Sorting an array of objects in Ruby by object attribute?

Question

I have an array of objects in Ruby on Rails. I want to sort the array by an attribute of the object. Is it possible?

Answer 1

Ascending order :

objects_array.sort! { |a, b|  a.attribute <=> b.attribute }

or

objects_array.sort_by{ |obj| obj.attribute }

Descending order :

objects_array.sort! { |a, b|  b.attribute <=> a.attribute }

or

objects_array.sort_by{ |obj| obj.attribute }.reverse

Answer 2

@model_name.sort! { |a,b| a.attribute <=> b.attribute }

Answer 3

Yes, using Array#sort! this is easy.

myarray.sort! { |a, b|  a.attribute <=> b.attribute }