Tutorial by Examples

If you have an attribute that needs to be saved and retrieved to database as an object, then specify the name of that attribute using the serialize method and it will be handled automatically. The attribute must be declared as a text field. In the model you must declare the type of the field (Hash...

In your migration class Users < ActiveRecord::Migration[5.0] def change create_table :users do |t| ... t.text :preference t.text :tag ... t.timestamps end end end In your model class User < ActiveRecord::Base serialize :preferences,...