ruby on rails - Is there any method for distinguishing a record of an association? -

ruby on rails - Is there any method for distinguishing a record of an association? -

i'm looking method, rails, distinguishing 1 record (ex: @user) of association(ex: @users).

here i'm trying :

def my_method(var) if var == #record # elsif var == #association #do else end end

var can record or association @user, @users, @page, @pages, ...

i tried solve .class or .each method without success ...

a record instance of activerecord base, association enumerable collection.

you can explicitly check type

def my_method(var) if var.is_a? activerecord::base # single instance else # collection, association end end

or rely on ruby duck-tying.

def my_method(var) if var.respond_to? :each # collection, association else # single instance end end

duck-typing preferred approach.

ruby-on-rails class activerecord ruby-on-rails-4 comparison