Agile Web Development with Rails, Third Edition - download pdf or read online

By Sam Ruby, Dave Thomas, David Heinemeier Hansson

ISBN-10: 1934356166

ISBN-13: 9781934356166

It is a sturdy textual content, however it could be urged that an Agile improvement particular e-book be learn, both previously or at the same time, whereas evolving the data imparted in those pages. "The artwork of Agile improvement" through James Shore is an efficient praise to this analyzing. Agile in fact, doesn't in basic terms follow to Ruby and Rails, yet Ruby and Rails are uniquely shaped to advertise Agile options. past Rails books don't remove darkness from this connection so good as this one does, if in any respect. As such, it may be extra hugely suggested to benefit rails through this ebook because it exposes this connection through-out. As a context delicate framework, rails could be realized to the measure of disclosing simply that a lot, or ... one may the way to use rails in an totally iterative and collaborative improvement surroundings. That assertion should still make clear the import of this ebook. One may declare that there's a correct solution to study Rails and good then too, the outdated means. study it the precise approach, utilizing Agile improvement practices. One fast notes that Agile isn't just a administration instrument, yet a programmer's improvement technique. in truth it transcends many improvement features, from product administration to trying out, ultimate free up and persisted upkeep and aid. Rails as a framework, is better via an knowing of ways it matches with Agile. This ebook is going miles towards making that transparent.

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Extra resources for Agile Web Development with Rails, Third Edition

Example text

Erb files between <% and %> (without an equals sign) is interpreted as Ruby code that is executed with no substitution back into the output. Interestingly, this kind of processing can be intermixed with non-Ruby code. erb.
<% end %> Merry Christmas! This will generate the following HTML.
Merry Christmas! Note how the text in the file within the Ruby loop is sent to the output stream once for each iteration of the loop. But there’s something strange going on here, too. Where did all the blank lines come from?

We already know how to add a new view and action to a Rails application. 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.

If you installed your own copy of Ruby, bypassing the built-in one, it is important to remember to have this version of Ruby first in your path when building and installing the database driver. You can use the command which ruby to make sure you’re not running Ruby from /usr/bin. The following table lists the available database adapters and gives links to their respective home pages. org/projects/sqlite-ruby There is a pure-Ruby version of the Postgres adapter available. org/projects/ruby-dbi. MySQL and SQLite adapters are also available for download as RubyGems (mysql and sqlite3-ruby, respectively).

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

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