Option to use `public_send` instead of `write_attribute` in AR Persistence layer?

[lewisf]

Is your feature request related to a problem? Please describe.

AASM's ActiveRecord persistence uses write_attribute to persist. However, this doesn't work well with attributes that are not backed by exactly a single column. I want to use AASM with it's status attribute persisted as one of many attributes in a json column.

Describe the solution you'd like

It'd be nice to be able to support any attribute that is writable via public_send("#{atribbute_name}=", ?) so we can use attributes via:

• store_accessor: https://api.rubyonrails.org/classes/ActiveRecord/Store.html
• store_model: https://github.com/DmitryTsepelev/store_model

or any other methods that provide some form of "alternative persistence" to an ActiveRecord table wherein the attribute is not backed by a single column

Describe alternatives you've considered

    # [override] Overriding this so that AASM can work with
    # non-column based attributes
    def write_attribute(key, value)
      if key.to_sym == ':json_status`
        public_send("json_status=", value)
      else
        super(key, value)
      end
    end