Connected User to Post

app/controllers/posts_controller.rb

 class PostsController < ApplicationController
   before_action :authenticate_user!
   def index
-  	@posts = Post.all
+  	@posts = current_user.posts
   end
 
   def show
@@ -9,11 +9,11 @@ class PostsController < ApplicationController
   end
 
   def new
-  	@post = Post.new
+  	@post = current_user.posts.new
   end
 
   def create
-  	@post = Post.new(post_params)
+  	@post = current_user.posts.new(post_params)
 
   	if @post.save
   		redirect_to posts_path, notice: "You have successfully created a new post."

app/models/post.rb

 class Post < ApplicationRecord
+	belongs_to :user
 end
\ No newline at end of file

app/models/user.rb

@@ -3,4 +3,13 @@ class User < ApplicationRecord
   # :confirmable, :lockable, :timeoutable and :omniauthable
   devise :database_authenticatable, :registerable,
          :recoverable, :rememberable, :trackable, :validatable
+  has_many :posts
+
+  def to_s
+  	if first_name && last_name
+  		"#{first_name} #{last_name}"
+  	else
+  		email
+  	end
+  end
 end
\ No newline at end of file

app/views/posts/index.html.erb

@@ -15,6 +15,7 @@
 		<thead>
 			<th>Title</th>
 			<th>Content</th>
+			<th>Posted by</th>
 			<th colspan="3"></th>
 		</thead>
 		<tbody>
@@ -26,6 +27,9 @@
 				<td>
 					<%= post.content %>
 				</td>
+				<td>
+					<%= post.user %>
+				</td>
 				<td>
 					<%= link_to "Show", post_path(post), class: "btn btn-primary" %>
 				</td>

db/migrate/20180711133212_add_users_to_posts.rb

+class AddUsersToPosts < ActiveRecord::Migration[5.2]
+  def change
+    add_reference :posts, :user, foreign_key: true
+  end
+end