How to add new attribute to ActiveRecord

Question

After getting all values from model, I want to add another custom attribute to the ActiveRecord class (this attribute is not a column in db) so that I could use it in view, but

Answer 1

If you want this only for your views and do not have any other purpose then you need not to add attr_accessor

@test.all.select('tests.*, "added string" as newattr')

here you are adding newattr attribute for query output of ActiveRecord with a value 'added string'