Ruby On Rails Group By

Product select category group category this will query the database as follows.

Ruby on rails group by. Surprisingly you might not realize that orderedhash is preserving order since it delegates its inspect method to hash. If for whatever reason you spot something to fix but cannot patch it yourself please open an issue. If you re running ruby 1 9 it is simply an alias for hash. Group by public groups the collection by result of the block.

Returns a hash where the keys are the evaluated result from the block and the values are arrays of elements in the collection that correspond to the key. How to install rails create a new rails application and connect your application to a database. The general layout of a rails application. Jquery is fully supported as a replacement for prototype and is the default javascript library in rails 3 1 reflecting an industry wide move towards jquery.

We have a product model and we want to group them by their category. The basic principles of mvc model view controller and restful design. Getting started with railsthis guide covers getting up and running with ruby on rails after reading this guide you will know. And last but not least any kind of discussion regarding ruby on rails documentation is very welcome on the rubyonrails docs mailing list.