Url amigavel com gem friendly_id

Gemfile

@@ -43,4 +43,5 @@ gem "rails_admin"
 gem "bootstrap-sass", "~> 3.3.3"
 
 gem "faker"
-gem "meta-tags"
+gem "meta-tags"
+gem 'friendly_id', '~> 5.1.0'

Gemfile.lock

@@ -52,6 +52,8 @@ GEM
       i18n (~> 0.5)
     font-awesome-rails (4.2.0.0)
       railties (>= 3.2, < 5.0)
+    friendly_id (5.1.0)
+      activerecord (>= 4.0.0)
     haml (4.0.6)
       tilt
     hike (1.2.3)
@@ -167,6 +169,7 @@ DEPENDENCIES
   bootstrap-sass (~> 3.3.3)
   coffee-rails (~> 4.0.0)
   faker
+  friendly_id (~> 5.1.0)
   jbuilder (~> 2.0)
   jquery-rails
   meta-tags

app/controllers/events_controller.rb

@@ -29,6 +29,6 @@ def show
 
   private
     def set_event
-      @event = Event.find(params[:id])
+      @event = Event.friendly.find(params[:id])
     end
 end

app/controllers/news_controller.rb

@@ -30,6 +30,6 @@ def show
 
   private
     def set_news
-      @news = News.find(params[:id])
+      @news = News.friendly.find(params[:id])
     end
 end

app/models/category.rb

@@ -1,4 +1,7 @@
 class Category < ActiveRecord::Base
   has_many :events
   has_many :news
+
+  extend FriendlyId
+  friendly_id :name, use: :slugged
 end

app/models/event.rb

@@ -3,4 +3,20 @@ class Event < ActiveRecord::Base
 
   has_attached_file :image, :styles => { :medium => "300x300>", :thumb => "100x100>" }, :default_url => "/images/:style/missing.png"
   validates_attachment_content_type :image, :content_type => /\Aimage\/.*\Z/
-end
+
+  extend FriendlyId
+  friendly_id :my_method_slug, use: :slugged
+
+  def my_method_slug
+    start_date.strftime("%m/%d/%Y")+" - #{title}"
+  end
+
+  rails_admin do 
+    create do
+      exclude_fields :slug
+    end
+    edit do
+      exclude_fields :slug
+    end
+  end
+end

app/models/news.rb

@@ -3,4 +3,16 @@ class News < ActiveRecord::Base
 
   has_attached_file :image, :styles => { :medium => "300x300>", :thumb => "100x100>" }, :default_url => "/images/:style/missing.png"
   validates_attachment_content_type :image, :content_type => /\Aimage\/.*\Z/
+
+  extend FriendlyId
+  friendly_id :title, use: :slugged
+
+  rails_admin do 
+    create do
+      exclude_fields :slug
+    end
+    edit do
+      exclude_fields :slug
+    end
+  end
 end

config/initializers/friendly_id.rb

@@ -0,0 +1,88 @@
+# FriendlyId Global Configuration
+#
+# Use this to set up shared configuration options for your entire application.
+# Any of the configuration options shown here can also be applied to single
+# models by passing arguments to the `friendly_id` class method or defining
+# methods in your model.
+#
+# To learn more, check out the guide:
+#
+# http://norman.github.io/friendly_id/file.Guide.html
+
+FriendlyId.defaults do |config|
+  # ## Reserved Words
+  #
+  # Some words could conflict with Rails's routes when used as slugs, or are
+  # undesirable to allow as slugs. Edit this list as needed for your app.
+  config.use :reserved
+
+  config.reserved_words = %w(new edit index session login logout users admin
+    stylesheets assets javascripts images)
+
+  #  ## Friendly Finders
+  #
+  # Uncomment this to use friendly finders in all models. By default, if
+  # you wish to find a record by its friendly id, you must do:
+  #
+  #    MyModel.friendly.find('foo')
+  #
+  # If you uncomment this, you can do:
+  #
+  #    MyModel.find('foo')
+  #
+  # This is significantly more convenient but may not be appropriate for
+  # all applications, so you must explicity opt-in to this behavior. You can
+  # always also configure it on a per-model basis if you prefer.
+  #
+  # Something else to consider is that using the :finders addon boosts
+  # performance because it will avoid Rails-internal code that makes runtime
+  # calls to `Module.extend`.
+  #
+  # config.use :finders
+  #
+  # ## Slugs
+  #
+  # Most applications will use the :slugged module everywhere. If you wish
+  # to do so, uncomment the following line.
+  #
+  # config.use :slugged
+  #
+  # By default, FriendlyId's :slugged addon expects the slug column to be named
+  # 'slug', but you can change it if you wish.
+  #
+  # config.slug_column = 'slug'
+  #
+  # When FriendlyId can not generate a unique ID from your base method, it appends
+  # a UUID, separated by a single dash. You can configure the character used as the
+  # separator. If you're upgrading from FriendlyId 4, you may wish to replace this
+  # with two dashes.
+  #
+  # config.sequence_separator = '-'
+  #
+  #  ## Tips and Tricks
+  #
+  #  ### Controlling when slugs are generated
+  #
+  # As of FriendlyId 5.0, new slugs are generated only when the slug field is
+  # nil, but if you're using a column as your base method can change this
+  # behavior by overriding the `should_generate_new_friendly_id` method that
+  # FriendlyId adds to your model. The change below makes FriendlyId 5.0 behave
+  # more like 4.0.
+  #
+  # config.use Module.new {
+  #   def should_generate_new_friendly_id?
+  #     slug.blank? || <your_column_name_here>_changed?
+  #   end
+  # }
+  #
+  # FriendlyId uses Rails's `parameterize` method to generate slugs, but for
+  # languages that don't use the Roman alphabet, that's not usually sufficient.
+  # Here we use the Babosa library to transliterate Russian Cyrillic slugs to
+  # ASCII. If you use this, don't forget to add "babosa" to your Gemfile.
+  #
+  # config.use Module.new {
+  #   def normalize_friendly_id(text)
+  #     text.to_slug.normalize! :transliterations => [:russian, :latin]
+  #   end
+  # }
+end

config/routes.rb

@@ -1,11 +1,11 @@
 Rails.application.routes.draw do
   root 'pages#home'
 
-  get 'events' => 'events#index', as: :events
-  get 'events/:id' => 'events#show', as: :event
+  get 'eventos' => 'events#index', as: :events
+  get 'eventos/:id' => 'events#show', as: :event
 
-  get 'news' => 'news#index', as: :news_index
-  get 'news/:id' => 'news#show', as: :news
+  get 'noticias' => 'news#index', as: :news_index
+  get 'noticias/:id' => 'news#show', as: :news
 
   mount RailsAdmin::Engine => '/admin', as: 'rails_admin'
 end

db/migrate/20150306235422_create_friendly_id_slugs.rb

@@ -0,0 +1,15 @@
+class CreateFriendlyIdSlugs < ActiveRecord::Migration
+  def change
+    create_table :friendly_id_slugs do |t|
+      t.string   :slug,           :null => false
+      t.integer  :sluggable_id,   :null => false
+      t.string   :sluggable_type, :limit => 50
+      t.string   :scope
+      t.datetime :created_at
+    end
+    add_index :friendly_id_slugs, :sluggable_id
+    add_index :friendly_id_slugs, [:slug, :sluggable_type]
+    add_index :friendly_id_slugs, [:slug, :sluggable_type, :scope], :unique => true
+    add_index :friendly_id_slugs, :sluggable_type
+  end
+end

db/migrate/20150306235728_add_slug_to_news.rb

@@ -0,0 +1,6 @@
+class AddSlugToNews < ActiveRecord::Migration
+  def change
+    add_column :news, :slug, :string
+    add_index :news, :slug, unique: true
+  end
+end

db/migrate/20150306235746_add_slug_to_events.rb

@@ -0,0 +1,6 @@
+class AddSlugToEvents < ActiveRecord::Migration
+  def change
+    add_column :events, :slug, :string
+    add_index :events, :slug, unique: true
+  end
+end

db/migrate/20150306235926_add_slug_to_categories.rb

@@ -0,0 +1,6 @@
+class AddSlugToCategories < ActiveRecord::Migration
+  def change
+    add_column :categories, :slug, :string
+    add_index :categories, :slug, unique: true
+  end
+end

db/schema.rb

@@ -11,14 +11,17 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20150222204612) do
+ActiveRecord::Schema.define(version: 20150306235926) do
 
   create_table "categories", force: true do |t|
     t.string   "name"
     t.datetime "created_at"
     t.datetime "updated_at"
+    t.string   "slug"
   end
 
+  add_index "categories", ["slug"], name: "index_categories_on_slug", unique: true
+
   create_table "events", force: true do |t|
     t.string   "title"
     t.integer  "category_id"
@@ -32,9 +35,24 @@
     t.string   "place"
     t.datetime "created_at"
     t.datetime "updated_at"
+    t.string   "slug"
   end
 
   add_index "events", ["category_id"], name: "index_events_on_category_id"
+  add_index "events", ["slug"], name: "index_events_on_slug", unique: true
+
+  create_table "friendly_id_slugs", force: true do |t|
+    t.string   "slug",                      null: false
+    t.integer  "sluggable_id",              null: false
+    t.string   "sluggable_type", limit: 50
+    t.string   "scope"
+    t.datetime "created_at"
+  end
+
+  add_index "friendly_id_slugs", ["slug", "sluggable_type", "scope"], name: "index_friendly_id_slugs_on_slug_and_sluggable_type_and_scope", unique: true
+  add_index "friendly_id_slugs", ["slug", "sluggable_type"], name: "index_friendly_id_slugs_on_slug_and_sluggable_type"
+  add_index "friendly_id_slugs", ["sluggable_id"], name: "index_friendly_id_slugs_on_sluggable_id"
+  add_index "friendly_id_slugs", ["sluggable_type"], name: "index_friendly_id_slugs_on_sluggable_type"
 
   create_table "news", force: true do |t|
     t.string   "title"
@@ -46,8 +64,10 @@
     t.datetime "image_updated_at"
     t.datetime "created_at"
     t.datetime "updated_at"
+    t.string   "slug"
   end
 
   add_index "news", ["category_id"], name: "index_news_on_category_id"
+  add_index "news", ["slug"], name: "index_news_on_slug", unique: true
 
 end