Custom retrieve resource

Sometimes, your logic to retrieve user is too complex. It is not simple User.find_by(email: identifier).

# frozen_string_literal: true

Rails.application.config.to_prepare do
  AuthRails.configure do |config|
    config.resource_class = User
    config.identifier_name = :username
    config.dig_params = ->(params) { params[:identifier] }

    config.retrieve_resource = lambda { |identifier|
      User.where(email: identifier)
          .or(User.where(username: identifier))
          .first
    }
  end
end

config.identifier_name

This will be used to set to sub of JWT's payload.

config.dig_params

To extract identifier for the retrieve_resource config.

config.retrieve_resource

This is where you define how to get your resource to do the sign in.