施肥散布実績機能を実装し運搬・作業記録・在庫連携を追加

backend/apps/materials/models.py

@@ -205,6 +205,14 @@ class StockTransaction(models.Model):
         related_name='stock_reservations',
         verbose_name='施肥計画',
     )
+    spreading_item = models.ForeignKey(
+        'fertilizer.SpreadingSessionItem',
+        on_delete=models.CASCADE,
+        null=True,
+        blank=True,
+        related_name='stock_transactions',
+        verbose_name='散布実績明細',
+    )
     created_at = models.DateTimeField(auto_now_add=True)
 
     class Meta: