Download Advanced Rails Recipes by Mike Clark PDF

By Mike Clark

From the writer of the fundamental Rails Recipes , and with the aid of 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 useful recipes for dressing up your internet program with little fuss. you are going to learn the way the professionals have solved the cruel difficulties utilizing the main state-of-the-art Rails strategies so that you can carry your gorgeous net app speedier and more uncomplicated.

builders through the millions are coming to Rails-the merits are transparent, either to participants and their corporations.

yet how can a developer be anticipated to jot 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 solution to examine from their adventure than to examine their code and skim their motives of why it is written that means? or even higher think if that code will be lifted and positioned correct into your personal program.

this can be larger than simply cut-and-paste: the recipe structure potential you will comprehend the code, and be ready to adjust it to fit your wishes. And the record of recipes is so large that you are sure to locate tips and methods the place you will say "Oh! that is how they do that," or, "I did not recognize you may do this in Rails."

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

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Js { head :unprocessable_entity } end end end With a JavaScript request, all the browser needs to know is that the request was successful so it can turn off the spinning image. If the update succeeds, we use head :ok to return an HTTP 200 response. If the update fails, we use head :unprocessable_entity to return an HTTP 422 response. This works well when you’re toggling attributes with Ajax, because you don’t care about the response. The fixed attribute in this case isn’t bound by any validation rules, so updating it isn’t likely to fail.

This isn’t a big deal when we’re talking to a local app in development mode. However, it’s a huge deal if we’re talking to our production app. The login and password will travel across the ’net in plain-text form, and any hacker worth his salt can decode this over lunch. So, don’t forget to use the HTTPS protocol in production! While we’re talking about security, let’s go ahead and use the HighLine2 library to prompt for a login and password, rather than hard-coding them in our client. map(&:name) 2.

In this case, log_info is a public method of a heavily used API. It’s unlikely that this method would change significantly, but it’s always possible. 59 11. S IPHON O FF SQL Q UERIES Also See Two plug-ins in particular use a similar technique to give you insight into database activity: • The query_trace plug-in1 dumps the stack trace of where your application is at when a SQL statement is run. It’s a great plug-in for pinpointing the exact location of a problematic query. • The query_analyzer plug-in2 prints out the MySQL execution plan in your logs (using the MySQL EXPLAIN statement).

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