feat: Add history tracking

src/fellchensammlung/admin.py

@@ -8,6 +8,7 @@ from django.urls import reverse
 from django.utils.http import urlencode
 
 from admin_extra_buttons.api import ExtraButtonsMixin, button, link
+from simple_history.admin import SimpleHistoryAdmin
 
 from .models import Language, Text, ReportComment, ReportAdoptionNotice, Log, Timestamp, SearchSubscription, \
     SpeciesSpecificURL, ImportantLocation, SocialMediaPost
@@ -50,7 +51,7 @@ class AdoptionNoticeAdmin(admin.ModelAdmin):
 
 # Re-register UserAdmin
 @admin.register(User)
-class UserAdmin(admin.ModelAdmin):
+class UserAdmin(SimpleHistoryAdmin):
     search_fields = ("usernamname__icontains", "first_name__icontains", "last_name__icontains", "email__icontains")
     list_display = ("username", "email", "trust_level", "is_active", "view_adoption_notices")
     list_filter = ("is_active", "trust_level",)
@@ -78,7 +79,7 @@ def _reported_content_link(obj):
 
 
 @admin.register(ReportComment)
-class ReportCommentAdmin(admin.ModelAdmin):
+class ReportCommentAdmin(SimpleHistoryAdmin):
     list_display = ["user_comment", "reported_content_link"]
     date_hierarchy = "created_at"
 
@@ -89,7 +90,7 @@ class ReportCommentAdmin(admin.ModelAdmin):
 
 
 @admin.register(ReportAdoptionNotice)
-class ReportAdoptionNoticeAdmin(admin.ModelAdmin):
+class ReportAdoptionNoticeAdmin(SimpleHistoryAdmin):
     list_display = ["user_comment", "reported_content_link"]
     date_hierarchy = "created_at"
 
@@ -104,7 +105,7 @@ class SpeciesSpecificURLInline(admin.StackedInline):
 
 
 @admin.register(RescueOrganization)
-class RescueOrganizationAdmin(admin.ModelAdmin):
+class RescueOrganizationAdmin(SimpleHistoryAdmin):
     search_fields = ("name", "description", "internal_comment", "location_string", "location__city")
     list_display = ("name", "trusted", "allows_using_materials", "website")
     list_filter = ("allows_using_materials", "trusted", ("external_source_identifier", EmptyFieldListFilter))
@@ -115,12 +116,12 @@ class RescueOrganizationAdmin(admin.ModelAdmin):
 
 
 @admin.register(Text)
-class TextAdmin(admin.ModelAdmin):
+class TextAdmin(SimpleHistoryAdmin):
     search_fields = ("title__icontains", "text_code__icontains",)
 
 
 @admin.register(Comment)
-class CommentAdmin(admin.ModelAdmin):
+class CommentAdmin(SimpleHistoryAdmin):
     list_filter = ("user",)
 
 
@@ -130,7 +131,7 @@ class BaseNotificationAdmin(admin.ModelAdmin):
 
 
 @admin.register(SearchSubscription)
-class SearchSubscriptionAdmin(admin.ModelAdmin):
+class SearchSubscriptionAdmin(SimpleHistoryAdmin):
     list_filter = ("owner",)
 
 
@@ -158,7 +159,7 @@ class IsImportantListFilter(admin.SimpleListFilter):
 
 
 @admin.register(Location)
-class LocationAdmin(admin.ModelAdmin):
+class LocationAdmin(SimpleHistoryAdmin):
     search_fields = ("name__icontains", "city__icontains")
     list_filter = [IsImportantListFilter]
     inlines = [
@@ -167,7 +168,7 @@ class LocationAdmin(admin.ModelAdmin):
 
 
 @admin.register(SocialMediaPost)
-class SocialMediaPostAdmin(admin.ModelAdmin):
+class SocialMediaPostAdmin(SimpleHistoryAdmin):
     list_filter = ("platform",)
 
 
@@ -193,12 +194,13 @@ class LogAdmin(ExtraButtonsMixin, admin.ModelAdmin):
     def invisible(self, button):
         button.visible = False
 
-admin.site.register(Animal)
+
+admin.site.register(Animal, SimpleHistoryAdmin)
 admin.site.register(Species)
-admin.site.register(Rule)
+admin.site.register(Rule, SimpleHistoryAdmin)
 admin.site.register(Image)
-admin.site.register(ModerationAction)
+admin.site.register(ModerationAction, SimpleHistoryAdmin)
 admin.site.register(Language)
-admin.site.register(Announcement)
-admin.site.register(Subscriptions)
+admin.site.register(Announcement, SimpleHistoryAdmin)
+admin.site.register(Subscriptions, SimpleHistoryAdmin)
 admin.site.register(Timestamp)

src/fellchensammlung/migrations/0071_historicaladoptionnotice_historicalanimal_and_more.py

@@ -0,0 +1,367 @@
+# Generated by Django 5.2.8 on 2025-11-16 17:37
+
+import django.contrib.auth.validators
+import django.db.models.deletion
+import django.utils.timezone
+import simple_history.models
+import uuid
+from django.conf import settings
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('fellchensammlung', '0070_user_mod_notes_alter_user_reason_for_signup'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='HistoricalAdoptionNotice',
+            fields=[
+                ('id', models.BigIntegerField(auto_created=True, blank=True, db_index=True, verbose_name='ID')),
+                ('created_at', models.DateField(default=django.utils.timezone.now, verbose_name='Erstellt am')),
+                ('updated_at', models.DateTimeField(blank=True, editable=False)),
+                ('last_checked', models.DateTimeField(default=django.utils.timezone.now, verbose_name='Zuletzt überprüft am')),
+                ('searching_since', models.DateField(verbose_name='Sucht nach einem Zuhause seit')),
+                ('name', models.CharField(max_length=200, verbose_name='Titel der Vermittlung')),
+                ('description', models.TextField(blank=True, null=True, verbose_name='Beschreibung')),
+                ('further_information', models.URLField(blank=True, help_text='Verlinke hier die Quelle der Vermittlung (z.B. die Website des Tierheims)', null=True, verbose_name='Link zu mehr Informationen')),
+                ('group_only', models.BooleanField(default=False, verbose_name='Ausschließlich Gruppenadoption')),
+                ('location_string', models.CharField(max_length=200, verbose_name='Ortsangabe')),
+                ('adoption_notice_status', models.TextField(choices=[('active_searching', 'Searching'), ('active_interested', 'Interested'), ('awaiting_action_waiting_for_review', 'Waiting for review'), ('awaiting_action_needs_additional_info', 'Needs additional info'), ('awaiting_action_unchecked', 'Unchecked'), ('closed_successful_with_notfellchen', 'Successful (with Notfellchen)'), ('closed_successful_without_notfellchen', 'Successful (without Notfellchen)'), ('closed_animal_died', 'Animal died'), ('closed_for_other_adoption_notice', 'Closed for other adoption notice'), ('closed_not_open_for_adoption_anymore', 'Not open for adoption anymore'), ('closed_link_to_more_info_not_reachable', 'Der Link zu weiteren Informationen ist nicht mehr erreichbar.'), ('closed_other', 'Other (closed)'), ('disabled_against_the_rules', 'Against the rules'), ('disabled_other', 'Other (disabled)')], max_length=64, verbose_name='Status')),
+                ('adoption_process', models.TextField(blank=True, choices=[('contact_person_in_an', 'Kontaktiere die Person im Vermittlungstext')], max_length=64, null=True, verbose_name='Adoptionsprozess')),
+                ('history_id', models.AutoField(primary_key=True, serialize=False)),
+                ('history_date', models.DateTimeField(db_index=True)),
+                ('history_change_reason', models.CharField(max_length=100, null=True)),
+                ('history_type', models.CharField(choices=[('+', 'Created'), ('~', 'Changed'), ('-', 'Deleted')], max_length=1)),
+                ('history_user', models.ForeignKey(null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='+', to=settings.AUTH_USER_MODEL)),
+                ('location', models.ForeignKey(blank=True, db_constraint=False, null=True, on_delete=django.db.models.deletion.DO_NOTHING, related_name='+', to='fellchensammlung.location')),
+                ('organization', models.ForeignKey(blank=True, db_constraint=False, null=True, on_delete=django.db.models.deletion.DO_NOTHING, related_name='+', to='fellchensammlung.rescueorganization', verbose_name='Organisation')),
+                ('owner', models.ForeignKey(blank=True, db_constraint=False, null=True, on_delete=django.db.models.deletion.DO_NOTHING, related_name='+', to=settings.AUTH_USER_MODEL, verbose_name='Creator')),
+            ],
+            options={
+                'verbose_name': 'historical Vermittlung',
+                'verbose_name_plural': 'historical Vermittlungen',
+                'ordering': ('-history_date', '-history_id'),
+                'get_latest_by': ('history_date', 'history_id'),
+            },
+            bases=(simple_history.models.HistoricalChanges, models.Model),
+        ),
+        migrations.CreateModel(
+            name='HistoricalAnimal',
+            fields=[
+                ('id', models.BigIntegerField(auto_created=True, blank=True, db_index=True, verbose_name='ID')),
+                ('date_of_birth', models.DateField(verbose_name='Geburtsdatum')),
+                ('name', models.CharField(max_length=200, verbose_name='Name')),
+                ('description', models.TextField(blank=True, null=True, verbose_name='Beschreibung')),
+                ('sex', models.CharField(choices=[('F', 'Weiblich'), ('M', 'Männlich'), ('M_N', 'Männlich, kastriert'), ('F_N', 'Weiblich, kastriert'), ('I', 'Intergeschlechtlich')], max_length=20, verbose_name='Geschlecht')),
+                ('updated_at', models.DateTimeField(blank=True, editable=False)),
+                ('created_at', models.DateTimeField(blank=True, editable=False)),
+                ('history_id', models.AutoField(primary_key=True, serialize=False)),
+                ('history_date', models.DateTimeField(db_index=True)),
+                ('history_change_reason', models.CharField(max_length=100, null=True)),
+                ('history_type', models.CharField(choices=[('+', 'Created'), ('~', 'Changed'), ('-', 'Deleted')], max_length=1)),
+                ('adoption_notice', models.ForeignKey(blank=True, db_constraint=False, null=True, on_delete=django.db.models.deletion.DO_NOTHING, related_name='+', to='fellchensammlung.adoptionnotice')),
+                ('history_user', models.ForeignKey(null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='+', to=settings.AUTH_USER_MODEL)),
+                ('owner', models.ForeignKey(blank=True, db_constraint=False, null=True, on_delete=django.db.models.deletion.DO_NOTHING, related_name='+', to=settings.AUTH_USER_MODEL)),
+                ('species', models.ForeignKey(blank=True, db_constraint=False, null=True, on_delete=django.db.models.deletion.DO_NOTHING, related_name='+', to='fellchensammlung.species', verbose_name='Tierart')),
+            ],
+            options={
+                'verbose_name': 'historical Tier',
+                'verbose_name_plural': 'historical Tiere',
+                'ordering': ('-history_date', '-history_id'),
+                'get_latest_by': ('history_date', 'history_id'),
+            },
+            bases=(simple_history.models.HistoricalChanges, models.Model),
+        ),
+        migrations.CreateModel(
+            name='HistoricalAnnouncement',
+            fields=[
+                ('text_ptr', models.ForeignKey(auto_created=True, blank=True, db_constraint=False, null=True, on_delete=django.db.models.deletion.DO_NOTHING, parent_link=True, related_name='+', to='fellchensammlung.text')),
+                ('id', models.BigIntegerField(auto_created=True, blank=True, db_index=True, verbose_name='ID')),
+                ('title', models.CharField(max_length=100, verbose_name='Titel')),
+                ('content', models.TextField(verbose_name='Inhalt')),
+                ('text_code', models.CharField(blank=True, max_length=24, verbose_name='Text code')),
+                ('logged_in_only', models.BooleanField(default=False)),
+                ('created_at', models.DateTimeField(blank=True, editable=False)),
+                ('updated_at', models.DateTimeField(blank=True, editable=False)),
+                ('publish_start_time', models.DateTimeField(verbose_name='Veröffentlichungszeitpunkt')),
+                ('publish_end_time', models.DateTimeField(verbose_name='Veröffentlichungsende')),
+                ('type', models.CharField(choices=[('important', 'important'), ('warning', 'warning'), ('info', 'info')], default='info', max_length=100)),
+                ('history_id', models.AutoField(primary_key=True, serialize=False)),
+                ('history_date', models.DateTimeField(db_index=True)),
+                ('history_change_reason', models.CharField(max_length=100, null=True)),
+                ('history_type', models.CharField(choices=[('+', 'Created'), ('~', 'Changed'), ('-', 'Deleted')], max_length=1)),
+                ('history_user', models.ForeignKey(null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='+', to=settings.AUTH_USER_MODEL)),
+                ('language', models.ForeignKey(blank=True, db_constraint=False, null=True, on_delete=django.db.models.deletion.DO_NOTHING, related_name='+', to='fellchensammlung.language', verbose_name='Sprache')),
+            ],
+            options={
+                'verbose_name': 'historical Banner',
+                'verbose_name_plural': 'historical Banner',
+                'ordering': ('-history_date', '-history_id'),
+                'get_latest_by': ('history_date', 'history_id'),
+            },
+            bases=(simple_history.models.HistoricalChanges, models.Model),
+        ),
+        migrations.CreateModel(
+            name='HistoricalComment',
+            fields=[
+                ('id', models.BigIntegerField(auto_created=True, blank=True, db_index=True, verbose_name='ID')),
+                ('created_at', models.DateTimeField(blank=True, editable=False)),
+                ('updated_at', models.DateTimeField(blank=True, editable=False)),
+                ('text', models.TextField(verbose_name='Inhalt')),
+                ('history_id', models.AutoField(primary_key=True, serialize=False)),
+                ('history_date', models.DateTimeField(db_index=True)),
+                ('history_change_reason', models.CharField(max_length=100, null=True)),
+                ('history_type', models.CharField(choices=[('+', 'Created'), ('~', 'Changed'), ('-', 'Deleted')], max_length=1)),
+                ('adoption_notice', models.ForeignKey(blank=True, db_constraint=False, null=True, on_delete=django.db.models.deletion.DO_NOTHING, related_name='+', to='fellchensammlung.adoptionnotice', verbose_name='Vermittlung')),
+                ('history_user', models.ForeignKey(null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='+', to=settings.AUTH_USER_MODEL)),
+                ('reply_to', models.ForeignKey(blank=True, db_constraint=False, null=True, on_delete=django.db.models.deletion.DO_NOTHING, related_name='+', to='fellchensammlung.comment', verbose_name='Antwort auf')),
+                ('user', models.ForeignKey(blank=True, db_constraint=False, null=True, on_delete=django.db.models.deletion.DO_NOTHING, related_name='+', to=settings.AUTH_USER_MODEL, verbose_name='Nutzer*in')),
+            ],
+            options={
+                'verbose_name': 'historical Kommentar',
+                'verbose_name_plural': 'historical Kommentare',
+                'ordering': ('-history_date', '-history_id'),
+                'get_latest_by': ('history_date', 'history_id'),
+            },
+            bases=(simple_history.models.HistoricalChanges, models.Model),
+        ),
+        migrations.CreateModel(
+            name='HistoricalModerationAction',
+            fields=[
+                ('id', models.BigIntegerField(auto_created=True, blank=True, db_index=True, verbose_name='ID')),
+                ('action', models.CharField(choices=[('user_banned', 'User was banned'), ('content_deleted', 'Content was deleted'), ('comment', 'Comment was added'), ('other_action_taken', 'Other action was taken'), ('no_action_taken', 'No action was taken')], max_length=30)),
+                ('created_at', models.DateTimeField(blank=True, editable=False)),
+                ('updated_at', models.DateTimeField(blank=True, editable=False)),
+                ('public_comment', models.TextField(blank=True)),
+                ('private_comment', models.TextField(blank=True)),
+                ('history_id', models.AutoField(primary_key=True, serialize=False)),
+                ('history_date', models.DateTimeField(db_index=True)),
+                ('history_change_reason', models.CharField(max_length=100, null=True)),
+                ('history_type', models.CharField(choices=[('+', 'Created'), ('~', 'Changed'), ('-', 'Deleted')], max_length=1)),
+                ('history_user', models.ForeignKey(null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='+', to=settings.AUTH_USER_MODEL)),
+                ('report', models.ForeignKey(blank=True, db_constraint=False, null=True, on_delete=django.db.models.deletion.DO_NOTHING, related_name='+', to='fellchensammlung.report')),
+            ],
+            options={
+                'verbose_name': 'historical Moderationsaktion',
+                'verbose_name_plural': 'historical Moderationsaktionen',
+                'ordering': ('-history_date', '-history_id'),
+                'get_latest_by': ('history_date', 'history_id'),
+            },
+            bases=(simple_history.models.HistoricalChanges, models.Model),
+        ),
+        migrations.CreateModel(
+            name='HistoricalReport',
+            fields=[
+                ('id', models.UUIDField(db_index=True, default=uuid.uuid4, help_text='ID dieses reports', verbose_name='ID')),
+                ('status', models.CharField(choices=[('action taken', 'Action was taken'), ('no action taken', 'No action was taken'), ('waiting', 'Waiting for moderator action')], max_length=30)),
+                ('user_comment', models.TextField(blank=True, verbose_name='Kommentar/Zusätzliche Information')),
+                ('updated_at', models.DateTimeField(blank=True, editable=False, verbose_name='Zuletzt geändert am')),
+                ('created_at', models.DateTimeField(blank=True, editable=False, verbose_name='Erstellt am')),
+                ('history_id', models.AutoField(primary_key=True, serialize=False)),
+                ('history_date', models.DateTimeField(db_index=True)),
+                ('history_change_reason', models.CharField(max_length=100, null=True)),
+                ('history_type', models.CharField(choices=[('+', 'Created'), ('~', 'Changed'), ('-', 'Deleted')], max_length=1)),
+                ('history_user', models.ForeignKey(null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='+', to=settings.AUTH_USER_MODEL)),
+            ],
+            options={
+                'verbose_name': 'historical Meldung',
+                'verbose_name_plural': 'historical Meldungen',
+                'ordering': ('-history_date', '-history_id'),
+                'get_latest_by': ('history_date', 'history_id'),
+            },
+            bases=(simple_history.models.HistoricalChanges, models.Model),
+        ),
+        migrations.CreateModel(
+            name='HistoricalRescueOrganization',
+            fields=[
+                ('id', models.BigIntegerField(auto_created=True, blank=True, db_index=True, verbose_name='ID')),
+                ('name', models.CharField(max_length=200)),
+                ('trusted', models.BooleanField(default=False, verbose_name='Vertrauenswürdig')),
+                ('allows_using_materials', models.CharField(choices=[('allowed', 'Usage allowed'), ('requested', 'Usage requested'), ('denied', 'Usage denied'), ('other', "It's complicated"), ('not_asked', 'Not asked')], default='not_asked', max_length=200, verbose_name='Erlaubt Nutzung von Inhalten')),
+                ('location_string', models.CharField(blank=True, max_length=200, null=True, verbose_name='Ort der Organisation')),
+                ('instagram', models.URLField(blank=True, null=True, verbose_name='Instagram Profil')),
+                ('facebook', models.URLField(blank=True, null=True, verbose_name='Facebook Profil')),
+                ('fediverse_profile', models.URLField(blank=True, null=True, verbose_name='Fediverse Profil')),
+                ('email', models.EmailField(blank=True, max_length=254, null=True, verbose_name='E-Mail')),
+                ('phone_number', models.CharField(blank=True, max_length=15, null=True, verbose_name='Telefonnummer')),
+                ('website', models.URLField(blank=True, null=True, verbose_name='Website')),
+                ('updated_at', models.DateTimeField(blank=True, editable=False)),
+                ('created_at', models.DateTimeField(blank=True, editable=False)),
+                ('last_checked', models.DateTimeField(blank=True, editable=False, verbose_name='Datum der letzten Prüfung')),
+                ('internal_comment', models.TextField(blank=True, null=True, verbose_name='Interner Kommentar')),
+                ('description', models.TextField(blank=True, null=True, verbose_name='Beschreibung')),
+                ('external_object_identifier', models.CharField(blank=True, max_length=200, null=True, verbose_name='External Object Identifier')),
+                ('external_source_identifier', models.CharField(blank=True, choices=[('OSM', 'Open Street Map')], max_length=200, null=True, verbose_name='External Source Identifier')),
+                ('exclude_from_check', models.BooleanField(default=False, help_text='Organisation von der manuellen Überprüfung ausschließen, z.B. weil Tiere nicht online geführt werden', verbose_name='Von Prüfung ausschließen')),
+                ('regular_check_status', models.CharField(choices=[('regular_check', 'Wird regelmäßig geprüft'), ('excluded_no_online_listing', 'Exkludiert: Tiere werden nicht online gelistet'), ('excluded_other_org', 'Exkludiert: Andere Organisation wird geprüft'), ('excluded_scope', 'Exkludiert: Organisation hat nie Notfellchen-relevanten Vermittlungen'), ('excluded_other', 'Exkludiert: Anderer Grund')], default='regular_check', help_text='Organisationen können, durch ändern dieser Einstellung, von der regelmäßigen Prüfung ausgeschlossen werden.', max_length=30, verbose_name='Status der regelmäßigen Prüfung')),
+                ('ongoing_communication', models.BooleanField(default=False, help_text='Es findet gerade Kommunikation zwischen Notfellchen und der Organisation statt.', verbose_name='In aktiver Kommunikation')),
+                ('twenty_id', models.UUIDField(blank=True, help_text='ID der der Organisation in Twenty', null=True, verbose_name='Twenty-ID')),
+                ('history_id', models.AutoField(primary_key=True, serialize=False)),
+                ('history_date', models.DateTimeField(db_index=True)),
+                ('history_change_reason', models.CharField(max_length=100, null=True)),
+                ('history_type', models.CharField(choices=[('+', 'Created'), ('~', 'Changed'), ('-', 'Deleted')], max_length=1)),
+                ('history_user', models.ForeignKey(null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='+', to=settings.AUTH_USER_MODEL)),
+                ('location', models.ForeignKey(blank=True, db_constraint=False, null=True, on_delete=django.db.models.deletion.DO_NOTHING, related_name='+', to='fellchensammlung.location')),
+                ('parent_org', models.ForeignKey(blank=True, db_constraint=False, null=True, on_delete=django.db.models.deletion.DO_NOTHING, related_name='+', to='fellchensammlung.rescueorganization')),
+            ],
+            options={
+                'verbose_name': 'historical Tierschutzorganisation',
+                'verbose_name_plural': 'historical Tierschutzorganisationen',
+                'ordering': ('-history_date', '-history_id'),
+                'get_latest_by': ('history_date', 'history_id'),
+            },
+            bases=(simple_history.models.HistoricalChanges, models.Model),
+        ),
+        migrations.CreateModel(
+            name='HistoricalRule',
+            fields=[
+                ('id', models.BigIntegerField(auto_created=True, blank=True, db_index=True, verbose_name='ID')),
+                ('title', models.CharField(max_length=200)),
+                ('rule_text', models.TextField(verbose_name='Regeltext')),
+                ('rule_identifier', models.CharField(help_text='Ein eindeutiger Identifikator der Regel. Ein Regelobjekt derselben Regel in einer anderen Sprache muss den gleichen Identifikator haben', max_length=24, verbose_name='Regel-ID')),
+                ('updated_at', models.DateTimeField(blank=True, editable=False, verbose_name='Zuletzt geändert am')),
+                ('created_at', models.DateTimeField(blank=True, editable=False, verbose_name='Erstellt am')),
+                ('history_id', models.AutoField(primary_key=True, serialize=False)),
+                ('history_date', models.DateTimeField(db_index=True)),
+                ('history_change_reason', models.CharField(max_length=100, null=True)),
+                ('history_type', models.CharField(choices=[('+', 'Created'), ('~', 'Changed'), ('-', 'Deleted')], max_length=1)),
+                ('history_user', models.ForeignKey(null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='+', to=settings.AUTH_USER_MODEL)),
+                ('language', models.ForeignKey(blank=True, db_constraint=False, null=True, on_delete=django.db.models.deletion.DO_NOTHING, related_name='+', to='fellchensammlung.language', verbose_name='Sprache')),
+            ],
+            options={
+                'verbose_name': 'historical Regel',
+                'verbose_name_plural': 'historical Regeln',
+                'ordering': ('-history_date', '-history_id'),
+                'get_latest_by': ('history_date', 'history_id'),
+            },
+            bases=(simple_history.models.HistoricalChanges, models.Model),
+        ),
+        migrations.CreateModel(
+            name='HistoricalSearchSubscription',
+            fields=[
+                ('id', models.BigIntegerField(auto_created=True, blank=True, db_index=True, verbose_name='ID')),
+                ('sex', models.CharField(choices=[('F', 'Weiblich'), ('M', 'Männlich'), ('M_N', 'Männlich, kastriert'), ('F_N', 'Weiblich Kastriert'), ('I', 'Intergeschlechtlich'), ('A', 'Alle')], max_length=20, verbose_name='Geschlecht')),
+                ('max_distance', models.IntegerField(choices=[(20, '20 km'), (50, '50 km'), (100, '100 km'), (200, '200 km'), (500, '500 km')], null=True)),
+                ('updated_at', models.DateTimeField(blank=True, editable=False, verbose_name='Zuletzt geändert am')),
+                ('created_at', models.DateTimeField(blank=True, editable=False, verbose_name='Erstellt am')),
+                ('history_id', models.AutoField(primary_key=True, serialize=False)),
+                ('history_date', models.DateTimeField(db_index=True)),
+                ('history_change_reason', models.CharField(max_length=100, null=True)),
+                ('history_type', models.CharField(choices=[('+', 'Created'), ('~', 'Changed'), ('-', 'Deleted')], max_length=1)),
+                ('history_user', models.ForeignKey(null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='+', to=settings.AUTH_USER_MODEL)),
+                ('location', models.ForeignKey(blank=True, db_constraint=False, null=True, on_delete=django.db.models.deletion.DO_NOTHING, related_name='+', to='fellchensammlung.location')),
+                ('owner', models.ForeignKey(blank=True, db_constraint=False, null=True, on_delete=django.db.models.deletion.DO_NOTHING, related_name='+', to=settings.AUTH_USER_MODEL)),
+            ],
+            options={
+                'verbose_name': 'historical Abonnierte Suche',
+                'verbose_name_plural': 'historical Abonnierte Suchen',
+                'ordering': ('-history_date', '-history_id'),
+                'get_latest_by': ('history_date', 'history_id'),
+            },
+            bases=(simple_history.models.HistoricalChanges, models.Model),
+        ),
+        migrations.CreateModel(
+            name='HistoricalSocialMediaPost',
+            fields=[
+                ('id', models.BigIntegerField(auto_created=True, blank=True, db_index=True, verbose_name='ID')),
+                ('created_at', models.DateField(default=django.utils.timezone.now, verbose_name='Erstellt am')),
+                ('platform', models.CharField(choices=[('fediverse', 'Fediverse')], max_length=255, verbose_name='Social Media Platform')),
+                ('url', models.URLField(verbose_name='URL')),
+                ('history_id', models.AutoField(primary_key=True, serialize=False)),
+                ('history_date', models.DateTimeField(db_index=True)),
+                ('history_change_reason', models.CharField(max_length=100, null=True)),
+                ('history_type', models.CharField(choices=[('+', 'Created'), ('~', 'Changed'), ('-', 'Deleted')], max_length=1)),
+                ('adoption_notice', models.ForeignKey(blank=True, db_constraint=False, null=True, on_delete=django.db.models.deletion.DO_NOTHING, related_name='+', to='fellchensammlung.adoptionnotice', verbose_name='Vermittlung')),
+                ('history_user', models.ForeignKey(null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='+', to=settings.AUTH_USER_MODEL)),
+            ],
+            options={
+                'verbose_name': 'historical social media post',
+                'verbose_name_plural': 'historical social media posts',
+                'ordering': ('-history_date', '-history_id'),
+                'get_latest_by': ('history_date', 'history_id'),
+            },
+            bases=(simple_history.models.HistoricalChanges, models.Model),
+        ),
+        migrations.CreateModel(
+            name='HistoricalSubscriptions',
+            fields=[
+                ('id', models.BigIntegerField(auto_created=True, blank=True, db_index=True, verbose_name='ID')),
+                ('created_at', models.DateTimeField(blank=True, editable=False)),
+                ('updated_at', models.DateTimeField(blank=True, editable=False)),
+                ('history_id', models.AutoField(primary_key=True, serialize=False)),
+                ('history_date', models.DateTimeField(db_index=True)),
+                ('history_change_reason', models.CharField(max_length=100, null=True)),
+                ('history_type', models.CharField(choices=[('+', 'Created'), ('~', 'Changed'), ('-', 'Deleted')], max_length=1)),
+                ('adoption_notice', models.ForeignKey(blank=True, db_constraint=False, help_text='Vermittlung die abonniert wurde', null=True, on_delete=django.db.models.deletion.DO_NOTHING, related_name='+', to='fellchensammlung.adoptionnotice', verbose_name='Vermittlung')),
+                ('history_user', models.ForeignKey(null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='+', to=settings.AUTH_USER_MODEL)),
+                ('owner', models.ForeignKey(blank=True, db_constraint=False, null=True, on_delete=django.db.models.deletion.DO_NOTHING, related_name='+', to=settings.AUTH_USER_MODEL, verbose_name='Nutzer*in')),
+            ],
+            options={
+                'verbose_name': 'historical Abonnement',
+                'verbose_name_plural': 'historical Abonnements',
+                'ordering': ('-history_date', '-history_id'),
+                'get_latest_by': ('history_date', 'history_id'),
+            },
+            bases=(simple_history.models.HistoricalChanges, models.Model),
+        ),
+        migrations.CreateModel(
+            name='HistoricalText',
+            fields=[
+                ('id', models.BigIntegerField(auto_created=True, blank=True, db_index=True, verbose_name='ID')),
+                ('title', models.CharField(max_length=100, verbose_name='Titel')),
+                ('content', models.TextField(verbose_name='Inhalt')),
+                ('text_code', models.CharField(blank=True, max_length=24, verbose_name='Text code')),
+                ('history_id', models.AutoField(primary_key=True, serialize=False)),
+                ('history_date', models.DateTimeField(db_index=True)),
+                ('history_change_reason', models.CharField(max_length=100, null=True)),
+                ('history_type', models.CharField(choices=[('+', 'Created'), ('~', 'Changed'), ('-', 'Deleted')], max_length=1)),
+                ('history_user', models.ForeignKey(null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='+', to=settings.AUTH_USER_MODEL)),
+                ('language', models.ForeignKey(blank=True, db_constraint=False, null=True, on_delete=django.db.models.deletion.DO_NOTHING, related_name='+', to='fellchensammlung.language', verbose_name='Sprache')),
+            ],
+            options={
+                'verbose_name': 'historical Text',
+                'verbose_name_plural': 'historical Texte',
+                'ordering': ('-history_date', '-history_id'),
+                'get_latest_by': ('history_date', 'history_id'),
+            },
+            bases=(simple_history.models.HistoricalChanges, models.Model),
+        ),
+        migrations.CreateModel(
+            name='HistoricalUser',
+            fields=[
+                ('id', models.BigIntegerField(auto_created=True, blank=True, db_index=True, verbose_name='ID')),
+                ('password', models.CharField(max_length=128, verbose_name='password')),
+                ('last_login', models.DateTimeField(blank=True, null=True, verbose_name='last login')),
+                ('is_superuser', models.BooleanField(default=False, help_text='Designates that this user has all permissions without explicitly assigning them.', verbose_name='superuser status')),
+                ('username', models.CharField(db_index=True, error_messages={'unique': 'A user with that username already exists.'}, help_text='Required. 150 characters or fewer. Letters, digits and @/./+/-/_ only.', max_length=150, validators=[django.contrib.auth.validators.UnicodeUsernameValidator()], verbose_name='username')),
+                ('first_name', models.CharField(blank=True, max_length=150, verbose_name='first name')),
+                ('last_name', models.CharField(blank=True, max_length=150, verbose_name='last name')),
+                ('email', models.EmailField(blank=True, max_length=254, verbose_name='email address')),
+                ('is_staff', models.BooleanField(default=False, help_text='Designates whether the user can log into this admin site.', verbose_name='staff status')),
+                ('is_active', models.BooleanField(default=True, help_text='Designates whether this user should be treated as active. Unselect this instead of deleting accounts.', verbose_name='active')),
+                ('date_joined', models.DateTimeField(default=django.utils.timezone.now, verbose_name='date joined')),
+                ('trust_level', models.IntegerField(choices=[(1, 'Member'), (2, 'Coordinator'), (3, 'Moderator'), (4, 'Admin')], default=1)),
+                ('updated_at', models.DateTimeField(blank=True, editable=False)),
+                ('reason_for_signup', models.TextField(help_text="Wir würden gerne wissen warum du dich registrierst, ob du dich z.B. Tiere eines bestimmten Tierheim einstellen willst 'nur mal gucken' willst. Beides ist toll! Wenn du für ein Tierheim/eine Pflegestelle arbeitest kontaktieren wir dich ggf. um dir erweiterte Rechte zu geben.", verbose_name='Grund für die Registrierung')),
+                ('mod_notes', models.TextField(blank=True, null=True, verbose_name='Moderationsnotizen')),
+                ('email_notifications', models.BooleanField(default=True, verbose_name='Benachrichtigung per E-Mail')),
+                ('history_id', models.AutoField(primary_key=True, serialize=False)),
+                ('history_date', models.DateTimeField(db_index=True)),
+                ('history_change_reason', models.CharField(max_length=100, null=True)),
+                ('history_type', models.CharField(choices=[('+', 'Created'), ('~', 'Changed'), ('-', 'Deleted')], max_length=1)),
+                ('history_user', models.ForeignKey(null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='+', to=settings.AUTH_USER_MODEL)),
+                ('organization_affiliation', models.ForeignKey(blank=True, db_constraint=False, null=True, on_delete=django.db.models.deletion.DO_NOTHING, related_name='+', to='fellchensammlung.rescueorganization', verbose_name='Organisation')),
+                ('preferred_language', models.ForeignKey(blank=True, db_constraint=False, null=True, on_delete=django.db.models.deletion.DO_NOTHING, related_name='+', to='fellchensammlung.language', verbose_name='Bevorzugte Sprache')),
+            ],
+            options={
+                'verbose_name': 'historical Nutzer*in',
+                'verbose_name_plural': 'historical Nutzer*innen',
+                'ordering': ('-history_date', '-history_id'),
+                'get_latest_by': ('history_date', 'history_id'),
+            },
+            bases=(simple_history.models.HistoricalChanges, models.Model),
+        ),
+    ]

src/fellchensammlung/models.py

@@ -7,6 +7,7 @@ from django.contrib.auth.models import Group
 from django.contrib.auth.models import AbstractUser
 from django.core.exceptions import ValidationError
 import base64
+from simple_history.models import HistoricalRecords
 
 from .tools import misc, geo
 from notfellchen.settings import MEDIA_URL, base_url
@@ -187,6 +188,7 @@ class RescueOrganization(models.Model):
     specializations = models.ManyToManyField(Species, blank=True)
     twenty_id = models.UUIDField(verbose_name=_("Twenty-ID"), null=True, blank=True,
                                  help_text=_("ID der der Organisation in Twenty"))
+    history = HistoricalRecords()
 
     class Meta:
         unique_together = ('external_object_identifier', 'external_source_identifier',)
@@ -250,6 +252,7 @@ class RescueOrganization(models.Model):
 
     def set_checked(self):
         self.last_checked = timezone.now()
+        self._change_reason = 'Organization checked'
         self.save()
 
     @property
@@ -311,6 +314,7 @@ class User(AbstractUser):
     reason_for_signup = models.TextField(verbose_name=reason_for_signup_label, help_text=reason_for_signup_help_text)
     mod_notes = models.TextField(verbose_name=_("Moderationsnotizen"), null=True, blank=True)
     email_notifications = models.BooleanField(verbose_name=_("Benachrichtigung per E-Mail"), default=True)
+    history = HistoricalRecords()
     REQUIRED_FIELDS = ["reason_for_signup", "email"]
 
     class Meta:
@@ -406,6 +410,7 @@ class AdoptionNotice(models.Model):
     adoption_process = models.TextField(null=True, blank=True,
                                         max_length=64, verbose_name=_('Adoptionsprozess'),
                                         choices=AdoptionProcess)
+    history = HistoricalRecords()
 
     @property
     def animals(self):
@@ -641,6 +646,7 @@ class Animal(models.Model):
     owner = models.ForeignKey(User, on_delete=models.CASCADE)
     updated_at = models.DateTimeField(auto_now=True)
     created_at = models.DateTimeField(auto_now_add=True)
+    history = HistoricalRecords()
 
     def __str__(self):
         return f"{self.name}"
@@ -704,6 +710,7 @@ class SearchSubscription(models.Model):
     max_distance = models.IntegerField(choices=DistanceChoices.choices, null=True)
     updated_at = models.DateTimeField(auto_now=True, verbose_name=_("Zuletzt geändert am"))
     created_at = models.DateTimeField(auto_now_add=True, verbose_name=_("Erstellt am"))
+    history = HistoricalRecords()
 
     def __str__(self):
         if self.location and self.max_distance:
@@ -734,6 +741,7 @@ class Rule(models.Model):
                                                    "Identifikator haben"))
     updated_at = models.DateTimeField(auto_now=True, verbose_name=_("Zuletzt geändert am"))
     created_at = models.DateTimeField(auto_now_add=True, verbose_name=_("Erstellt am"))
+    history = HistoricalRecords()
 
     def __str__(self):
         return self.title
@@ -759,6 +767,7 @@ class Report(models.Model):
     user_comment = models.TextField(blank=True, verbose_name=_("Kommentar/Zusätzliche Information"))
     updated_at = models.DateTimeField(auto_now=True, verbose_name=_("Zuletzt geändert am"))
     created_at = models.DateTimeField(auto_now_add=True, verbose_name=_("Erstellt am"))
+    history = HistoricalRecords()
 
     def __str__(self):
         return f"[{self.status}]: {self.user_comment:.20}"
@@ -845,6 +854,7 @@ class ModerationAction(models.Model):
     # Only visible to moderator
     private_comment = models.TextField(blank=True)
     report = models.ForeignKey(Report, on_delete=models.CASCADE)
+    history = HistoricalRecords()
 
     def __str__(self):
         return f"[{self.action}]: {self.public_comment}"
@@ -866,6 +876,7 @@ class Text(models.Model):
     content = models.TextField(verbose_name="Inhalt")
     language = models.ForeignKey(Language, verbose_name="Sprache", on_delete=models.PROTECT)
     text_code = models.CharField(max_length=24, verbose_name="Text code", blank=True)
+    history = HistoricalRecords()
 
     class Meta:
         verbose_name = "Text"
@@ -909,6 +920,7 @@ class Announcement(Text):
         INFO: "info",
     }
     type = models.CharField(choices=TYPES, max_length=100, default=INFO)
+    history = HistoricalRecords()
 
     @property
     def is_active(self):
@@ -955,6 +967,7 @@ class Comment(models.Model):
     adoption_notice = models.ForeignKey(AdoptionNotice, on_delete=models.CASCADE, verbose_name=_('Vermittlung'))
     text = models.TextField(verbose_name="Inhalt")
     reply_to = models.ForeignKey("self", verbose_name="Antwort auf", blank=True, null=True, on_delete=models.CASCADE)
+    history = HistoricalRecords()
 
     def __str__(self):
         return f"{self.user} at {self.created_at.strftime('%H:%M %d.%m.%y')}: {self.text:.10}"
@@ -1026,6 +1039,7 @@ class Subscriptions(models.Model):
                                         help_text=_("Vermittlung die abonniert wurde"))
     created_at = models.DateTimeField(auto_now_add=True)
     updated_at = models.DateTimeField(auto_now=True)
+    history = HistoricalRecords()
 
     def __str__(self):
         return f"{self.owner} - {self.adoption_notice}"
@@ -1087,6 +1101,7 @@ class SocialMediaPost(models.Model):
                                 choices=PlatformChoices.choices)
     adoption_notice = models.ForeignKey(AdoptionNotice, on_delete=models.CASCADE, verbose_name=_('Vermittlung'))
     url = models.URLField(verbose_name=_("URL"))
+    history = HistoricalRecords()
 
     @staticmethod
     def get_an_to_post():

src/notfellchen/settings.py

@@ -237,6 +237,7 @@ INSTALLED_APPS = [
     'widget_tweaks',
     "debug_toolbar",
     'admin_extra_buttons',
+    'simple_history',
 ]
 
 MIDDLEWARE = [
@@ -254,6 +255,7 @@ MIDDLEWARE = [
     'django.middleware.clickjacking.XFrameOptionsMiddleware',
     # allauth middleware, needs to be after message middleware
     "allauth.account.middleware.AccountMiddleware",
+    'simple_history.middleware.HistoryRequestMiddleware',
 ]
 
 ROOT_URLCONF = 'notfellchen.urls'