Price model

config/settings.py

@@ -38,6 +38,7 @@
     "open_prices.products",
     "open_prices.locations",
     "open_prices.proofs",
+    "open_prices.prices",
     "open_prices.www",
 ]
 

open_prices/prices/constants.py

@@ -0,0 +1,9 @@
+"""For raw products (fruits, vegetables, etc.), the price is either
+per unit or per kilogram. This enum is used to store this information.
+"""
+
+PRICE_PER_UNIT = "UNIT"
+PRICE_PER_KILOGRAM = "KILOGRAM"
+
+PRICE_PER_LIST = [PRICE_PER_UNIT, PRICE_PER_KILOGRAM]
+PRICE_PER_CHOICES = [(key, key) for key in PRICE_PER_LIST]

open_prices/prices/models.py

@@ -0,0 +1,73 @@
+from django.db import models
+from django.utils import timezone
+
+from open_prices.common import constants
+from open_prices.locations import constants as location_constants
+from open_prices.prices import constants as price_constants
+
+
+class Price(models.Model):
+    product_code = models.CharField(blank=True, null=True)
+    category_tag = models.CharField(blank=True, null=True)
+    labels_tags = models.JSONField(blank=True, null=True)
+    product_name = models.CharField(blank=True, null=True)
+    origins_tags = models.JSONField(blank=True, null=True)
+    product = models.ForeignKey(
+        "products.Product",
+        on_delete=models.SET_NULL,
+        blank=True,
+        null=True,
+        related_name="prices",
+    )
+
+    price = models.DecimalField(max_digits=10, decimal_places=2, blank=True, null=True)
+    price_is_discounted = models.BooleanField()
+    price_without_discount = models.DecimalField(
+        max_digits=10, decimal_places=2, blank=True, null=True
+    )
+    price_per = models.CharField(
+        max_length=10,
+        constants=price_constants.PRICE_PER_CHOICES,
+        blank=True,
+        null=True,
+    )
+    currency = models.CharField(
+        max_length=3, choices=constants.CURRENCY_CHOICES, blank=True, null=True
+    )
+
+    location_osm_id = models.BigIntegerField(blank=True, null=True)
+    location_osm_type = models.CharField(
+        max_length=10,
+        choices=location_constants.OSM_TYPE_CHOICES,
+        blank=True,
+        null=True,
+    )
+    location = models.ForeignKey(
+        "locations.Location",
+        on_delete=models.SET_NULL,
+        blank=True,
+        null=True,
+        related_name="prices",
+    )
+
+    date = models.DateField(blank=True, null=True)
+
+    proof = models.ForeignKey(
+        "proofs.Proof",
+        on_delete=models.SET_NULL,
+        blank=True,
+        null=True,
+        related_name="prices",
+    )
+
+    owner = models.CharField(blank=True, null=True)
+    source = models.CharField(blank=True, null=True)
+
+    created = models.DateTimeField(default=timezone.now)
+    updated = models.DateTimeField(auto_now=True)
+
+    class Meta:
+        managed = False
+        db_table = "prices"
+        verbose_name = "Price"
+        verbose_name_plural = "Prices"