Mastering ActiveRecord and Arel
Mastering ActiveRecord and ARel Dan Shultz @danshultz • das0118@gmail.com When I started using rails... Finders Beer.find_by_name_and_abv("Two Hearted Ale", 7.0) Beer.find_all_by_abv(7.0) Conditions Hash Beer.find(:all, conditions: ["abv < ?", 7]) String Conditions Beer.where("abv between ? and ?", 5.5, 7) Beer.where(abv: 5.5..7) Then I joined a large team... We did this... record = self.handles.f
The definitive guide to Arel, the SQL manager for Ruby - Jiri Pospisil
Arel is the kind of library that many of us Rails developers use on a daily basis and might not even know about it. So what's this library whose name only pops up when everything else fails all about? It's all about providing frameworks with a way of building and representing SQL queries. It's not the kind of library you would typically want to use directly (although you could as shown in a minute
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