Rails - Single Table Inheritance

Single Table Inheritance(STI) allows you to have one signle SQL table but you can manage different type of object on this table.

For example, in Post table, we have 2 type of post: draft and publish.

In Rails, you can use this code:

class Post
end

class Draft < Post

end

class Publish < Post

end

Rails will generates automatic a field named “type” to save the class name.