npm

rails-completion

Bash completion for Rails commands and generators

brewmacoslinux
Try with needOr install directly
Source

About

Bash completion for Rails

Commands

rails-completion

Examples

Enable Rails command completion in bash shell$ source $(brew --prefix)/etc/bash_completion.d/rails
Auto-complete Rails generator names$ rails generate <TAB>
Auto-complete Rails task names with rake$ rails <TAB>