Question

I want to execute the following:

case 1:

x = Group.all[0].people
x.class
=> Array
x.order

fine.
🙂

case 2:

y = Person.all
y.class
=> Array
y.order
=> NoMethodError: undefined method `order' for #<Array:0x718c278>

🙁

Both x and y contain the same type of item – bunch of Person models.
Why can’t ruby order the array?

Thanks in Advance

Answer 1

Because in the Rails 3 the method all(GitHub) returns an array. It can’t be ordered with order method.

Although you may use the sort method do to the ordering.

The people returns an ActiveRecord::Relation object that can then be further scoped.

Fortunatelly the ActiveRecord::Relation have the to_a method that will return an array that you may sort.