devise

https://github.com/plataformatec/devise

Ruby

Flexible authentication solution for Rails with Warden.

DeviseController#set_flash_message

Sets the flash message with :key, using I18n. By default you are able
to set up your messages using specific resource scope, and if no message is
found we look to the default scope. Set the "now" options key to a true
value to populate the flash.now hash in lieu of the default flash hash (so
the flash message will be available to the current action instead of the
next action).
Example (i18n locale file):

  en:
    devise:
      passwords:
        #default_scope_messages - only if resource_scope is not found
        user:
          #resource_scope_messages

Please refer to README or en.yml locale file to check what messages are
available.

Source | Google | Stack overflow

Edit

git clone [email protected]:plataformatec/devise.git

cd devise

open app/controllers/devise_controller.rb

Contribute

# Make a new branch

git checkout -b -your-name--update-docs-DeviseController-set_flash_message-for-pr

# Commit to git

git add app/controllers/devise_controller.rbgit commit -m "better docs for DeviseController#set_flash_message"

# Open pull request

gem install hub # on a mac you can `brew install hub`

hub fork

git push <your name> -your-name--update-docs-DeviseController-set_flash_message-for-pr

hub pull-request

# Celebrate!