fixed lessons

app/controllers/admin/lessons_controller.rb

@@ -29,6 +29,7 @@ module Admin
       @lesson = Lesson.new(admin_lesson_params)
       @week = @lesson.week
       @lesson.course = @week.course
+      @course = @week.course
       params[:week_id] = @week.id
       respond_to do |format|
         if @lesson.save
@@ -89,6 +90,7 @@ module Admin
     def set_object
       @lesson = Lesson.find(params[:id])
       @week = @lesson.week
+      @course = @week.course
       params[:week_id] = @week.id
     end
 

app/controllers/admin/weeks_controller.rb

@@ -13,7 +13,9 @@ module Admin
 
     # GET /admin/weeks/1
     # GET /admin/weeks/1.json
-    def show; end
+    def show
+      @lessons = @week.lessons.page(params[:page])
+    end
 
     # GET /admin/weeks/new
     def new

app/models/week.rb

@@ -10,6 +10,7 @@ class Week < ApplicationRecord
 
   # == Relationships ========================================================
   belongs_to :course
+  has_many :lessons
 
   # == Validations ==========================================================
   validates :name, presence: true