refactor admin into several files

hub/services/admin/content.py

@@ -0,0 +1,35 @@
+"""
+Admin classes for content-related models like external links and plans
+"""
+
+from django.contrib import admin
+
+from ..models import ExternalLink, ExternalLinkOffering, Plan
+
+
+class PlanInline(admin.StackedInline):
+    """Inline admin for Plan model"""
+
+    model = Plan
+    extra = 1
+    fieldsets = (
+        (None, {"fields": ("name", "description", "pricing", "plan_description")}),
+    )
+
+
+class ExternalLinkOfferingInline(admin.TabularInline):
+    """Inline admin for ExternalLinkOffering model"""
+
+    model = ExternalLinkOffering
+    extra = 1
+    fields = ("description", "url", "order")
+    ordering = ("order", "description")
+
+
+class ExternalLinkInline(admin.TabularInline):
+    """Inline admin for ExternalLink model"""
+
+    model = ExternalLink
+    extra = 1
+    fields = ("description", "url", "order")
+    ordering = ("order", "description")