By Yehuda Katz, Ryan Bigg
Rails three in Action
is a collaboration among Rails neighborhood leaders, Ryan Bigg and Yehuda Katz, that covers Rails 3.1 making it the main up to date source on hand. yet it's even more than simply a Rails three reference e-book. You'll learn how to do Rails definitely the right method, so that you can construct sturdy, scalable, and maintainable apps that would fulfill even the main tough clients.
About the Book
Rails three is a whole stack, open resource internet framework powered by means of Ruby and this e-book is an creation to it. even if you're simply beginning otherwise you have a number of cycles lower than your belt, you'll relish the book's guru's-eye-view of idiomatic Rails programming.
You'll grasp Rails 3.1 by means of constructing a price ticket monitoring program that incorporates RESTful routing, authentication and authorization, nation upkeep, dossier uploads, electronic mail, and extra. You'll additionally discover strong beneficial properties like designing your individual APIs and development a Rails engine. you can find try pushed improvement and behaviour pushed improvement in motion during the publication, similar to you are going to in a most sensible Rails shop.
It is useful for readers to have a historical past in Ruby, yet no earlier Rails adventure is needed.
What's Inside* Covers Rails 3.1 from the floor up
* checking out and BDD utilizing RSpec and Cucumber
* operating with Rack
Table of Contents<ol>* Ruby on Rails, the framework
* trying out saves your bacon
* constructing a true Rails application
* Oh CRUD!
* Nested resources
* Authentication and simple authorization
* easy entry control
* extra authorization
* dossier uploading
* monitoring state
* Sending email
* Designing an API
* substitute authentication
* simple functionality enhancements
* Rack-based applications
Read or Download Rails 3 in Action PDF
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Extra info for Rails 3 in Action
With the scaffold generator, you get an awful lot for free. Going back to the view, the block for the form_for is defined between its do and the %> at the end of the file. any? method. These errors will come from the model if the object did not pass the validation requirements set in the model. If any errors exist, they’re rendered by the content inside this if statement. Validation is a concept covered shortly. The second half of this partial looks like the following listing. submit %>
<% end %> Download from Wow!
When this method fails, it fails the test and raises an exception. Go ahead, try putting 1 there instead of true. It still works: . 1 tests, 1 assertions, 0 failures, 0 errors, 0 skips In the following listing, you remove the test_ from the beginning of your method and define it as simply a truth method. rb, alternate truth test def truth assert true end Download from Wow! com> Test-driven development 27 Test::Unit tells you there were no tests specified by running the default_test method internal to Test::Unit: No tests were specified.
Up part of this migration. sqlite3 and then creates the purchases table inside that. up method from the latest migration but runs any migration that hasn’t yet been run, allowing you to run multiple migrations sequentially. Your application is, by default, already set up to talk to this new database, so you don’t need to change anything. define(:version => [timestamp]) do This version should match the prefix of the migration you just created, 12 and Rails uses this value to know what migration it’s up to.