Initial commit from monorepo

purchase_requests/models.py

@@ -0,0 +1,21 @@
+from django.db import models
+import uuid
+
+
+class Request(models.Model):
+    """Заявка покупателя (RFQ - Request For Quotation)"""
+    uuid = models.CharField(max_length=100, unique=True, default=uuid.uuid4)
+    product_uuid = models.CharField(max_length=100)
+    quantity = models.DecimalField(max_digits=10, decimal_places=2)
+    source_location_uuid = models.CharField(max_length=100)
+    user_id = models.CharField(max_length=255)
+
+    created_at = models.DateTimeField(auto_now_add=True)
+    updated_at = models.DateTimeField(auto_now=True)
+
+    class Meta:
+        db_table = 'calculations'  # Keep old table name for data compatibility
+        ordering = ['-created_at']
+
+    def __str__(self):
+        return f"Заявка {self.uuid} - {self.quantity}"