undefined method `each' for nil:NilClass - help needed - ruby-on-rails

Question

I am teaching myself Ruby on Rails and trying to build a blog through a tutorial. I saw some of these answers, and it seems as though my syntax is right, but I'm getting the error in the title.
Here is my articles_controller code:
class ArticlesController < ApplicationController
before_action :set_article, only: [:edit, :update, :show, :destroy]
def index
#articles = Article.paginate(page: params[:page], per_page: 5)
end
def new
#article = Article.new
end
def edit
end
def create
#article = Article.new(article_params)
#article.user = User.first
if #article.save
flash[:success] = "Article was successfully created"
redirect_to article_path(#article)
else
render 'new'
end
end
def update
if #article.update(article_params)
flash[:success] = "Article was updated"
redirect_to article_path(#article)
else
flash[:danger] = "Article was not updated"
render 'edit'
end
end
def show
end
def destroy
#article.destroy
flash[:danger] = "Article was deleted"
redirect_to articles_path
end
private
def set_article
#article = Article.find(params[:id])
end
def article_params
params.require(:article).permit(:title, :description)
end
end
And here is my index.html.erb:
<h1 align="center">Listing all articles</h1>
<% #articles.each do |article| %>
<div class="row">
<div class="col-xs-8 col-xs-offset-2">
<div class="well well-lg">
<div class="article-title">
<%= link_to article.title, article_path(article) %>
</div>
<div class="article-body">
<%= truncate(article.description, length: 100) %>
</div>
<div class="article-meta-details">
<small>Created by: <%= article.user.username if article.user %>, <%= time_ago_in_words(article.created_at) %> ago, last updated: <%= time_ago_in_words(article.updated_at) %> ago</small>
</div>
<div class="article-actions">
<%= link_to "Edit", edit_article_path(article), class: "btn btn-xs btn-primary" %>
<%= link_to "Delete", article_path(article), method: :delete, data: { confirm: "Are you sure you want to delete this article?"}, class: "btn btn-xs btn-danger" %>
</div>
</div>
</div>
</div>
<% end %>
I would appreciate any help I can get. Thanks.

Answer 1

I think your syntax in the index method is wrong.
#articles = Article.paginate(page: params[:page], per_page: 5)
Should be
#articles = Article.all.paginate(page: params[:page], per_page: 5)