first commit

core/apps/management/models/income.py

@@ -0,0 +1,10 @@
+from django.db import models
+from .device import Device
+
+class Income(models.Model):
+    device = models.ForeignKey(Device, related_name='incomes',on_delete=models.PROTECT)
+    amount = models.DecimalField(max_digits=12, decimal_places=2, null=True, blank=True)
+    created_by = models.ForeignKey("accounts.User", on_delete=models.PROTECT, related_name="created_incomes")
+
+    is_confirmed = models.BooleanField(default=False)
+    created_at = models.DateTimeField(auto_now_add=True)