How do you define an array field when using create in mongoid?

Question

I'm trying to create a seed file to populate my mongo database. The following syntax creates a nil value when I try to define the array field value. I'm using mongoid v3.0.9. What am I doing wrong?

These following examples do not work when I put them in the seed file:

User.create(name:'name', test_array_field:'[123,123]')
User.create(name:'name', test_array_field:[123,123])
User.create(name:'name', test_array_field:[123,123].to_a)

I've defined the field in my class like so:

field :test_array_field, type: Array

Answer 1

Your second syntax works for me.

class User
  field :roles, type: Array, default: []
end

u = User.create roles: ['superadmin']
u.new_record? # => false
u.roles # => ["superadmin"]