unclead
How to work with ActiveRecord models?
How to automatically save data to database and read it for widget using ActiveRecord models? No information or examples provided, only examples with \yii\base\Model. Maybe, some Trait should be created, to convert data to JSON and back to PHP array? It is not good idea to edit controllers. I think data conversion should be done by this extension automatically, because without this using of extension is not convenient.
Should I use the JSON column database type for fields? Also, I noticed, that 'sortable' has some strange behavior when using JSON database column type: it doesn't change row indexes after sorting, so after saving the result has no effect (the order is based on row numeric "keys", they don't changing after sorting).
did you read the article https://github.com/unclead/yii2-multiple-input/wiki/Basic-scenario-of-usage ? I don't agree that the widget has to be responsible for server-side processing, because it doesn't know anything about your business logic.
Originally it was created only to provide a simple way to manage similar data such as email/phones without the necessity to reinvent the wheel each time. But the widget has evolved a lot since its first release and it contains many features now.
If you want to implement a trait or a yii behavior to simplify processing data on server-side, PR is always welcome
And what about JSON type in database column? Sortable not working in this case, because of fixed array indexes. JSON type is preferable for such data.
You should mention in description that this component doesn't support sorting for JSON fields. There is no solution for now.