module ActiveRecord::Precountable
Public Instance Methods
precounts(*association_names)
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# File lib/active_record/precountable.rb, line 6 def precounts(*association_names) association_names.each do |association_name| var_name = "#{association_name}_count" instance_var_name = "@#{var_name}" attr_writer(var_name) define_method(var_name) do count = instance_variable_get(instance_var_name) raise NotPrecountedError.new("`#{association_name}' not precounted") unless count count end end end