HiPhone_BE/graph/models.py

from django.db import models

from market.models import Product


class Transaction(models.Model):
    product = models.ForeignKey(
        Product, on_delete=models.CASCADE, related_name="transactions"
    )
    price = models.IntegerField()
    created_at = models.DateTimeField(auto_now_add=True)

    class Meta:
        ordering = ["-created_at"]

    def __str__(self):
        return f"{self.product} : {self.price}"


class MonthlyTransaction(models.Model):
    product = models.ForeignKey(
        Product, on_delete=models.CASCADE, related_name="monthly_transactions"
    )
    year = models.IntegerField()
    month = models.IntegerField()
    price = models.IntegerField()

    class Meta:
        ordering = ["-year", "-month"]

    def __str__(self):
        return f"{self.product} : {self.year}-{self.month}"