From the course: Ruby on Rails 6: Controllers and Views

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Number helpers

Number helpers - Ruby on Rails Tutorial

From the course: Ruby on Rails 6: Controllers and Views

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Number helpers

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- [Instructor] Ruby on Rails includes many methods that are designed to help you to format numbers. There's number_to_currency, number_to_percentage, number_with_precision, which is also aliased as number_to_rounded, number_with_delimiter, which is aliased as number_to_delimited, number_to_human, number_to_human_size, and number_to_phone. All of these helper methods take a number as their first argument and then a hash of options as their second argument. But you only need to provide that hash if you want to override the Rails defaults. For most of those, they take a couple of standard options. Delimiter, which delimits the thousands and the default is a comma. Separator, which is the decimal separator and its default is the period. And precision, the number of decimal places to show. It varies a little bit between the methods but it's typically two or three. Let's take a look at the first one, number_to_currency. If you…

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