1. Beautiful Global Models
- Atul Bhosale

5. Why GlobalID?
➢ Single identifier to reference different classes
of objects.(App wide URI)
➢ Job scheduling
➢ Dropdown list of options

6. What is Globalid?
Unique ID across all Model classes
Not same as Primary key
Consists:
• Application name
• Model Class Identifier

7. How to use it?

8. 2.1.5 :004 > person = Individual.find(1)
=> #<Individual id: 1, name: "Mark", created_at: "2015-05-09 03:51:50", updated_at: "2015-05-09
03:51:50">
2.1.5 :005 > company = Company.find(1)
=> #<Company id: 1, name: "Facebook", created_at: "2015-05-09 03:51:49", updated_at: "2015-05-09
03:51:49">
2.1.5 :006 > person.id == company.id
=> true
2.1.5 :007 > person.to_global_id == company.to_global_id
=> false
2.1.5 :011 > person.to_global_id
=> #<GlobalID:0x0000000688a2b0 @uri=#<URI::GID:0x0000000688a828 URL:gid://globalid-
polymorphic/Individual/1>>
2.1.5 :012 > company.to_global_id
=> #<GlobalID:0x00000006878d80 @uri=#<URI::GID:0x000000068791b8 URL:gid://globalid-
polymorphic/Company/1>>

9. At Work?

10. Globalid in ActiveJob
● Whitelist Arguments
o [ NilClass, Fixnum, Float, String, TrueClass,
FalseClass, Bignum ]
● serialize_argument
o argument.to_global_id.to_s
● deserialize_argument
o locate method

12. Internally
2.1.5 :008 > URI("http://foo/bar/baz").host #=> "foo"
=> "foo"
2.1.5 :009 > URI("http://foo/bar/baz").path #=> "/bar/baz"
=> "/bar/baz"
2.1.5 :010 > URI("http://foo/bar/baz").scheme #=> "http"
=> "http"

13. Thank you