create.html.erb

<h1>Add a new thought</h1>

<%= form_for @thoughts do |f| %>
	<%= f.label :thought %>
	<%= f.text_field :thought %>
<% end %>

thoughts_controller.rb

class ThoughtsController < ApplicationController
  def index
    @thoughts = Thought.all
  end

  def create
    @thoughts = Thought.new
  end

  def update
  end

  def delete
  end

  def view
  end
end