Couldn't find Article without an ID [duplicate] - ruby-on-rails

Question

I am trying to submit some data to db and its ok but when i am trying to retrieve those data show that Couldn't find Article without an ID.ils 4.0.1.
I am using ruby 2.0.0 and ra
def show
#article=Article.find(params[:id])
end
the ** contain error.
class ArticlesController < ApplicationController
def new
end
def create
#article = Article.new(article_params)
redirect_to #article
#article.save
end
def show
#article=Article.find(params[:id])
end
private
def article_params
params.require(:article).permit(:title, :full_name, :email, :phone_number, :message)
end
end
articles/show.html.erb
<p>
<strong>Title:</strong>
<%= #article.title %>
</p>
<p>
<strong>Full Name:</strong>
<%= #article.full_name %>
</p>
<p>
<strong>Email:</strong>
<%= #article.email %>
</p>
<p>
<strong>Phone Number:</strong>
<%= #article.phone_number %>
</p>
<p>
<strong>Message:</strong>
<%= #article.message %>
</p>
articles/new.html.erb
<h1>New Articles</h1>
<%= form_for :article, url: articles_path do |f| %>
<p>
<%= f.label :title %>
<%= f.text_field :title %>
<p>
<%= f.label :full_name %>
<%= f.text_field :full_name %>
</p>
<%= f.label :email %>
<%= f.text_field :email %>
<p>
<%= f.label :phone_number %>
<%= f.text_field :phone_number %>
</p>
<%= f.label :message %>
<%= f.text_field :message %>
<p>
<%= f.submit :send_message %>
</p>
<% end %>

Answer 1

You are redirecting before actually saving your article.
This:
def create
#article = Article.new(article_params)
redirect_to #article
#article.save
end
should be:
def create
#article = Article.new(article_params)
#article.save
redirect_to #article
end
And if you want to add some error handling as well:
def create
#article = Article.new(article_params)
if #article.save
redirect_to #article
else
render :new
end