Refactoring

* splits compensation/models.py into subpackage
* renames base objects by adding suffix Mixin

compensation/models/action.py

@@ -0,0 +1,66 @@
+"""
+Author: Michel Peltriaux
+Organization: Struktur- und Genehmigungsdirektion Nord, Rhineland-Palatinate, Germany
+Contact: michel.peltriaux@sgdnord.rlp.de
+Created on: 16.11.21
+
+"""
+from django.db import models
+from django.utils.translation import gettext_lazy as _
+
+from codelist.models import KonovaCode
+from codelist.settings import CODELIST_COMPENSATION_ACTION_ID
+from compensation.managers import CompensationActionManager
+from konova.models import BaseResource
+
+
+class UnitChoices(models.TextChoices):
+    """
+    Predefines units for selection
+    """
+    cm = "cm", _("cm")
+    m = "m", _("m")
+    km = "km", _("km")
+    qm = "qm", _("m²")
+    ha = "ha", _("ha")
+    st = "pcs", _("Pieces")  # pieces
+
+
+class CompensationAction(BaseResource):
+    """
+    Compensations include actions like planting trees, refreshing rivers and so on.
+    """
+    action_type = models.ForeignKey(
+        KonovaCode,
+        on_delete=models.SET_NULL,
+        null=True,
+        blank=True,
+        limit_choices_to={
+            "code_lists__in": [CODELIST_COMPENSATION_ACTION_ID],
+            "is_selectable": True,
+            "is_archived": False,
+        }
+    )
+    amount = models.FloatField()
+    unit = models.CharField(max_length=100, null=True, blank=True, choices=UnitChoices.choices)
+    comment = models.TextField(blank=True, null=True, help_text="Additional comment")
+
+    objects = CompensationActionManager()
+
+    def __str__(self):
+        return "{} | {} {}".format(self.action_type, self.amount, self.unit)
+
+    @property
+    def unit_humanize(self):
+        """ Returns humanized version of enum
+
+        Used for template rendering
+
+        Returns:
+
+        """
+        choices = UnitChoices.choices
+        for choice in choices:
+            if choice[0] == self.unit:
+                return choice[1]
+        return None