How to make a migration in Laravel 5.5 that change the datatype of a String to JSON? My column has image links and I want to change it to JSON to store more links.

I thought this was the best way?

* change the string value of the column so it corresponds to JSON datatype
* change the datatype of the column to JSON

I'm able to do the first step in mysql by:

```
UPDATE db.vendor_horses SET image= CONCAT('{"images":["', image, '"]}');

```

Thanks!