid_confirmation_received

@receiver(valid_confirmation_received)
def activate_membership(sender, confirmation=None, **kwargs):
    ...
    HERE SHOULD BE YOUR MEMBERSHIP ACTIVATION CODE
    ...

Validating responses

We provide a utility that will search for existing payments with the provided reference code, if it finds a payment it will retrieve its information but if it doesn't it will fetch the payment data and activate the payment confirmation process by itself.

...

from epayco_django.utils import validate_response_code

class MyView(TemplateView):
    ...
    
    def get_context_data(self, request, *args, **kwargs):
        context = super().get_context_data(request, *args, **kwargs)
        ref_code = request.GET.get('ref_code')
        result = validate_response_code(ref_code)
        # You will get a dict like this as a result
        # {'valid_ref': True, 'existed': True, 'flag': False, 'obj': <PaymentConfirmationObject>}

        # INSERT CUSTOM CODE HERE

        return context

Contributing

I'm always grateful for any kind of contribution including but not limited to bug reports, code enhancements, bug fixes, and even functionality suggestions.

You can report any bug you find or suggest new functionality with a new issue.

If you want to add yourself some functionality to the wrapper:

1. Fork it ( https://github.com/gustav0/epayco_django)
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Adds my new feature')
4. Push to the branch (git push origin my-new-feature)
5. Create a new Pull Request