Progress

app/controllers/admin/joined_groups_controller.rb

@@ -0,0 +1,18 @@
+# frozen_string_literal: true
+
+module Admin
+  class JoinedGroupsController < BaseController
+    before_action :set_account
+
+    PER_PAGE = 25
+
+    def index
+      authorize :account, :index?
+      @groups = @account.groups.page(params[:page]).per(PER_PAGE)
+    end
+
+    def set_account
+      @account = Account.find(params[:account_id])
+    end
+  end
+end