Sign In, Sign Out 325 in Java

Draw Data Matrix 2d barcode in Java Sign In, Sign Out 325
9
Data Matrix ECC200 Encoder In Java
Using Barcode drawer for Java Control to generate, create Data Matrix image in Java applications.
Sign In, Sign Out 325
Bar Code Encoder In Java
Using Barcode generation for Java Control to generate, create barcode image in Java applications.
Sessions 325 911 Sessions Controller 326 912 Signin Form 328 Signin Failure 332 921 Reviewing form Submission 333 922 Failed Signin (Test and Code) 335 Signin Success 338 931 The Completed create Action 338 932 Remember Me 340 933 Current User 345 Signing Out 354 941 Destroying Sessions 354 942 Signin Upon Signup 356 943 Changing the Layout Links 358 944 Signin/Out Integration Tests 362
Bar Code Scanner In Java
Using Barcode scanner for Java Control to read, scan read, scan image in Java applications.
Contents
Encode ECC200 In Visual C#
Using Barcode creation for VS .NET Control to generate, create Data Matrix 2d barcode image in VS .NET applications.
95 96
Data Matrix ECC200 Printer In .NET
Using Barcode creation for ASP.NET Control to generate, create Data Matrix ECC200 image in ASP.NET applications.
Conclusion 363 Exercises 363
Draw DataMatrix In VS .NET
Using Barcode drawer for Visual Studio .NET Control to generate, create Data Matrix ECC200 image in .NET framework applications.
10
Data Matrix Maker In VB.NET
Using Barcode encoder for .NET Control to generate, create ECC200 image in VS .NET applications.
Updating, Showing, and Deleting Users 365
Code 128 Code Set B Printer In Java
Using Barcode maker for Java Control to generate, create Code 128B image in Java applications.
105 106
Paint Bar Code In Java
Using Barcode encoder for Java Control to generate, create bar code image in Java applications.
Updating Users 365 1011 Edit Form 366 1012 Enabling Edits 373 Protecting Pages 376 1021 Requiring Signed-In Users 376 1022 Requiring the Right User 379 1023 Friendly Forwarding 382 Showing Users 384 1031 User Index 385 1032 Sample Users 389 1033 Pagination 392 1034 Partial Refactoring 398 Destroying Users 399 1041 Administrative Users 399 1042 The destroy Action 404 Conclusion 408 Exercises 409
Paint GS1-128 In Java
Using Barcode generator for Java Control to generate, create EAN 128 image in Java applications.
11
Printing Barcode In Java
Using Barcode encoder for Java Control to generate, create barcode image in Java applications.
User Microposts 411
Generating Barcode In Java
Using Barcode creator for Java Control to generate, create barcode image in Java applications.
A Micropost Model 411 1111 The Basic Model 412 1112 User/Micropost Associations 414 1113 Micropost Refinements 419 1114 Micropost Validations 423 112 Showing Microposts 425 1121 Augmenting the User Show Page 426 1122 Sample Microposts 432 113 Manipulating Microposts 434 1131 Access Control 436 1132 Creating Microposts 439 1133 A Proto-feed 444 1134 Destroying Microposts 452 1135 Testing the New Home Page 456
Printing Uniform Symbology Specification ITF In Java
Using Barcode generator for Java Control to generate, create USS ITF 2/5 image in Java applications.
Contents
Generate Code 128 Code Set A In .NET
Using Barcode encoder for ASP.NET Control to generate, create Code128 image in ASP.NET applications.
xiii
Encoding Bar Code In .NET
Using Barcode encoder for .NET Control to generate, create barcode image in .NET framework applications.
114 115
USS Code 128 Generator In C#
Using Barcode generator for .NET Control to generate, create USS Code 128 image in Visual Studio .NET applications.
Conclusion 457 Exercises 458
Bar Code Decoder In VS .NET
Using Barcode reader for VS .NET Control to read, scan read, scan image in Visual Studio .NET applications.
12
Generate Bar Code In C#
Using Barcode generation for .NET Control to generate, create bar code image in VS .NET applications.
Following Users 461
Read Barcode In Java
Using Barcode decoder for Java Control to read, scan read, scan image in Java applications.
125 Index
Code 128 Printer In VB.NET
Using Barcode creation for VS .NET Control to generate, create ANSI/AIM Code 128 image in Visual Studio .NET applications.
The Relationship Model 463 1211 A Problem with the Data Model (and a Solution) 464 1212 User/Relationship Associations 470 1213 Validations 473 1214 Following 474 1215 Followers 479 A Web Interface for Following and Followers 482 1221 Sample Following Data 482 1222 Stats and a Follow Form 484 1223 Following and Followers Pages 494 1224 A Working Follow Button the Standard Way 498 1225 A Working Follow Button with Ajax 502 The Status Feed 507 1231 Motivation and Strategy 508 1232 A First Feed Implementation 511 1233 Scopes, Subselects, and a Lambda 513 1234 The New Status Feed 518 Conclusion 519 1241 Extensions to the Sample Application 520 1242 Guide to Further Resources 522 Exercises 523 527
This page intentionally left blank
Foreword
My former company (CD Baby) was one of the first to loudly switch to Ruby on Rails, and then even more loudly switch back to PHP (Google me to read about the drama) This book by Michael Hartl came so highly recommended that I had to try it, and Ruby on Rails 3 Tutorial is what I used to switch back to Rails again Though I ve worked my way through many Rails books, this is the one that finally made me get it Everything is done very much the Rails way a way that felt very unnatural to me before, but now after doing this book finally feels natural This is also the only Rails book that does test-driven development the entire time, an approach highly recommended by the experts but which has never been so clearly demonstrated before Finally, by including Git, GitHub, and Heroku in the demo examples, the author really gives you a feel for what it s like to do a real-world project The tutorial s code examples are not in isolation The linear narrative is such a great format Personally, I powered through Rails Tutorial in three long days, doing all the examples and challenges at the end of each chapter Do it from start to finish, without jumping around, and you ll get the ultimate benefit Enjoy! Derek Sivers (siversorg) Founder, CD Baby and Thoughts, Ltd
This page intentionally left blank
Foreword
If I want to learn web development with Ruby on Rails, how should I start For years Michael Hartl has provided the answer as author of the RailsSpace tutorial in our series and now the new Ruby on Rails 3 Tutorial that you hold in your hands (or PDF reader, I guess) I m so proud of having Michael on the series roster He is living, breathing proof that we Rails folks are some of the luckiest in the wide world of technology Before getting into Ruby, Michael taught theoretical and computational physics at Caltech for six years, where he received the Lifetime Achievement Award for Excellence in Teaching in 2000 He is a Harvard graduate, has a PhD in Physics from Caltech, and is an alumnus of Paul Graham s esteemed Y Combinator program for entrepreneurs And what does Michael apply his impressive experience and teaching prowess to Teaching new software developers all around the world how to use Ruby on Rails effectively! Lucky we are indeed! The availability of this tutorial actually comes at a critical time for Rails adoption We re five years into the history of Rails and today s version of the platform has unprecedented power and flexibility Experienced Rails folks can leverage that power effectively, but we re hearing growing cries of frustration from newcomers The amount of information out there about Rails is fantastic if you know what you re doing already However, if you re new, the scope and mass of information about Rails can be mind-boggling Luckily, Michael takes the same approach as he did in his first book in the series, building a sample application from scratch, and writes in a style that s meant to be read from start to finish Along the way, he explains all the little details that are likely to trip up beginners Impressively, he goes beyond just a straightforward explanation of what Rails does and ventures into prescriptive advice about good software development xvii