New PDF release: Agile Web Development with Rails (Pragmatic Programmers)

By Sam Ruby

ISBN-10: 1934356549

ISBN-13: 9781934356548

Ruby on Rails is helping you produce top of the range, beautiful-looking internet functions speedy. you think about growing the appliance, and Rails looks after the main points. Tens of hundreds of thousands of builders have used this award-winning booklet to benefit Rails. it is a extensive, far-reaching instructional and reference that is suggested through the Rails center crew. in case you are new to Rails, you will get step by step tips. if you are an skilled developer, this publication offers you the excellent, insider info you wish. Rails has advanced through the years, and this e-book has advanced in addition to it. We nonetheless commence with a step by step walkthrough of creating a true program, and in-depth chapters examine the integrated Rails gains. This variation now provides new Ruby and Rails clients additional info at the Ruby language and takes extra time to give an explanation for key strategies all through. top practices on easy methods to follow Rails proceed to alter, and this variation retains up. Examples use cookie subsidized classes, HTTP authentication, and energetic Record-based kinds, and the e-book focuses all through at the correct approach to use Rails. also, this variation now displays Ruby 1.9, a brand new unlock of Ruby with sizeable practical and function advancements.

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Well, we could just hack. After all, a Rails application is just Ruby source code. But Rails also does a lot of magic behind the curtain to get our applications to work with a minimum of explicit configuration. To get this magic to work, Rails needs to find all the various components of your application. 1, Where Things Go, on page 259), this means we need to create a specific directory structure, slotting the code we write into the appropriate places. The rails command simply creates this directory structure for us and populates it with some standard Rails code.

Regular Expressions A regular expression lets you specify a pattern of characters to be matched in a string. In Ruby, you typically create a regular expression by writing /pattern/ or %r{pattern}. For example, you could write a pattern that matches a string containing the text Perl or the text Python using the regular expression /Perl|Python/. The forward slashes delimit the pattern, which consists of the two things we’re matching, separated by a vertical bar (|).

It is only meant to explain enough Ruby that the examples in the book make sense. This chapter draws heavily from material in Chapter 2 of Programming Ruby [TFH08]. If you think you need more background on the Ruby language, and at the risk of being grossly self-serving, we’d like to suggest that the best way to learn Ruby, and the best reference for Ruby’s classes, modules, and libraries, is Programming Ruby [TFH08] (also known as the PickAxe book). Welcome to the Ruby community! 1 Ruby Is an Object-Oriented Language Everything you manipulate in Ruby is an object, and the results of those manipulations are themselves objects.

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Agile Web Development with Rails (Pragmatic Programmers) by Sam Ruby


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