diff --git a/app/controllers/categories_controller.rb b/app/controllers/categories_controller.rb
index e565129..007c7f2 100644
--- a/app/controllers/categories_controller.rb
+++ b/app/controllers/categories_controller.rb
@@ -9,21 +9,11 @@ class CategoriesController < ApplicationController
     @page_title = "Portfolio"
 
     @num_blank = 4 - @categories.length
-
-    respond_to do |format|
-      format.html # index.html.erb
-      format.xml  { render xml: @categories }
-    end
   end
 
   # GET /categories/1
   # GET /categories/1.xml
   def show
     @category = Category.find(params[:id])
-
-    respond_to do |format|
-      format.html # show.html.erb
-      format.xml  { render xml: @category }
-    end
   end
 end
diff --git a/app/controllers/contacts_controller.rb b/app/controllers/contacts_controller.rb
index ff7a060..8802b59 100644
--- a/app/controllers/contacts_controller.rb
+++ b/app/controllers/contacts_controller.rb
@@ -6,6 +6,7 @@ class ContactsController < ApplicationController
 
   def create
     @contact = Contact.new(params[:contact])
+
     if @contact.valid?
       Notifier.contact_notification(@contact).deliver
       redirect_to(:new_contact, notice: t("contact.thanks"))
diff --git a/app/controllers/photos_controller.rb b/app/controllers/photos_controller.rb
index 104106f..70f0476 100644
--- a/app/controllers/photos_controller.rb
+++ b/app/controllers/photos_controller.rb
@@ -7,24 +7,25 @@ class PhotosController < ApplicationController
     end
 
     @num_blank = 11 - @photos.length
-
-    respond_to do |format|
-      format.html
-    end
   end
 
   private
 
   def for_category(category_id)
     @category = Category.find_by_id(category_id)
-    @photos = @category.photos.enabled.order(taken_at: :desc)
-              .page(params[:page])
+
+    @photos = @category.photos.enabled
+      .order(taken_at: :desc)
+      .page(params[:page])
+
     @page_title = @category.name
   end
 
   def all
-    @photos = Photo.enabled.order(taken_at: :desc)
-              .page(params[:page])
+    @photos = Photo.enabled
+      .order(taken_at: :desc)
+      .page(params[:page])
+
     @page_title = "All Photos"
   end
 end
diff --git a/app/controllers/sessions_controller.rb b/app/controllers/sessions_controller.rb
index 7f27d79..d02fcc1 100644
--- a/app/controllers/sessions_controller.rb
+++ b/app/controllers/sessions_controller.rb
@@ -18,6 +18,7 @@ class SessionsController < ApplicationController
 
   def destroy
     sign_out
+
     redirect_to root_path
   end
 
diff --git a/app/controllers/views_controller.rb b/app/controllers/views_controller.rb
index 543532d..c2a5651 100644
--- a/app/controllers/views_controller.rb
+++ b/app/controllers/views_controller.rb
@@ -1,6 +1,7 @@
 class ViewsController < ApplicationController
   def create
     photo = Photo.find_by_id(params[:photo_id])
+
     if photo.present?
       photo.log_view
       head :ok
diff --git a/app/models/category.rb b/app/models/category.rb
index b6eaf7a..c79c907 100644
--- a/app/models/category.rb
+++ b/app/models/category.rb
@@ -1,7 +1,8 @@
 class Category < ActiveRecord::Base
   has_and_belongs_to_many :photos
-  validates_presence_of :name, :slug
-  validates_uniqueness_of :name, :slug
+
+  validates :name, presence: true, uniqueness: true
+  validates :slug, presence: true, uniqueness: true
 
   slug :slug, from: :name