Here are all the Rails 4 (ActiveRecord migration) datatypes:
:binary:boolean:date:datetime:decimal:float:integer:bigint:primary_key:references:string:text:time:timestamp
Source: http://api.rubyonrails.org/classes/ActiveRecord/ConnectionAdapters/SchemaStatements.html#method-i-add_column
These are the same as with Rails 3.
If you use PostgreSQL, you can also take advantage of these:
:hstore:json:jsonb:array:cidr_address:ip_address:mac_address
They are stored as strings if you run your app with a not-PostgreSQL database.
More PostgreSQL data types
- Rails 4
- Rails 5
- Rails 6
- Rails 7