diff --git a/app/controllers/application_controller.rb b/app/controllers/application_controller.rb
index 94e7183f..6a19e3d0 100644
--- a/app/controllers/application_controller.rb
+++ b/app/controllers/application_controller.rb
@@ -2,4 +2,8 @@ class ApplicationController < ActionController::Base
include Authentication
# Only allow modern browsers supporting webp images, web push, badges, import maps, CSS nesting, and CSS :has.
allow_browser versions: :modern
+
+ def check_admin!
+ redirect_to root_path unless Current.user.is_admin?
+ end
end
diff --git a/app/controllers/topics_controller.rb b/app/controllers/topics_controller.rb
new file mode 100644
index 00000000..ac1331b1
--- /dev/null
+++ b/app/controllers/topics_controller.rb
@@ -0,0 +1,61 @@
+class TopicsController < ApplicationController
+ before_action :set_topic, only: [ :show, :edit, :update, :destroy, :archive ]
+ before_action :check_admin!, only: :destroy
+
+ def index
+ @topics = scope.includes(:language, :provider)
+ end
+
+ def new
+ @topic = scope.new
+ end
+
+ def create
+ @topic = scope.new(topic_params)
+
+ if @topic.save
+ redirect_to topics_path
+ else
+ render :new
+ end
+ end
+
+ def show
+ end
+
+ def edit
+ end
+
+ def update
+ @topic.update(topic_params)
+ redirect_to topics_path
+ end
+
+ def destroy
+ @topic.destroy
+ redirect_to topics_path
+ end
+
+ def archive
+ @topic.archived!
+ redirect_to topics_path
+ end
+
+ private
+
+ def topic_params
+ params.require(:topic).permit(:title, :description, :uid, :language_id, :provider_id)
+ end
+
+ def set_topic
+ @topic = Topic.find(params[:id])
+ end
+
+ def scope
+ @scope ||= if Current.user.is_admin?
+ Topic.all
+ else
+ Topic.active
+ end
+ end
+end
diff --git a/app/models/topic.rb b/app/models/topic.rb
new file mode 100644
index 00000000..e96609ca
--- /dev/null
+++ b/app/models/topic.rb
@@ -0,0 +1,12 @@
+class Topic < ApplicationRecord
+ belongs_to :language
+ belongs_to :provider
+
+ validates :title, :language_id, :provider_id, presence: true
+
+ STATES = %i[active archived].freeze
+
+ enum :state, STATES.map.with_index.to_h
+
+ scope :active, -> { where(state: :active) }
+end
diff --git a/app/views/layouts/_sidebar.html.erb b/app/views/layouts/_sidebar.html.erb
index 89ac0ea1..3341c084 100644
--- a/app/views/layouts/_sidebar.html.erb
+++ b/app/views/layouts/_sidebar.html.erb
@@ -59,10 +59,10 @@