mysql - Rails 4 - Best way to perform an advanced search -

in custom advanced search form, best way perform query filter results?

class userscontroller < applicationcontroller    def index     @users = user.all   end  end 

in many case have different types of data, example:

name string, surname string, age integer

in specific case, have form filters user can or can not fill. how can dynamic query?

in controller this:

class userscontroller < applicationcontroller    def index     @users = user.search params[:filter]   end  end 

then in user model do:

class user < activerecord::base   def self.search(options = {})     users = user.all     users = users.where(name: options[:name] ) if options[:name].present?     users = users.where(first_name: options[:first_name] ) if options[:first_name].present?     users = users.where(last_name: options[:last_name] ) if options[:last_name].present?     users = users.where(age: options[:age] ) if options[:age].present?     users   end end