Added logic to display analytics on course

app/controllers/courses_controller.rb

@@ -1,6 +1,6 @@
 class CoursesController < ApplicationController
   skip_before_action :authenticate_user!, only: [ :show ]
-  before_action :set_course, only: %i[ show edit update destroy approve unapprove ]
+  before_action :set_course, only: %i[ show edit update destroy approve unapprove analytics ]
 
   # GET /courses or /courses.json
   def index
@@ -118,6 +118,9 @@ def unapproved
     render "index"
   end
 
+  def analytics
+    authorize @course, :owner?
+  end
 
   def destroy
     authorize @course

app/views/courses/_course.html.haml

@@ -52,10 +52,14 @@
     - if policy(course).edit?
       .card-footer
         - if policy(course).owner?
-          = link_to "Add lesson", new_course_lesson_path(course, @lesson), class: "btn btn-sm btn-primary" 
+          = link_to "Add lesson", new_course_lesson_path(course, @lesson), class: 'btn btn-sm btn-primary'
         = link_to 'Edit', edit_course_path(course), class: 'btn btn-sm btn-warning'
         -# - if current_user && policy(course).destroy?
         = link_to 'Destroy', course, data: { turbo_method: :delete, confirm: 'Are you sure?' }, class: 'btn btn-sm btn-danger'
+        = link_to analytics_course_path(course), class: 'btn btn-sm btn-info' do
+          .fa.fa-chart-bar
+          Analytics
+
     - if policy(course).destroy?
       .card-footer
         - if course.published?

app/views/courses/analytics.html.haml

@@ -0,0 +1,30 @@
+-content_for :title do
+  E-learning
+  \|
+  = @course.title
+  Analytics
+
+= link_to 'Courses', courses_path
+\/ 
+= link_to course_path(@course) do
+  .fa.fa-graduation-cap
+  = @course.title
+\/ 
+= link_to analytics_course_path(@course) do
+  .fa.fa-chart-bar
+  Analytics
+
+%h4.text-center
+  Analytics for #{@course.title}
+
+Enrollments per day, quantity
+= line_chart @course.enrollments.group_by_day(:created_at).count
+
+Enrollments per day, revenue
+= line_chart @course.enrollments.group_by_day(:created_at).sum(:price)
+
+Unique user views(how many unique users viewed the lesson)
+= bar_chart @course.user_lessons.joins(:lesson).group(:'lessons.title').count
+
+Impressions per lesson (how many times the lesson was opened)
+= bar_chart @course.user_lessons.joins(:lesson).group(:'lessons.title').sum(:impression)

config/routes.rb

@@ -13,6 +13,7 @@
   resources :courses do
     get :purchased, :pending_review, :created, :unapproved, on: :collection
     member do
+      get :analytics
       patch :approve
       patch :unapprove
     end