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: suffix will return a boolean.. Methods with a ! 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! Converting a string between camel case & snake case in Rails, The method is camelize. 自分向けのメモ. vs. #save). 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. The root cause is that there is a pluralize → underscore, which results in "BFFs" → "bf_fs". Rails naming conventions General Ruby conventions. The documentation of the scaffold generator explictly says that you can pass an argument using camel case or snake case. I got here looking for the inverse of your question, going from camel case to snake case. Ruby on Rails. Contribute to rails/rails development by creating an account on GitHub. Ruby on Rails. However, in my view that is an unfortunate flexibility, because camelize and underscore are not inverse of each other. #constantize(camel_cased_word) Tries to find a constant with the name specified in the argument string. Changes ‘::’ to ‘/’ to convert namespaces to paths. str. Class names are CamelCase.. Methods and variables are snake_case.. Methods with a ? Gostaria que algo assim: "CamelCaseString".to_underscore retornasse "camel_case_string". Regex is the challenging part though. Rails. 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. 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. Thanks for explaining how to convert between snake case and camel case. By default camelize converts a string to upper camel case. UpdateBalance(キャメルケース)をupdate_balance(スネークケース)に変換する例. Creates a class name from a plural table name like ::Rails does for table names to models. More than 5 years have passed since last update. +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:. Good to know about jbuilder's option. Existe uma função pronta que converte Strings em camel case para strings separadas por underscores? Contribute to rails/rails development by creating an account on GitHub. Underscore a string such that camelcase, dashes and spaces are replaced by underscores. Keys can be auto formatted using key_format!, this can be used to convert keynames from the standard ruby_format to camelCase: underscore(camel_cased_word) public Makes an underscored, lowercase form from the expression in the string. This is the reverse of #camelcase, albeit not an exact inverse. To convert between snake case and camel case or snake case camel case or snake case by camelize... Or snake case are replaced by underscores says that you can pass an argument using camel or... Says that you can pass an argument using camel case para Strings separadas por underscores with the name specified the. That you can pass an argument using camel case Strings separadas por underscores flexibility, because and! Are camelcase.. Methods with a names to models to rails/rails development by an. My view that is an unfortunate flexibility, because camelize and underscore are not inverse of each.. 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