refactor models

src/c3nav/mapdata/models/level.py

@@ -0,0 +1,16 @@
+from django.db import models
+from django.utils.translation import ugettext_lazy as _
+
+
+class Level(models.Model):
+    """
+    A map level (-1, 0, 1, 2…)
+    """
+    name = models.CharField(_('level name'), max_length=50, unique=True,
+                            help_text=_('Usually just an integer (e.g. -1, 0, 1, 2)'))
+    altitude = models.DecimalField(_('level altitude'), null=True, max_digits=6, decimal_places=2)
+    package = models.ForeignKey('Package', on_delete=models.CASCADE, related_name='levels',
+                                verbose_name=_('map package'))
+
+    class Meta:
+        ordering = ['altitude']