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

in case you need sorting by two attributes, where first one is more important then second (means taking in account second arguments only if first arguments are equal), then you may do like this

myarray.sort{ |a,b| (a.attr1 == b.attr1) ? a.attr2 <=> b.attr2 : a.attr1 <=> b.attr1 }

or in case of array of arrays

myarray.sort{ |a,b| (a[0] == b[0]) ? a[1] <=> b[1] : a[0] <=> b[0] }