RubyLearning / ProjectTrak / vendor / rails / railties / doc / guides / source / actioncontroller_basics / cookies.txt

== Cookies ==

Your application can store small amounts of data on the client - called cookies - that will be persisted across requests and even sessions. Rails provides easy access to cookies via the `cookies` method, which - much like the `session` - works like a hash:

[source, ruby]
class CommentsController < ApplicationController

  def new
    #Auto-fill the commenter's name if it has been stored in a cookie
    @comment = => cookies[:commenter_name])

  def create
    @comment =[:comment])
      flash[:notice] = "Thanks for your comment!"
      if params[:remember_name]
        # Remember the commenter's name
        cookies[:commenter_name] =
        # Don't remember, and delete the name if it has been remembered before
      redirect_to @comment.article
      render :action => "new"


Note that while for session values, you set the key to `nil`, to delete a cookie value, you should use `cookies.delete(:key)`.
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