README.md edited

.venv/lib/python3.10/site-packages/django/contrib/gis/admin/__init__.py

@@ -0,0 +1,29 @@
+from django.contrib.admin import (
+    HORIZONTAL,
+    VERTICAL,
+    AdminSite,
+    ModelAdmin,
+    StackedInline,
+    TabularInline,
+    action,
+    autodiscover,
+    display,
+    register,
+    site,
+)
+from django.contrib.gis.admin.options import GISModelAdmin
+
+__all__ = [
+    "HORIZONTAL",
+    "VERTICAL",
+    "AdminSite",
+    "ModelAdmin",
+    "StackedInline",
+    "TabularInline",
+    "action",
+    "autodiscover",
+    "display",
+    "register",
+    "site",
+    "GISModelAdmin",
+]

.venv/lib/python3.10/site-packages/django/contrib/gis/admin/options.py

@@ -0,0 +1,21 @@
+from django.contrib.admin import ModelAdmin
+from django.contrib.gis.db import models
+from django.contrib.gis.forms import OSMWidget
+
+
+class GeoModelAdminMixin:
+    gis_widget = OSMWidget
+    gis_widget_kwargs = {}
+
+    def formfield_for_dbfield(self, db_field, request, **kwargs):
+        if isinstance(db_field, models.GeometryField) and (
+            db_field.dim < 3 or self.gis_widget.supports_3d
+        ):
+            kwargs["widget"] = self.gis_widget(**self.gis_widget_kwargs)
+            return db_field.formfield(**kwargs)
+        else:
+            return super().formfield_for_dbfield(db_field, request, **kwargs)
+
+
+class GISModelAdmin(GeoModelAdminMixin, ModelAdmin):
+    pass