feat: Make date of birt optional, fixes #30

src/fellchensammlung/forms.py

@@ -5,9 +5,8 @@ from .models import AdoptionNotice, Animal, Image, ReportAdoptionNotice, ReportC
     Comment, SexChoicesWithAll, DistanceChoices, SpeciesSpecificURL, RescueOrganization
 from django_registration.forms import RegistrationForm
 from crispy_forms.helper import FormHelper
-from crispy_forms.layout import Submit, Layout, Fieldset, HTML, Row, Column, Field, Hidden
+from crispy_forms.layout import Submit, Layout, Fieldset
 from django.utils.translation import gettext_lazy as _
-from notfellchen.settings import MEDIA_URL
 from crispy_forms.layout import Div
 
 from .tools.model_helpers import reason_for_signup_label, reason_for_signup_help_text, AdoptionNoticeStatusChoices

src/fellchensammlung/migrations/0074_alter_animal_date_of_birth_and_more.py

@@ -0,0 +1,104 @@
+# Generated by Django 5.2.8 on 2026-01-20 21:09
+
+import django.db.models.deletion
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("fellchensammlung", "0073_adoption_notice_status_successful"),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name="animal",
+            name="date_of_birth",
+            field=models.DateField(blank=True, null=True, verbose_name="Geburtsdatum"),
+        ),
+        migrations.AlterField(
+            model_name="historicalanimal",
+            name="date_of_birth",
+            field=models.DateField(blank=True, null=True, verbose_name="Geburtsdatum"),
+        ),
+        migrations.AlterField(
+            model_name="historicalrescueorganization",
+            name="external_object_identifier",
+            field=models.CharField(
+                blank=True,
+                help_text="Id des Objekts in der externen Datenbank (kann leer gelassen werden)",
+                max_length=200,
+                null=True,
+                verbose_name="External Object Identifier",
+            ),
+        ),
+        migrations.AlterField(
+            model_name="historicalrescueorganization",
+            name="external_source_identifier",
+            field=models.CharField(
+                blank=True,
+                choices=[("OSM", "Open Street Map")],
+                help_text="Name der Datenbank aus der die Tierschutzorganisation importiert wurde (kann leer gelassen werden)",
+                max_length=200,
+                null=True,
+                verbose_name="External Source Identifier",
+            ),
+        ),
+        migrations.AlterField(
+            model_name="historicalrescueorganization",
+            name="parent_org",
+            field=models.ForeignKey(
+                blank=True,
+                db_constraint=False,
+                null=True,
+                on_delete=django.db.models.deletion.DO_NOTHING,
+                related_name="+",
+                to="fellchensammlung.rescueorganization",
+                verbose_name="Übergeordnete Organisation",
+            ),
+        ),
+        migrations.AlterField(
+            model_name="rescueorganization",
+            name="external_object_identifier",
+            field=models.CharField(
+                blank=True,
+                help_text="Id des Objekts in der externen Datenbank (kann leer gelassen werden)",
+                max_length=200,
+                null=True,
+                verbose_name="External Object Identifier",
+            ),
+        ),
+        migrations.AlterField(
+            model_name="rescueorganization",
+            name="external_source_identifier",
+            field=models.CharField(
+                blank=True,
+                choices=[("OSM", "Open Street Map")],
+                help_text="Name der Datenbank aus der die Tierschutzorganisation importiert wurde (kann leer gelassen werden)",
+                max_length=200,
+                null=True,
+                verbose_name="External Source Identifier",
+            ),
+        ),
+        migrations.AlterField(
+            model_name="rescueorganization",
+            name="parent_org",
+            field=models.ForeignKey(
+                blank=True,
+                null=True,
+                on_delete=django.db.models.deletion.PROTECT,
+                to="fellchensammlung.rescueorganization",
+                verbose_name="Übergeordnete Organisation",
+            ),
+        ),
+        migrations.AlterField(
+            model_name="speciesspecificurl",
+            name="rescue_organization",
+            field=models.ForeignKey(
+                on_delete=django.db.models.deletion.CASCADE,
+                related_name="species_specific_urls",
+                to="fellchensammlung.rescueorganization",
+                verbose_name="Tierschutzorganisation",
+            ),
+        ),
+    ]

src/fellchensammlung/models.py

@@ -168,11 +168,13 @@ class RescueOrganization(models.Model):
     description = models.TextField(null=True, blank=True, verbose_name=_('Beschreibung'))  # Markdown allowed
     external_object_identifier = models.CharField(max_length=200, null=True, blank=True,
                                                   verbose_name=_('External Object Identifier'),
-                                                  help_text=_("Id des Objekts in der externen Datenbank (kann leer gelassen werden)"))
+                                                  help_text=_(
+                                                      "Id des Objekts in der externen Datenbank (kann leer gelassen werden)"))
     external_source_identifier = models.CharField(max_length=200, null=True, blank=True,
                                                   choices=ExternalSourceChoices.choices,
                                                   verbose_name=_('External Source Identifier'),
-                                                  help_text=_("Name der Datenbank aus der die Tierschutzorganisation importiert wurde (kann leer gelassen werden)"))
+                                                  help_text=_(
+                                                      "Name der Datenbank aus der die Tierschutzorganisation importiert wurde (kann leer gelassen werden)"))
     exclude_from_check = models.BooleanField(default=False, verbose_name=_('Von Prüfung ausschließen'),
                                              help_text=_("Organisation von der manuellen Überprüfung ausschließen, "
                                                          "z.B. weil Tiere nicht online geführt werden"))
@@ -185,7 +187,8 @@ class RescueOrganization(models.Model):
     ongoing_communication = models.BooleanField(default=False, verbose_name=_('In aktiver Kommunikation'),
                                                 help_text=_(
                                                     "Es findet gerade Kommunikation zwischen Notfellchen und der Organisation statt."))
-    parent_org = models.ForeignKey("RescueOrganization", on_delete=models.PROTECT, blank=True, null=True, verbose_name=_("Übergeordnete Organisation"))
+    parent_org = models.ForeignKey("RescueOrganization", on_delete=models.PROTECT, blank=True, null=True,
+                                   verbose_name=_("Übergeordnete Organisation"))
     # allows to specify if a rescue organization has a specialization for dedicated species
     specializations = models.ManyToManyField(Species, blank=True)
     twenty_id = models.UUIDField(verbose_name=_("Twenty-ID"), null=True, blank=True,
@@ -634,7 +637,7 @@ class Animal(models.Model):
         verbose_name = _('Tier')
         verbose_name_plural = _('Tiere')
 
-    date_of_birth = models.DateField(verbose_name=_('Geburtsdatum'))
+    date_of_birth = models.DateField(verbose_name=_('Geburtsdatum'), null=True, blank=True)
     name = models.CharField(max_length=200, verbose_name=_('Name'))
     description = models.TextField(null=True, blank=True, verbose_name=_('Beschreibung'))
     species = models.ForeignKey(Species, on_delete=models.PROTECT, verbose_name=_("Tierart"))
@@ -655,12 +658,18 @@ class Animal(models.Model):
 
     @property
     def age(self):
-        return timezone.now().today().date() - self.date_of_birth
+        if self.date_of_birth:
+            return timezone.now().today().date() - self.date_of_birth
+        else:
+            return None
 
     @property
     def hr_age(self):
         """Returns a human-readable age based on the date of birth."""
-        return misc.age_as_hr_string(self.age)
+        if self.date_of_birth:
+            return misc.age_as_hr_string(self.age)
+        else:
+            return _("Unbekannt")
 
     def get_photo(self):
         """