Generating a report in CSV format and sending it to a email

Resulto of report

How to start project.

  • Create a folder in your machine
  • Create a virtual environment
    • python3 -m venv venv
  • Start the virtual environment
    • . venv/bin/activate (Linux)
    • venv/Scripts/Activate (Windows)
  • Inside your venv folder clone the project
    • git clone https://github.com/alexlopesbr/forgot-password.git
  • In your-new-folder/venv/forgot-password
    • pip install -r requirements.txt to install the project’s dependencies
    • python manage.py migrate to generate your database
    • python3 manage.py createsuperuser to create the admin
    • python3 manage.py runserver to start the server
  • Open your browser and go to http://127.0.0.1:8000/admin/
  • Login with the admin credentials
    • Now you can see you user and some info in admin panel

Using the functionality

POST {{localhost}}/core/log-generator

body of the request:

{
    "product_id": 1,
    "seller_id": 4,
    "date_from": "2021-01-14",
    "date_to": "2021-01-14"
}

header: Must be passed the key Authorization and the value Token

You can pass the following parameters to filter your results, note that all parameters are optional and in this case you will get all the logs:

If you pass only date_from, you will get the logs from that date.

If you pass both date_from and date_to, you will get the logs between those dates.

You can use Postman or Insomnia to test the requests.
Note: When you start your server the localhost generaly is http://127.0.0.1:8000/.

Some instructions and informations

root

setings.py

BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))

BASE_URL = 'sandbox.com'

EMAIL_BACKEND = 'django.core.mail.backends.smtp.EmailBackend'
EMAIL_HOST = 'smtp.gmail.com'
EMAIL_HOST_USER = '[email protected]'
EMAIL_HOST_PASSWORD = 'your-key'
EMAIL_PORT = 587
EMAIL_USE_TLS = True

First step, set some configures in settings.py. Don’t forget to set the EMAIL_HOST_USER and the EMAIL_HOST_PASSWORD.

core

models.py

class ProductSold(models.Model):
    product = models.ForeignKey(Product, on_delete=models.CASCADE)
    seller = models.ForeignKey(Seller, on_delete=models.CASCADE)
    client = models.ForeignKey(Client, on_delete=models.CASCADE)
    created_at = models.DateTimeField(auto_now_add=True)
    updated_at = models.DateTimeField(auto_now=True)

    def __str__(self):
        return '{} - {} - {}'.format(self.product.name, self.seller.user.email, self.client.user.email)

This model will be the base of the CSV file

views.py

@csrf_exempt
@api_view(['POST'])
@permission_classes([IsAdminUser])
def log_generator_view(request):
    return Response(log_generator(request))

This function view will generate the CSV file with the data from the request, look his ulr bellow.

urls.py

router = DefaultRouter()
router.register(r'user', UserViewSet)
router.register(r'client', ClientViewSet)
router.register(r'seller', SellerViewSet)
router.register(r'product', ProductViewSet)
router.register(r'product-sold', ProductSoldViewSet)

urlpatterns = [
    path('auth/', CustomAuthToken.as_view()),
    path('', include(router.urls)),
    url(r'^log-generator/?$', log_generator_view),

]

Just pay attention to the url of the log-generator, it will be used to generate the CSV file.

services.py

<div class="highlight highlight-source-python position-relative overflow-auto" data-snippet-clipboard-copy-content="from django.core.mail import EmailMessage
from django.conf import settings

import io
import csv

from .models import ProductSold

def log_generator(request):
email = request.user.email
data = request.data

product_id = data.get('product_id', None)
seller = data.get('seller', None)
date_from = data.get('date_from', None)
date_to = data.get('date_to', None)

producs_sold = ProductSold.objects.all()

if product_id:
producs_sold = producs_sold.filter(product__id=product_id)

if seller:
producs_sold = producs_sold.filter(seller__id=seller)

if date_from:
producs_sold = producs_sold.filter(created_at__exact=date_from)

if date_from and date_to:
producs_sold = producs_sold.filter(created_at__range=[date_from, date_to])

create_log_report(producs_sold, email)

def create_log_report(producs_sold, email):
filename = 'report.csv'

data = io.StringIO()
spamwriter = csv.writer(data)
spamwriter.writerow(('Product', 'Price', 'Seller', 'Client', 'date', 'time'))

for product_sold in producs_sold:
Product = product_sold.product.name
Price = product_sold.product.price
Seller = product_sold.seller.user.name
Client = product_sold.client.user.name
date = product_sold.created_at.strftime(" %y %m %d") time="product_sold.created_at.strftime("%H:%M:%S")" spamwriter.writerow((product, price, seller, client, date, time)) if email: send_email_report(email, data.getvalue(), filename) def report, file): msg="EmailMessage(" u'logs', '
Products sold:

‘, to=[email, ], from_email=settings.EMAIL_HOST_USER, attachments=[(file, report)] ) msg.content_subtype = ‘html’ msg.send() “>

from django.core.mail import EmailMessage
from django.conf import settings

import io
import csv

from .models import ProductSold

def log_generator(request):
    email = request.user.email
    data = request.data

    product_id = data.get('product_id', None)
    seller = data.get('seller', None)
    date_from = data.get('date_from', None)
    date_to = data.get('date_to', None)

    producs_sold = ProductSold.objects.all()

    if product_id:
        producs_sold = producs_sold.filter(product__id=product_id)

    if seller:
        producs_sold = producs_sold.filter(seller__id=seller)

    if date_from:
        producs_sold = producs_sold.filter(created_at__exact=date_from)

    if date_from and date_to:
        producs_sold = producs_sold.filter(created_at__range=[date_from, date_to])

    create_log_report(producs_sold, email)


def create_log_report(producs_sold, email):
    filename = 'report.csv'

    data = io.StringIO()
    spamwriter = csv.writer(data)
    spamwriter.writerow(('Product', 'Price', 'Seller', 'Client', 'date', 'time'))

    for product_sold in producs_sold:
        Product = product_sold.product.name
        Price = product_sold.product.price
        Seller = product_sold.seller.user.name
        Client = product_sold.client.user.name
        date = product_sold.created_at.strftime("%Y/%m/%d")
        time = product_sold.created_at.strftime("%H:%M:%S")

        spamwriter.writerow((Product, Price, Seller, Client, date, time))

    if email:
        send_email_report(email, data.getvalue(), filename)


def send_email_report(email, report, file):
    msg = EmailMessage(
        u'Logs',
        '
Products sold: 
',
        to=[email, ],
        from_email=settings.EMAIL_HOST_USER,
        attachments=[(file, report)]
    )
    msg.content_subtype = 'html'
    msg.send()