diff --git a/app/models/movie.rb b/app/models/movie.rb
index 1f8f0e5..36ce580 100644
--- a/app/models/movie.rb
+++ b/app/models/movie.rb
@@ -1,4 +1,14 @@
 class Movie < ApplicationRecord
+  validates :title, :released_on, :duration, presence: true
+  validates :description, length: { minimum: 25 }
+  validates :total_gross, numericality: { greater_than_or_equal_to: 0 }
+  validates :image_file_name, format: {
+    with: /\w+\.(jpg|png)\z/i,
+    message: "must be a JPG or PNG image"
+  }
+  RATINGS = %w(G PG PG-13 R X NC-17)
+  validates :rating, inclusion: { in: RATINGS }
+
   def flop?
     total_gross.blank? || total_gross < 225_000_000
   end
diff --git a/app/views/movies/_form.html.erb b/app/views/movies/_form.html.erb
index 0d50b62..0a510ff 100644
--- a/app/views/movies/_form.html.erb
+++ b/app/views/movies/_form.html.erb
@@ -6,7 +6,7 @@
   <%= f.text_area :description, rows: 10 %>
 
   <%= f.label :rating %>
-  <%= f.text_field :rating %>
+  <%= f.select :rating, Movie::RATINGS, prompt: "Pick one" %>
 
   <%= f.label :released_on %>
   <%= f.date_field :released_on %>