Activerecord name starts with

active_record_initializers.rb

# initializers/active_record_initializers.rb
class ActiveRecord::Base
  # do not accept a column_name from the outside without sanitizing it
  # as this can be prone to sql injection
  def self.starts_with(column_name, prefix)
    where("lower(#{column_name}) like ?", "#{prefix.downcase}%")
  end
end

# User.starts_with('name', 'ab').limit(1)

Overriding a module method from a gem in Rails
https://stackoverflow.com/questions/580314/overriding-a-module-method-from-a-gem-in-rails