ActiveRecord transactions() ability to set isolation level

[vercotux]

This is a feature request to add the ability to select the transaction isolation level inside the transactions() method. Currently only the default isolation level is possible when specifying transactions in this manner.

Note: While it is theoretically possible to change the isolation level after the transaction has already begun (for example in beforeSave()), not all DBMS allow this.

[samdark]

Won't be implemented in 2.0.

[vercotux]

@samdark Why close it though? It's still very much an issue.

[samdark]

Because it makes no sense to keep it open if 2.0 is feature/enhancement frozen.

[vercotux]

Sure, for 2.0, but what about 3.0? You're still using the same logic in yiisoft/active-record, so why not move the issue instead of just closing it?

[samdark]

Ah, right :)