1. we will first finish the create action:
def create user = User.authenticate(params[:session][:email], params[:session][:password]) if user.nil? flash.now[:error] = "Invalid email/password combination." @title = "Sign in" render 'new' else sign_in user redirect_to user end end
for the below, we will write sign_in method!!!
2. start from TDD again!!!
describe SessionsController do . . . describe "POST 'create'" do . . . describe "with valid email and password" do before(:each) do @user = Factory(:user) @attr = { :email => @user.email, :password => @user.password } end it "should sign the user in" do post :create, :session => @attr # Fill in with tests for a signed-in user. end it "should redirect to the user show page" do post :create, :session => @attr response.should redirect_to(user_path(@user)) end end end end
3. in this section, we will need some methods that are need to in both controller and view,
for view, we can define the method in SessionHelpr, (the method in all helpers are viewable for all views.)
to make controller see this method, we just need to include this module into the controller.
class ApplicationController < ActionController::Base protect_from_forgery include SessionsHelper end
4. session and cookies:
Because HTTP is a stateless protocol, web applications requiring user signin must implement a way to track each user’s progress from page to page. One technique for maintaining the user signin status is to use a traditional Rails session (via the special session function) to store a remember token equal to the user’s id:
session[:remember_token] = user.id
User.find_by_id(session[:remember_token])
module SessionHelper def sign_in(user) cookies.permanent.signed[:remember_token] = [user.id, user.salt] self.current_user = user end end
cookies[:remember_token] = {:value => user.id, :expires => 20.years.from_now.utc}
User.find_by_id(cookies[:remember_token])
cookies.permanent.signed[:remember_token] = [user.id, user.salt]
self.current_user = user
redirect_to current_user
it "should sign the user in" do post :create, :session => @attr controller.current_user.should == @user controller.should be_signed_in end
controller.should be_signed_in
controller.signed_in?.should be_true
self.current_user = user
def current_user=(user) @current_user = user end
def current_user @current_user end
attr_accessor :current_user
def current_user @current_user ||= user_from_remember_token end private def user_from_remember_token User.authenticate_with_salt(*remember_token) end def remember_token cookies.signed[:remember_token] || [nil, nil] end end
def foo(bar, baz) bar + baz end foo(*[1,2]) ====> 3
cookies.signed[:remember_token] || [nil, nil]
def self.authenticate_with_salt(id, cookie_salt) user = find_by_id(id) (user && user.salt == cookie_salt) ? user : nil end
this is very traditional rails code, you really should get used to it!!!
d. we still need to define the signed_in method.
def signed_in?
!current_user.nil?
end
发表评论
-
12.3.3 scaling issue of the status feed
2011-10-30 17:54 824the problem of the implementati ... -
12.3 the status feed
2011-10-30 15:34 8601. we need to get all the micro ... -
12.2 a working follow button with Ajax
2011-10-29 18:10 9141. in the last chapter, in the ... -
12.2 a web interface for following and followers.
2011-10-28 22:14 8791.before we do the UI, we need ... -
12. following user, 12.1 relationship model
2011-10-18 14:29 7551. we need to use a relationshi ... -
11.3 manipulating microposts.
2011-10-17 15:31 9001. since all micropost actions ... -
11.2 show microposts.
2011-10-17 12:01 7051. add test to test the new use ... -
11.1 user micropost -- a micropost model.
2011-10-17 10:43 11081. we will first generate a mic ... -
10.4 destroying users.
2011-10-16 15:47 746in this chapter, we will add de ... -
10.3 showing users list
2011-10-15 20:41 774in this chapter, we will do use ... -
10.2 protect pages.
2011-10-15 15:11 667again, we will start from TD ... -
10.1 updating users.
2011-10-14 18:30 7101. git checkout -b updating-use ... -
9.4 sign out
2011-10-13 15:21 737whew!!!, last chapter is a long ... -
9.1 about flash.now[:error] vs flash[:error]
2011-10-12 15:37 727There’s a subtle difference ... -
9.2 sign in failure
2011-10-12 12:19 660start from TDD!!! 1. requir ... -
9.1 sessions
2011-10-12 10:00 645a session is a semi-permanent c ... -
what test framework should you use?
2011-10-11 16:56 0for integration test, i have no ... -
what test framework should you use?
2011-10-11 16:56 0<p>for integration test, ... -
8.4 rspec integration tests
2011-10-11 16:53 723in integration test, you can te ... -
8.3 sign up success
2011-10-11 14:39 782Chapter 8.3 this part, we will ...
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