From 423cd86abc14ceded7f1b9d480c6bd1fcf671036 Mon Sep 17 00:00:00 2001
From: jg93pt <jorgebenf@gmail.com>
Date: Wed, 18 May 2022 15:18:50 +0100
Subject: [PATCH 1/7] created db users, sessions, attributes, models
 validations, post routes, controllers create functions

---
 app/controllers/sessions_controller.rb        | 19 +++++++++++++++++-
 app/controllers/users_controller.rb           | 20 +++++++++++++++++++
 app/models/session.rb                         |  7 +++++++
 app/models/user.rb                            |  8 ++++++++
 config/routes.rb                              |  4 ++--
 db/migrate/20220518131947_create_users.rb     |  8 ++++++++
 .../20220518132107_add_attributes_to_users.rb |  8 ++++++++
 db/migrate/20220518135038_create_sessions.rb  |  8 ++++++++
 ...220518135219_add_attributes_to_sessions.rb |  6 ++++++
 .../20220518135320_add_user_id_to_sessions.rb |  5 +++++
 db/schema.rb                                  | 20 ++++++++++++++++++-
 11 files changed, 109 insertions(+), 4 deletions(-)
 create mode 100644 db/migrate/20220518131947_create_users.rb
 create mode 100644 db/migrate/20220518132107_add_attributes_to_users.rb
 create mode 100644 db/migrate/20220518135038_create_sessions.rb
 create mode 100644 db/migrate/20220518135219_add_attributes_to_sessions.rb
 create mode 100644 db/migrate/20220518135320_add_user_id_to_sessions.rb

diff --git a/app/controllers/sessions_controller.rb b/app/controllers/sessions_controller.rb
index b0435f5a..7ee2dab8 100644
--- a/app/controllers/sessions_controller.rb
+++ b/app/controllers/sessions_controller.rb
@@ -1,3 +1,20 @@
 class SessionsController < ApplicationController
-
+  def create
+    @user = User.find_by(username: params[:user][:username])
+    if @user and @user.password == params[:user][:password]
+      session = @user.sessions.create
+      cookies.permanent.signed[:twitter_session_token] = {
+        value: session.token,
+        httponly: true
+      }
+      render json: {
+        success: true
+      }
+    else
+      render json: {
+        success: false
+      }
+    end
+  end
+end
 end
diff --git a/app/controllers/users_controller.rb b/app/controllers/users_controller.rb
index 3f7e4615..86c103ba 100644
--- a/app/controllers/users_controller.rb
+++ b/app/controllers/users_controller.rb
@@ -1,3 +1,23 @@
 class UsersController < ApplicationController
+  def create
+    @user = User.new(user_params)
+    if @user.save
+      render json: {
+        user: {
+          username: @user.username,
+          email: @user.email,
+          password: @user.password
+        }
+      }
+    else
+      render json: {
+        success: false
+      }
+    end
+  end
 
+  private
+  def user_params
+    params.require(:user).permit(:username, :email, :password)
+  end
 end
diff --git a/app/models/session.rb b/app/models/session.rb
index 557f8903..c5446f46 100644
--- a/app/models/session.rb
+++ b/app/models/session.rb
@@ -1,3 +1,10 @@
 class Session < ApplicationRecord
+  belongs_to :user
 
+  before_validation :generate_session_token
+  
+  private
+    def generate_session_token
+      self.token = SecureRandom.urlsafe_base64
+    end
 end
diff --git a/app/models/user.rb b/app/models/user.rb
index a02d9a68..eb20e277 100644
--- a/app/models/user.rb
+++ b/app/models/user.rb
@@ -1,3 +1,11 @@
 class User < ApplicationRecord
+  validates :username, presence: true, length: { minimum: 3, maximum: 64 }
+  validates :email, presence: true, length: { minimum: 5, maximum: 500 } 
+  validates :password, presence: true, length: { minimum: 8, maximum: 64 } 
 
+  validates_uniqueness_of :username
+  validates_uniqueness_of :email
+
+  has_many :sessions
+  has_many :tweets
 end
diff --git a/config/routes.rb b/config/routes.rb
index 4405fd14..51e96f20 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -4,10 +4,10 @@
 
   # USERS
 
-
+  post '/users'                   => 'users#create'
   # SESSIONS
 
-
+  post '/sessions'                => 'sessions#create'
   # TWEETS
 
 
diff --git a/db/migrate/20220518131947_create_users.rb b/db/migrate/20220518131947_create_users.rb
new file mode 100644
index 00000000..a31e6838
--- /dev/null
+++ b/db/migrate/20220518131947_create_users.rb
@@ -0,0 +1,8 @@
+class CreateUsers < ActiveRecord::Migration[6.1]
+  def change
+    create_table :users do |t|
+
+      t.timestamps
+    end
+  end
+end
diff --git a/db/migrate/20220518132107_add_attributes_to_users.rb b/db/migrate/20220518132107_add_attributes_to_users.rb
new file mode 100644
index 00000000..af4e9d1a
--- /dev/null
+++ b/db/migrate/20220518132107_add_attributes_to_users.rb
@@ -0,0 +1,8 @@
+class AddAttributesToUsers < ActiveRecord::Migration[6.1]
+  def change
+    add_column :users, :username, :string
+    add_column :users, :email, :string
+    add_column :users, :password, :string
+    add_column :users, :timestamps, :datetime
+  end
+end
diff --git a/db/migrate/20220518135038_create_sessions.rb b/db/migrate/20220518135038_create_sessions.rb
new file mode 100644
index 00000000..93758cde
--- /dev/null
+++ b/db/migrate/20220518135038_create_sessions.rb
@@ -0,0 +1,8 @@
+class CreateSessions < ActiveRecord::Migration[6.1]
+  def change
+    create_table :sessions do |t|
+
+      t.timestamps
+    end
+  end
+end
diff --git a/db/migrate/20220518135219_add_attributes_to_sessions.rb b/db/migrate/20220518135219_add_attributes_to_sessions.rb
new file mode 100644
index 00000000..575b27fd
--- /dev/null
+++ b/db/migrate/20220518135219_add_attributes_to_sessions.rb
@@ -0,0 +1,6 @@
+class AddAttributesToSessions < ActiveRecord::Migration[6.1]
+  def change
+    add_column :sessions, :token, :string
+    add_column :sessions, :timestamps, :datetime
+  end
+end
diff --git a/db/migrate/20220518135320_add_user_id_to_sessions.rb b/db/migrate/20220518135320_add_user_id_to_sessions.rb
new file mode 100644
index 00000000..64b27f27
--- /dev/null
+++ b/db/migrate/20220518135320_add_user_id_to_sessions.rb
@@ -0,0 +1,5 @@
+class AddUserIdToSessions < ActiveRecord::Migration[6.1]
+  def change
+    add_belongs_to :sessions, :user
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index 77bcf0fe..f5d07f62 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -10,6 +10,24 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 0) do
+ActiveRecord::Schema.define(version: 2022_05_18_135320) do
+
+  create_table "sessions", force: :cascade do |t|
+    t.datetime "created_at", precision: 6, null: false
+    t.datetime "updated_at", precision: 6, null: false
+    t.string "token"
+    t.datetime "timestamps"
+    t.integer "user_id"
+    t.index ["user_id"], name: "index_sessions_on_user_id"
+  end
+
+  create_table "users", force: :cascade do |t|
+    t.datetime "created_at", precision: 6, null: false
+    t.datetime "updated_at", precision: 6, null: false
+    t.string "username"
+    t.string "email"
+    t.string "password"
+    t.datetime "timestamps"
+  end
 
 end

From f194e2343c4a20eafe67a87b839052a5ca47cf9f Mon Sep 17 00:00:00 2001
From: jg93pt <jorgebenf@gmail.com>
Date: Wed, 18 May 2022 16:06:18 +0100
Subject: [PATCH 2/7] models validated - users, sessions, tweets; controllers
 validated - users

---
 app/controllers/sessions_controller.rb                |  2 +-
 app/controllers/tweets_controller.rb                  |  2 +-
 app/controllers/users_controller.rb                   |  1 -
 app/models/session.rb                                 |  5 ++---
 app/models/tweet.rb                                   |  2 ++
 db/migrate/20220518144236_create_tweets.rb            |  8 ++++++++
 db/migrate/20220518144309_add_attributes_to_tweets.rb |  6 ++++++
 db/migrate/20220518144443_add_user_id_to_tweets.rb    |  5 +++++
 db/schema.rb                                          | 10 +++++++++-
 9 files changed, 34 insertions(+), 7 deletions(-)
 create mode 100644 db/migrate/20220518144236_create_tweets.rb
 create mode 100644 db/migrate/20220518144309_add_attributes_to_tweets.rb
 create mode 100644 db/migrate/20220518144443_add_user_id_to_tweets.rb

diff --git a/app/controllers/sessions_controller.rb b/app/controllers/sessions_controller.rb
index 7ee2dab8..350264be 100644
--- a/app/controllers/sessions_controller.rb
+++ b/app/controllers/sessions_controller.rb
@@ -17,4 +17,4 @@ def create
     end
   end
 end
-end
+
diff --git a/app/controllers/tweets_controller.rb b/app/controllers/tweets_controller.rb
index 1c4bc871..b5bda8cc 100644
--- a/app/controllers/tweets_controller.rb
+++ b/app/controllers/tweets_controller.rb
@@ -1,3 +1,3 @@
 class TweetsController < ApplicationController
-
+ 
 end
diff --git a/app/controllers/users_controller.rb b/app/controllers/users_controller.rb
index 86c103ba..e801f179 100644
--- a/app/controllers/users_controller.rb
+++ b/app/controllers/users_controller.rb
@@ -6,7 +6,6 @@ def create
         user: {
           username: @user.username,
           email: @user.email,
-          password: @user.password
         }
       }
     else
diff --git a/app/models/session.rb b/app/models/session.rb
index c5446f46..f9df615e 100644
--- a/app/models/session.rb
+++ b/app/models/session.rb
@@ -1,8 +1,7 @@
 class Session < ApplicationRecord
-  belongs_to :user
-
+  belongs_to :user, required:true
   before_validation :generate_session_token
-  
+
   private
     def generate_session_token
       self.token = SecureRandom.urlsafe_base64
diff --git a/app/models/tweet.rb b/app/models/tweet.rb
index 68958ab1..0b6efed3 100644
--- a/app/models/tweet.rb
+++ b/app/models/tweet.rb
@@ -1,3 +1,5 @@
 class Tweet < ApplicationRecord
+  belongs_to :user, required:true
 
+  validates :message, length: { maximum: 140 }, presence: true
 end
diff --git a/db/migrate/20220518144236_create_tweets.rb b/db/migrate/20220518144236_create_tweets.rb
new file mode 100644
index 00000000..95a9a4bf
--- /dev/null
+++ b/db/migrate/20220518144236_create_tweets.rb
@@ -0,0 +1,8 @@
+class CreateTweets < ActiveRecord::Migration[6.1]
+  def change
+    create_table :tweets do |t|
+
+      t.timestamps
+    end
+  end
+end
diff --git a/db/migrate/20220518144309_add_attributes_to_tweets.rb b/db/migrate/20220518144309_add_attributes_to_tweets.rb
new file mode 100644
index 00000000..9d2941e1
--- /dev/null
+++ b/db/migrate/20220518144309_add_attributes_to_tweets.rb
@@ -0,0 +1,6 @@
+class AddAttributesToTweets < ActiveRecord::Migration[6.1]
+  def change
+    add_column :tweets, :message, :string
+    add_column :tweets, :timestamps, :datetime
+  end
+end
diff --git a/db/migrate/20220518144443_add_user_id_to_tweets.rb b/db/migrate/20220518144443_add_user_id_to_tweets.rb
new file mode 100644
index 00000000..df623602
--- /dev/null
+++ b/db/migrate/20220518144443_add_user_id_to_tweets.rb
@@ -0,0 +1,5 @@
+class AddUserIdToTweets < ActiveRecord::Migration[6.1]
+  def change
+    add_column :tweets, :user_id, :integer
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index f5d07f62..84673c3e 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 2022_05_18_135320) do
+ActiveRecord::Schema.define(version: 2022_05_18_144443) do
 
   create_table "sessions", force: :cascade do |t|
     t.datetime "created_at", precision: 6, null: false
@@ -21,6 +21,14 @@
     t.index ["user_id"], name: "index_sessions_on_user_id"
   end
 
+  create_table "tweets", force: :cascade do |t|
+    t.datetime "created_at", precision: 6, null: false
+    t.datetime "updated_at", precision: 6, null: false
+    t.string "message"
+    t.datetime "timestamps"
+    t.integer "user_id"
+  end
+
   create_table "users", force: :cascade do |t|
     t.datetime "created_at", precision: 6, null: false
     t.datetime "updated_at", precision: 6, null: false

From 4786e56e66c7cd2601b5272da472b28e15aa1624 Mon Sep 17 00:00:00 2001
From: jg93pt <jorgebenf@gmail.com>
Date: Wed, 18 May 2022 16:25:48 +0100
Subject: [PATCH 3/7] Create Users and Sessions login, logout are working

---
 app/controllers/sessions_controller.rb    | 28 ++++++++++++++++++++++-
 app/models/user.rb                        |  9 +++++++-
 app/views/sessions/authenticated.jbuilder |  2 ++
 app/views/sessions/create.jbuilder        |  1 +
 app/views/users/create.jbuilder           |  3 +++
 config/routes.rb                          |  6 +++--
 6 files changed, 45 insertions(+), 4 deletions(-)
 create mode 100644 app/views/sessions/authenticated.jbuilder
 create mode 100644 app/views/sessions/create.jbuilder
 create mode 100644 app/views/users/create.jbuilder

diff --git a/app/controllers/sessions_controller.rb b/app/controllers/sessions_controller.rb
index 350264be..2ecd336d 100644
--- a/app/controllers/sessions_controller.rb
+++ b/app/controllers/sessions_controller.rb
@@ -1,7 +1,7 @@
 class SessionsController < ApplicationController
   def create
     @user = User.find_by(username: params[:user][:username])
-    if @user and @user.password == params[:user][:password]
+    if @user and BCrypt::Password.new(@user.password) == params[:user][:password]
       session = @user.sessions.create
       cookies.permanent.signed[:twitter_session_token] = {
         value: session.token,
@@ -16,5 +16,31 @@ def create
       }
     end
   end
+
+  def authenticated
+    token = cookies.permanent.signed[:twitter_session_token]
+    session = Session.find_by(token: token)
+    if session
+      user = session.user
+      render json: {
+        authenticated: true,
+        username: user.username
+      }
+    else
+      render json: {
+        authenticated: false
+      }
+    end
+  end
+
+  def destroy
+    token = cookies.permanent.signed[:twitter_session_token]
+    session = Session.find_by(token: token)
+    if session and session.destroy
+      render json: {
+        success: true
+      }
+    end
+  end
 end
 
diff --git a/app/models/user.rb b/app/models/user.rb
index eb20e277..8c0cff06 100644
--- a/app/models/user.rb
+++ b/app/models/user.rb
@@ -1,7 +1,14 @@
 class User < ApplicationRecord
   validates :username, presence: true, length: { minimum: 3, maximum: 64 }
   validates :email, presence: true, length: { minimum: 5, maximum: 500 } 
-  validates :password, presence: true, length: { minimum: 8, maximum: 64 } 
+  validates :password, presence: true, length: { minimum: 8, maximum: 64 }
+  
+  after_validation :hash_password
+  
+  private
+  def hash_password
+    self.password = BCrypt::Password.create(self.password)
+  end
 
   validates_uniqueness_of :username
   validates_uniqueness_of :email
diff --git a/app/views/sessions/authenticated.jbuilder b/app/views/sessions/authenticated.jbuilder
new file mode 100644
index 00000000..f6638459
--- /dev/null
+++ b/app/views/sessions/authenticated.jbuilder
@@ -0,0 +1,2 @@
+json.authenticated true
+json.username @user.username
diff --git a/app/views/sessions/create.jbuilder b/app/views/sessions/create.jbuilder
new file mode 100644
index 00000000..a1f56584
--- /dev/null
+++ b/app/views/sessions/create.jbuilder
@@ -0,0 +1 @@
+json.success true
diff --git a/app/views/users/create.jbuilder b/app/views/users/create.jbuilder
new file mode 100644
index 00000000..c7344393
--- /dev/null
+++ b/app/views/users/create.jbuilder
@@ -0,0 +1,3 @@
+json.user do
+  json.username @user.username
+end
\ No newline at end of file
diff --git a/config/routes.rb b/config/routes.rb
index 51e96f20..2e605403 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -3,11 +3,13 @@
   get '/feeds'                    => 'feeds#index'
 
   # USERS
-
   post '/users'                   => 'users#create'
-  # SESSIONS
 
+  # SESSIONS
+  get '/authenticated'            => 'sessions#authenticated'
   post '/sessions'                => 'sessions#create'
+  delete '/sessions'              => 'sessions#destroy'
+
   # TWEETS
 
 

From db894c70a70f0a52efd44cead74c119149442d8e Mon Sep 17 00:00:00 2001
From: jg93pt <jorgebenf@gmail.com>
Date: Wed, 18 May 2022 17:17:20 +0100
Subject: [PATCH 4/7] Tweets post created

---
 app/controllers/tweets_controller.rb | 24 +++++++++++++++++++++++-
 app/views/tweets/create.jbuilder     |  4 ++++
 config/routes.rb                     |  2 +-
 3 files changed, 28 insertions(+), 2 deletions(-)
 create mode 100644 app/views/tweets/create.jbuilder

diff --git a/app/controllers/tweets_controller.rb b/app/controllers/tweets_controller.rb
index b5bda8cc..9ecd54d8 100644
--- a/app/controllers/tweets_controller.rb
+++ b/app/controllers/tweets_controller.rb
@@ -1,3 +1,25 @@
 class TweetsController < ApplicationController
- 
+  def create
+    token = cookies.signed[:twitter_session_token]
+    session = Session.find_by(token: token)
+
+    if session
+      user = session.user
+      @tweet = user.tweets.new(tweet_params)
+
+      if @tweet.save
+        render 'tweets/create' # can be omitted
+      else
+        render json: { success: false }
+      end
+    else
+      render json: { success: false }
+    end
+  end
+
+  private
+
+  def tweet_params
+    params.require(:tweet).permit(:user, :message)
+  end
 end
diff --git a/app/views/tweets/create.jbuilder b/app/views/tweets/create.jbuilder
new file mode 100644
index 00000000..8ee6b7a3
--- /dev/null
+++ b/app/views/tweets/create.jbuilder
@@ -0,0 +1,4 @@
+json.tweet do
+  json.username @tweet.user.username
+  json.message @tweet.message 
+end
\ No newline at end of file
diff --git a/config/routes.rb b/config/routes.rb
index 2e605403..9700d3d9 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -11,7 +11,7 @@
   delete '/sessions'              => 'sessions#destroy'
 
   # TWEETS
-
+  post '/tweets'                   => 'tweets#create'
 
   # Redirect all other paths to index page, which will be taken over by AngularJS
   get '*path'    => 'homepage#index'

From 023248565c32f0b3d9ae2b9d4b6229d53d1f95cd Mon Sep 17 00:00:00 2001
From: jg93pt <jorgebenf@gmail.com>
Date: Wed, 18 May 2022 18:31:02 +0100
Subject: [PATCH 5/7] delete/:id created

---
 app/controllers/tweets_controller.rb | 24 ++++++++++++++++++++++++
 app/views/tweets/index.jbuilder      |  7 +++++++
 config/routes.rb                     |  5 ++++-
 3 files changed, 35 insertions(+), 1 deletion(-)
 create mode 100644 app/views/tweets/index.jbuilder

diff --git a/app/controllers/tweets_controller.rb b/app/controllers/tweets_controller.rb
index 9ecd54d8..b4ae4393 100644
--- a/app/controllers/tweets_controller.rb
+++ b/app/controllers/tweets_controller.rb
@@ -1,4 +1,10 @@
 class TweetsController < ApplicationController
+  def index
+    @tweets = Tweet.all
+    render 'tweets/index' # can be omitted
+  end
+
+
   def create
     token = cookies.signed[:twitter_session_token]
     session = Session.find_by(token: token)
@@ -17,6 +23,24 @@ def create
     end
   end
 
+  def destroy
+    token = cookies.signed[:twitter_session_token]
+    session = Session.find_by(token: token)
+
+    if session
+      user = session.user
+    @tweet = user.tweets.find_by(id: params[:id])
+
+    if @tweet and @tweet.destroy
+      render json: { success: true }
+    else
+      render json: { success: false }
+    end
+  else
+    render json: { success: false }
+  end
+ end
+
   private
 
   def tweet_params
diff --git a/app/views/tweets/index.jbuilder b/app/views/tweets/index.jbuilder
new file mode 100644
index 00000000..f0242e5c
--- /dev/null
+++ b/app/views/tweets/index.jbuilder
@@ -0,0 +1,7 @@
+json.tweets do
+  json.array! @tweets do |tweet|
+    json.id  tweet.id
+    json.username tweet.user.username
+    json.message tweet.message
+  end
+end
diff --git a/config/routes.rb b/config/routes.rb
index 9700d3d9..b3ad0d49 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -11,7 +11,10 @@
   delete '/sessions'              => 'sessions#destroy'
 
   # TWEETS
-  post '/tweets'                   => 'tweets#create'
+  get '/tweets'                   => 'tweets#index'
+  #get '/users/:username/tweets'   => 'tweets#index_by_user'
+  post '/tweets'                  => 'tweets#create'
+  delete '/tweets/:id'            => 'tweets#destroy'
 
   # Redirect all other paths to index page, which will be taken over by AngularJS
   get '*path'    => 'homepage#index'

From a54663469cae2cdf9f8bb5ed4fd275bd0928fbd8 Mon Sep 17 00:00:00 2001
From: jg93pt <jorgebenf@gmail.com>
Date: Wed, 18 May 2022 19:01:01 +0100
Subject: [PATCH 6/7] one rspec failing

---
 app/controllers/tweets_controller.rb | 9 +++++++++
 config/routes.rb                     | 2 +-
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/app/controllers/tweets_controller.rb b/app/controllers/tweets_controller.rb
index b4ae4393..548ac4f6 100644
--- a/app/controllers/tweets_controller.rb
+++ b/app/controllers/tweets_controller.rb
@@ -4,6 +4,15 @@ def index
     render 'tweets/index' # can be omitted
   end
 
+  def index_by_user
+    user = User.find_by(username: params[:username])
+    @tweets = Tweet.where(user_id: user.id)
+    if @tweets
+      render 'tweets/index' # can be omitted
+    else
+      render json: { tweets: [] }
+    end
+  end
 
   def create
     token = cookies.signed[:twitter_session_token]
diff --git a/config/routes.rb b/config/routes.rb
index b3ad0d49..cd2e7e99 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -12,7 +12,7 @@
 
   # TWEETS
   get '/tweets'                   => 'tweets#index'
-  #get '/users/:username/tweets'   => 'tweets#index_by_user'
+  get '/users/:username/tweets'   => 'tweets#index_by_user'
   post '/tweets'                  => 'tweets#create'
   delete '/tweets/:id'            => 'tweets#destroy'
 

From f103dbbce917b1054287ae4f53dc2882cfe9ee80 Mon Sep 17 00:00:00 2001
From: jg93pt <jorgebenf@gmail.com>
Date: Wed, 18 May 2022 19:47:27 +0100
Subject: [PATCH 7/7] solved last failure GET /tweets by adding order by id
 DESC in the index method

---
 app/controllers/tweets_controller.rb | 2 +-
 app/models/tweet.rb                  | 1 -
 2 files changed, 1 insertion(+), 2 deletions(-)

diff --git a/app/controllers/tweets_controller.rb b/app/controllers/tweets_controller.rb
index 548ac4f6..ce48b281 100644
--- a/app/controllers/tweets_controller.rb
+++ b/app/controllers/tweets_controller.rb
@@ -1,6 +1,6 @@
 class TweetsController < ApplicationController
   def index
-    @tweets = Tweet.all
+    @tweets = Tweet.all.order("id DESC")
     render 'tweets/index' # can be omitted
   end
 
diff --git a/app/models/tweet.rb b/app/models/tweet.rb
index 0b6efed3..3867068e 100644
--- a/app/models/tweet.rb
+++ b/app/models/tweet.rb
@@ -1,5 +1,4 @@
 class Tweet < ApplicationRecord
   belongs_to :user, required:true
-
   validates :message, length: { maximum: 140 }, presence: true
 end