Download e-book for kindle: Agile Web Development with Rails 5 by Sam Ruby

By Sam Ruby

ISBN-10: 1680501712

ISBN-13: 9781680501711

Rails five and Ruby 2.2 carry many advancements, together with new APIs and massive functionality improvements, and the 5th version of this award-winning vintage is now up-to-date! if you are new to Rails, you will get step by step counsel. if you are an skilled developer, this e-book offers you the great, insider info you wish for the newest model of Ruby on Rails.

Ruby on Rails is helping you produce fine quality, beautiful-looking internet functions fast. you consider growing the appliance, and Rails looks after the main points. study Rails the best way the Rails middle crew recommends it, in addition to the tens of millions of builders who've used this huge, far-reaching instructional and reference.

We commence with a step by step walkthrough of establishing a true software, and in-depth chapters examine the integrated Rails beneficial properties. persist with in addition to a longer educational as you write a web based shop software. do away with tedious configuration and house responsibilities; internationalize your functions; comprise Ajax, leisure, internet companies, and email dealing with into your functions; try out your purposes as you write them utilizing the integrated trying out frameworks; and install your functions simply and securely. New during this variation is assurance of motion Cable, and fully up-to-date code for Rails 5.

Rails 1.0 used to be published in December 2005, greater than 10 years in the past. This ebook used to be there from the beginning, and did not simply evolve along Rails, it advanced with Rails. it's been built in session with the Rails middle crew. in truth, Rails itself is proven opposed to the code during this book.

What You Need:

All you would like is a home windows, Mac OS X, or Linux computer to do improvement on. This booklet will take you thru the stairs to put in Rails and its dependencies. for those who are not accustomed to the Ruby programming language, this ebook features a bankruptcy that covers the fundamentals essential to comprehend the cloth within the book.

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Sample text

Object-Relational Mapping Object-relational mapping (ORM) libraries map database tables to classes. If a database has a table called orders, our program will have a class named Order. Rows in this table correspond to objects of the class—a particular order is represented as an object of the Order class. Within that object, attributes are used to get and set the individual columns. Our Order object has methods to get and set the amount, the sales tax, and so on. In addition, the Rails classes that wrap our database tables provide a set of class-level methods that perform table-level operations.

Report erratum • discuss Chapter 2. Instant Gratification • 32 This approach would certainly work, but it’s a bit fragile. If we were to move our application to a different place on the web server, the URLs would no longer be valid. It also encodes assumptions about the Rails URL format into our code; it’s possible a future version of Rails could change that format. Fortunately, these aren’t risks we have to take. Rails comes with a bunch of helper methods that can be used in view templates. Here, we’ll use the link_to() helper method, which creates a hyperlink to an action.

This creates a link to a URL that will invoke the goodbye() action. The first parameter in the call to link_to() is the text to be displayed in the hyperlink, and the next parameter tells Rails to generate the link to the goodbye() action. Let’s stop for a minute to consider how we generated the link. We wrote this: link_to "Goodbye", say_goodbye_path First, link_to() is a method call. ) If you come from a language such as Java, you might be surprised that Ruby doesn’t insist on parentheses around method parameters.

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Agile Web Development with Rails 5 by Sam Ruby


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