feat: support partial-width rack devices

netbox_utilities/models.py

@@ -46,3 +46,36 @@ class UtilitiesSettings(models.Model):
 
     def __str__(self):
         return "NetBox Utilities settings"
+
+
+class DeviceRackPlacement(models.Model):
+    WIDTH_CHOICES = (
+        (2, "1/2 Rackbreite"),
+        (3, "1/3 Rackbreite"),
+        (4, "1/4 Rackbreite"),
+    )
+
+    device = models.OneToOneField(
+        "dcim.Device",
+        on_delete=models.CASCADE,
+        related_name="netbox_utilities_rack_placement",
+    )
+    width = models.PositiveSmallIntegerField(choices=WIDTH_CHOICES)
+    horizontal_position = models.PositiveSmallIntegerField(
+        validators=[MinValueValidator(1), MaxValueValidator(4)],
+        help_text="Position von links innerhalb der Rackbreite.",
+    )
+    updated = models.DateTimeField(auto_now=True)
+
+    class Meta:
+        constraints = (
+            models.CheckConstraint(
+                condition=models.Q(width__gte=models.F("horizontal_position")),
+                name="netbox_utilities_placement_position_within_width",
+            ),
+        )
+        verbose_name = "Gerätebreite im Rack"
+        verbose_name_plural = "Gerätebreiten im Rack"
+
+    def __str__(self):
+        return f"{self.device}: 1/{self.width}, Position {self.horizontal_position}"