Implement Callouts controller

app/controllers/callouts_controller.rb

+class CalloutsController < ApplicationController
+  before_action :callout, only: [:dismiss]
+
+  def dismiss
+    respond_to do |format|
+      format.json do
+        if @callout
+          @callout.update(dismissed_state: true)
+        else
+          Callout.create(feature_name: callout_param, dismissed_state: true, user: current_user)
+        end
+
+        head :ok
+      end
+    end
+  end
+
+  private
+
+  def callout
+    @callout = Callout.find_by(user: current_user, feature_name: callout_param)
+  end
+
+  def callout_param
+    params.require(:feature_name)
+  end
+end

config/routes.rb

@@ -105,6 +105,11 @@ Rails.application.routes.draw do
   # Notification settings
   resources :notification_settings, only: [:create, :update]
 
+  # Callouts
+  namespace :callouts do
+    post :dismiss
+  end
+
   draw :google_api
   draw :import
   draw :uploads