More self explanatory locking code and doc improvement

[dogenkigen]

Describe the feature

There is a section in documentation describing locking https://gorm.io/docs/advanced_query.html#Locking-FOR-UPDATE. The section doesn't provide that much explanation on locking so it could be expanded. I created a PR which could solve the issue https://github.com/go-gorm/gorm.io/pull/725

Another thing from API perspective it would be easier to use if the library has predefined values for locking strength and locking options. To solve this problem I created another PR. https://github.com/go-gorm/gorm/pull/6719

Please let me know what do you think about suggested changes.

Motivation

Make locking API easier to understand.

Related Issues