articles controller

class ArticlesController < ApplicationController
def show
@article = Article.find(params[:id])
end

def index
    @articles = Article.all
end

def new
    @article = Article.new
end

def create
 @article = Article.new(params.require(:article).permit(:title, :description))
 if @article.save
   redirect_to @article
 else
   render 'new'
 end
end

end

new.html.erb

Create a new article

<% if @article.errors.any? %>

The following errors prevented the article from being saved

<% @article.errors.full_messages.each do |msg| %>

• <%= msg %>

<% end %>

<%= form_with scope: :article, url: articles_path, local: true do |f|%>

<p>
    <%= f.label :title%><br>
    <%= f.text_field :title%>
</p>

<p>
    <%= f.label :description%><br>
    <%= f.text_area :description%>
</p>

<p>
    <%= f.submit%>
</p>

<% end %>