adjusting characteg length with gorm

Hello everyone,
I'd like to ask if anyone tried adjusting character length on a db column. I have a situation where a string input could be as long as combined lengths of all strings in a static array, and all needs to fit into one field. I know this doesn't sound that good, but is it at all possible to increase, via gorm, the character length of the db column on the fly?

No, it is not. For good reason. Database structure modifications shouldn't occur that way. A DBA would have your head.