Rails 4.2.0: Array/Hash typecast

[shlima]

  attribute :product_bindings, :hash, default: proc { Hash.new }

Raises the error:

ERROR:  syntax error at or near "array"
LINE 1: SELECT 'array'::regtype::oid
               ^
CONTEXT:  invalid type name "array"

[kratob]

ActiveType does not do any type casting on arrays or hashes, so you can simply drop the type and use

attribute :product_bindings, default: proc { Hash.new }

I'll release a fix, so ActiveType just ignores such data types, instead of crashing.