Complete Lesson 25

app/controllers/movies_controller.rb

@@ -1,42 +1,42 @@
 class MoviesController < ApplicationController
-    def index
-      @movies = Movie.released
-    end
-    def show
-      @movie = Movie.find(params[:id])
-    end
-    def edit
-      @movie = Movie.find(params[:id])
-    end
-    def update
-      @movie = Movie.find(params[:id])
-      if @movie.update(movie_params)
-        redirect_to @movie, notice: "Movie successfully updated!"
-      else
-        render :edit, status: :unprocessable_entity
-      end
-    end
-    def new
-      @movie = Movie.new
-    end
-    def create
-      @movie = Movie.new(movie_params)
-      if @movie.save
-        redirect_to @movie, notice: "Movie successfully created!"
-      else
-        render :new, status: :unprocessable_entity
-      end
-    end
-    def destroy
-      @movie = Movie.find(params[:id])
-      if @movie.destroy
-        redirect_to movies_url, status: :see_other, alert: "Movie successfully destroyed!"
-      end
-    end
+  def index
+    @movies = Movie.released
+  end
+  def show
+    @movie = Movie.find(params[:id])
+  end
+  def edit
+    @movie = Movie.find(params[:id])
+  end
+  def update
+    @movie = Movie.find(params[:id])
+    if @movie.update(movie_params)
+      redirect_to @movie, notice: "Movie successfully updated!"
+    else
+      render :edit, status: :unprocessable_entity
+    end
+  end
+  def new
+    @movie = Movie.new
+  end
+  def create
+    @movie = Movie.new(movie_params)
+    if @movie.save
+      redirect_to @movie, notice: "Movie successfully created!"
+    else
+      render :new, status: :unprocessable_entity
+    end
+  end
+  def destroy
+    @movie = Movie.find(params[:id])
+    if @movie.destroy
+      redirect_to movies_url, status: :see_other, alert: "Movie successfully destroyed!"
+    end
+  end
 
-    private
+  private
 
-    def movie_params
-      params.require(:movie).permit(:title, :description, :rating, :released_on, :total_gross, :director, :duration, :image_file_name)
-    end
+  def movie_params
+    params.require(:movie).permit(:title, :description, :rating, :released_on, :total_gross, :director, :duration, :image_file_name)
+  end
 end

app/helpers/reviews_helper.rb

@@ -1,2 +1,9 @@
 module ReviewsHelper
+  def average_stars(movie)
+    if movie.average_stars.zero?
+      content_tag(:strong, "No reviews")
+    else
+      pluralize(number_with_precision(movie.average_stars, precision: 1) , "star")
+    end
+  end
 end

app/models/movie.rb

@@ -17,4 +17,7 @@ class Movie < ApplicationRecord
   def self.released
     where("released_on < ?", Time.now).order(released_on: :desc)
   end
+  def average_stars
+    reviews.average(:stars) || 0.0
+  end
 end

app/views/movies/index.html.erb

@@ -12,6 +12,9 @@
         <h3>
           <%= total_gross(movie) %>
         </h3>
+        <span class="stars">
+          <%= average_stars(movie) %>
+        </span>
         <p>
           <%= truncate(movie.description, length: 150, separator: ' ') %>
         </p>

app/views/movies/show.html.erb

@@ -8,6 +8,7 @@
       <%= year_of(@movie) %> &bull; <%= @movie.rating %>
     </h2>
     <div class="reviews">
+      <%= average_stars(@movie) %>
       <%= link_to pluralize(@movie.reviews.size, "review"), movie_reviews_path(@movie) %>
     </div>
     <p>