8: Sign Up in Java

Create DataMatrix in Java 8: Sign Up
8: Sign Up
Data Matrix ECC200 Encoder In Java
Using Barcode creation for Java Control to generate, create DataMatrix image in Java applications.
A failed signup form submission with the password field cleared
Creating Barcode In Java
Using Barcode drawer for Java Control to generate, create bar code image in Java applications.
Listing 823 A template for testing for each field on the signup form
Bar Code Reader In Java
Using Barcode decoder for Java Control to read, scan read, scan image in Java applications.
spec/controllers/users_controller_specrb
Data Matrix ECC200 Printer In Visual C#.NET
Using Barcode encoder for .NET framework Control to generate, create DataMatrix image in .NET applications.
require 'spec_helper' describe UsersController do render_views describe "GET 'new'" do it "should have a name field" do get :new responseshould have_selector("input[name='user[name]'][type='text']")
Making DataMatrix In Visual Studio .NET
Using Barcode creator for ASP.NET Control to generate, create ECC200 image in ASP.NET applications.
Exercises
Generate DataMatrix In .NET
Using Barcode creator for VS .NET Control to generate, create Data Matrix image in .NET framework applications.
end it "should have an email field" it "should have a password field"
ECC200 Maker In Visual Basic .NET
Using Barcode encoder for .NET Control to generate, create DataMatrix image in .NET framework applications.
it "should have a password confirmation field" end end
Painting UPC A In Java
Using Barcode maker for Java Control to generate, create GS1 - 12 image in Java applications.
Listing 824 The flash ERb in the site layout using content_tag
Code 39 Extended Creation In Java
Using Barcode drawer for Java Control to generate, create USS Code 39 image in Java applications.
app/views/layouts/applicationhtmlerb
Create Barcode In Java
Using Barcode generator for Java Control to generate, create barcode image in Java applications.
<!DOCTYPE html> <html> <section class="round"> <% flasheach do |key, value| %> <%= content_tag(:div, value, :class => "flash #{key}") %> <% end %> <%= yield %> </section> </html>
Generating ECC200 In Java
Using Barcode generator for Java Control to generate, create ECC200 image in Java applications.
This page intentionally left blank
EAN 128 Generator In Java
Using Barcode creator for Java Control to generate, create USS-128 image in Java applications.
C HAPTER 9
Draw UCC - 12 In Java
Using Barcode drawer for Java Control to generate, create UPC E image in Java applications.
Sign In, Sign Out
Create Data Matrix ECC200 In Visual Basic .NET
Using Barcode creator for Visual Studio .NET Control to generate, create Data Matrix ECC200 image in VS .NET applications.
Now that new users can sign up for our site ( 8), it s time to give registered users the ability to sign in and sign out This will allow us to add customizations based on signin status and depending on the identity of the current user For example, in this chapter we ll update the site header with signin/signout links and a profile link; in 11, we ll use the identity of a signed-in user to create microposts associated with that user, and in 12 we ll allow the current user to follow other users of the application (thereby receiving a feed of their microposts) Having users sign in will also allow us to implement a security model, restricting access to particular pages based on the identity of the signed-in user For instance, as we ll see in 10, only signed-in users will be able to access the page used to edit user information The signin system will also make possible special privileges for administrative users, such as the ability (also in 10) to delete users from the database As in previous chapters, we ll do our work on a topic branch and merge in the changes at the end:
Paint USS Code 39 In Visual C#.NET
Using Barcode creation for .NET framework Control to generate, create Code 39 Extended image in .NET framework applications.
$ git checkout -b sign-in-out
Generating Code-39 In .NET Framework
Using Barcode encoder for .NET framework Control to generate, create Code-39 image in Visual Studio .NET applications.
91 Sessions
Generate Code 128 In .NET
Using Barcode generator for ASP.NET Control to generate, create USS Code 128 image in ASP.NET applications.
A session is a semi-permanent connection between two computers, such as a client computer running a web browser and a server running Rails There are several different models for session behavior common on the web: forgetting the session on browser close, using an optional remember me checkbox for persistent sessions, and remembering sessions 325
Create Bar Code In VS .NET
Using Barcode creator for .NET framework Control to generate, create bar code image in VS .NET applications.
9: Sign In, Sign Out
Print Bar Code In .NET Framework
Using Barcode encoder for .NET framework Control to generate, create bar code image in Visual Studio .NET applications.
until the user explicitly signs out1 We ll opt for the final of these options: when users sign in, we will remember their signin status forever ,2 clearing the session only when the user explicitly signs out It s convenient to model sessions as a RESTful resource: we ll have a signin page for new sessions, signing in will create a session, and signing out will destroy it We will therefore need a Sessions controller with new, create, and destroy actions Unlike the case of the Users controller, which uses a database back-end (via the User model) to persist data, the Sessions controller will use a cookie, which is a small piece of text placed on the user s browser Much of the work involved in signin comes from building this cookie-based authentication machinery In this section and the next, we ll prepare for this work by constructing a Sessions controller, a signin form, and the relevant controller actions (Much of this work parallels user signup from 8) We ll then complete user signin with the necessary cookie-manipulation code in Section 93
Code 128A Generator In Visual Basic .NET
Using Barcode printer for .NET Control to generate, create Code 128 Code Set B image in Visual Studio .NET applications.
911 Sessions Controller
The elements of signing in and out correspond to particular REST actions of the Sessions controller: the signin form is handled by the new action (covered in this section), actually signing in is handled by sending a POST request to the create action (Section 92 and Section 93), and signing out is handled by sending a DELETE request to the destroy action (Section 94) (Recall the association of HTTP verbs with REST actions from Table 62) Since we know that we ll need a new action, we can create it when we generate the Sessions controller (just as with the Users controller in Listing 523):3