Underscore: sortBy() based on multiple attributes

Question

I am trying to sort an array with objects based on multiple attributes. I.e if the first attribute is the same between two objects a second attribute should be used to comap

Answer 1

You could concatenate the properties you want to sort by in the iterator:

return [patient[0].roomNumber,patient[0].name].join('|');

or something equivalent.

NOTE: Since you are converting the numeric attribute roomNumber to a string, you would have to do something if you had room numbers > 10. Otherwise 11 will come before 2. You can pad with leading zeroes to solve the problem, i.e. 01 instead of 1.