first commit

core/apps/shared/admin/__init__.py

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+from .settings import * # noqa

core/apps/shared/admin/settings.py

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+from django.contrib import admin
+from unfold.admin import ModelAdmin, StackedInline
+from core.apps.shared.models import SettingsModel, OptionsModel
+from unfold.contrib.forms.widgets import ArrayWidget
+from django.contrib.postgres.fields import ArrayField
+
+
+class OptionsInline(StackedInline):
+    model = OptionsModel
+    extra = 1
+    formfield_overrides = {
+        ArrayField: {"widget": ArrayWidget},
+    }
+
+
+@admin.register(SettingsModel)
+class SettingsAdmin(ModelAdmin):
+    list_display = ["id", "key"]
+    inlines = [OptionsInline]
+