Agile Web Development with Rails, Third Edition by Sam Ruby, Dave Thomas, David Heinemeier Hansson

By Sam Ruby, Dave Thomas, David Heinemeier Hansson

It is a strong textual content, however it should be instructed that an Agile improvement particular ebook be learn, both previously or at the same time, whereas evolving the data imparted in those pages. "The artwork of Agile improvement" via James Shore is an efficient praise to this examining. Agile in fact, doesn't in simple terms follow to Ruby and Rails, yet Ruby and Rails are uniquely shaped to advertise Agile suggestions. earlier Rails books don't light up this connection so good as this one does, if in any respect. As such, it may be extra hugely prompt to profit rails through this ebook because it exposes this connection through-out. As a context delicate framework, rails might be discovered to the measure of revealing simply that a lot, or ... one may the right way to use rails in an totally iterative and collaborative improvement atmosphere. That assertion may still make clear the import of this booklet. One may declare that there's a correct strategy to study Rails and good then too, the previous method. study it definitely the right manner, utilizing Agile improvement practices. One fast notes that Agile is not only a administration software, yet a programmer's improvement method. actually it transcends many improvement services, from product administration to trying out, ultimate unlock and persevered upkeep and help. Rails as a framework, is more advantageous by way of an realizing of ways it matches with Agile. This booklet is going miles towards making that transparent.

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Additional resources for Agile Web Development with Rails, Third Edition

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Erb suffix tells Rails to expand the content in the file using a system called ERb (for Embedded Ruby). erb file and outputs a transformed version. The output file is often HTML in Rails, but it can be anything. Normal content is passed through without being changed. However, content between <%= and %> is interpreted as Ruby code and executed. %> sequence. erb to contain the following. 8. Actually, there are three ways, but the third, rjs, is useful only for adding AJAX magic to already-displayed pages.

To add the action, we define a new method in the controller. 9 printing, January 7, 2009) 57 L INKING P AGES T OGETHER goodbye. Our controller now looks like the following. now end def goodbye end end Next we have to create a new template in the directory app/views/say. erb, because by default templates are named after their associated actions.

It was nice having you here.

Fire up our trusty browser again, but this time point to our new view using the URL http://localhost:3000/say/goodbye.

As it stands, our story illustrates convention over configuration, one of the fundamental parts of the philosophy of Rails. By providing convenient defaults and by applying certain conventions, Rails applications are typically written using little or no external configuration—things just knit themselves together in a natural way. 3 Linking Pages Together It’s a rare web application that has just one page. Let’s see how we can add another stunning example of web design to our Hello, World! application.

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