Advanced Rails Recipes by Mike Clark

By Mike Clark

From the writer of the imperative Rails Recipes , and with assistance from a brand new grasp Rails chef within the kitchen, listed below are seventy two new how one can kick your Ruby on Rails apps up a notch. extra Rails Recipes is a suite of functional recipes for dressing up your net software with little fuss. you are going to find out how the professionals have solved the cruel difficulties utilizing the main state of the art Rails thoughts so that you can convey your lovely internet app faster and more uncomplicated.

builders by way of the millions are coming to Rails-the advantages are transparent, either to members and their corporations.

yet how can a developer be anticipated to write down idiomatic, powerful Rails code while the know-how is so new? the answer's to paintings along masters, humans who have been there from the beginning (and who've the scars to turn out it). And, what larger approach to examine from their event than to examine their code and browse their reasons of why it really is written that manner? or even higher think if that code should be lifted and put correct into your individual software.

this is often greater than simply cut-and-paste: the recipe layout ability you will comprehend the code, and be ready to adjust it to fit your wishes. And the checklist of recipes is so large that you are absolute to locate guidance and strategies the place you are going to say "Oh! that is how they do that," or, "I did not be aware of you'll do this in Rails."

With extra Rails Recipes , a following as much as the preferred unique Rails Recipes , you could cook dinner up a storm.

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You’ve done this before, you know, back in the old days. But this is a new day. How do you authenticate users in a RESTful way via the browser and an Active Resource client? Solution Let’s assume we already have a User model. authenticate(login, password) Given that, we need a form to accept the login and password. We’ll also need a couple controller actions to pop the form and authenticate the user. Now, we could slap those actions into any controller, but REST is always asking the question, what’s the resource?

In 2005 he started working professionally with Ruby on Rails and is now best known for his work on Railscasts, the free Ruby on Rails screencast series. Problem Most of the form code you see handles one model at a time. That’s not always practical. Sometimes you need to create and/or update two (or more) models in a single form, where there is a one-to-many association between them. Solution Let’s say we’re keeping track of tasks we need to do on projects. When we create or update a project, we’d like to add, remove, and update its tasks in a single form.

And optionally checking the errors collection. valid? valid? errors[:ssn] end end Encapsulating validations like this leads to far more readable model classes, not to mention that warm feeling you get when you realize your code is DRY. net/) Thanks to Rick for technical help with this recipe. Problem Scalability is one of those fighting words. ) On a practical note, you have a number of knobs to turn and levers to pull to help your application scale. One naive approach to improving scalability is to throw more Mongrel processes into the mix.

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