Creates a class name from a plural table name like ::Rails does for table names to models. Existe uma função pronta que converte Strings em camel case para strings separadas por underscores? underscore(camel_cased_word) public Makes an underscored, lowercase form from the expression in the string. Thanks for explaining how to convert between snake case and camel case. +1 for your config name suggestion, but in case that doesn't go down well with rails core, I'm quoting the jbuilder docs on camelize as it may be helpful when coming up with a config name:. 自分向けのメモ. Use underscore for that (not decamelize): AppUser.name.underscore # => "app_user" or, if you already have a camel case string: "AppUser".underscore # => "app_user" or, if you want to get the table name, which is probably why you’d want the snake case: Class names are CamelCase.. Methods and variables are snake_case.. Methods with a ? Ruby on Rails. Keys can be auto formatted using key_format!, this can be used to convert keynames from the standard ruby_format to camelCase: vs. #save). Good to know about jbuilder's option. #constantize(camel_cased_word) Tries to find a constant with the name specified in the argument string. Changes ‘::’ to ‘/’ to convert namespaces to paths. suffix will return a boolean.. Methods with a ! Underscore a string such that camelcase, dashes and spaces are replaced by underscores. I got here looking for the inverse of your question, going from camel case to snake case. The Rails core team has stated patches for the inflections library will not be accepted in order to avoid breaking legacy applications which may be relying on errant inflections. Converting a string between camel case & snake case in Rails, The method is camelize. By default camelize converts a string to upper camel case. Rails. UpdateBalance(キャメルケース）をupdate_balance（スネークケース）に変換する例. Rails naming conventions General Ruby conventions. However, in my view that is an unfortunate flexibility, because camelize and underscore are not inverse of each other. Contribute to rails/rails development by creating an account on GitHub. The root cause is that there is a pluralize → underscore, which results in "BFFs" → "bf_fs". There is a method provided in rails to convert a string to the camel case.the method is camelize.by default camelize converts a string to upper camel case. suffix mean one of two things: either the method operates destructively in some fashion, or it will raise and exception instead of failing (such as Rails models' #save! Regex is the challenging part though. More than 5 years have passed since last update. str. Ruby on Rails. Gostaria que algo assim: "CamelCaseString".to_underscore retornasse "camel_case_string". If you are not doing this programmatically, you can use Case Converter to convert a string to any case possible such as camelCase, CONSTANT_CASE, PascalCase, snake_case, and more. 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