Convert JSON to JSONB

conver_json_to_jsonb_migration.rb

# frozen_string_literal: true
class ConvertJsonFieldsToJsonB < ActiveRecord::Migration
  def change
    reversible do |dir|
      dir.up do
        migrate_json_to_jsonb :table, :attribute
      end
      dir.down do
        migrate_jsonb_to_json :table, :attribute
      end
    end
  end

  def migrate_json_to_jsonb(table, attribute)
    change_column table, attribute, "jsonb USING #{attribute}::JSONB", default: {}, null: false
  end

  def migrate_jsonb_to_json(table, attribute)
    change_column table, attribute, "json USING #{attribute}::JSON'", default: {}, null: false
  end
end