[9.x] add method performCommit

[rez1dent3]

Hello.

I proposed an additional event (committing #44608) in laravel, but the PR was closed. Maybe then we can at least move the commit logic into one protected method? It will greatly simplify the application logic for me.

Thanks

[taylorotwell]

What problem are you trying to solve in your application?

[rez1dent3]

I am developing a package for virtual wallets. For the duration of the transaction, wallets are blocked. In order not to make unnecessary requests to the database to update the balance, I need to update wallets before commit (those inside the transaction).

Here is the pseudocode:

DB::beginTransaction();
$wallet1->deposit(100);
$wallet2->deposit(100);
$wallet5->deposit(100);
DB::commit();

Not to do after each insert query update I need access to commit. Then the code will look like this:

start transaction;
insert into trans (wallet_id, amount, ...) values (1, 100, ...); // q1
insert into trans (wallet_id, amount, ...) values (2, 100, ...); // q2
insert into trans (wallet_id, amount, ...) values (5, 100, ...); // q3

... update case when ... then...
 commit;

My case is quite narrow, but I really need to have access before the commit operation.

[rez1dent3]

The performCommit method implemented is an analogue of the performRollBack method, which has been in the framework for a long time.

[rez1dent3]

Specifically, at the moment, I want to abandon the "own" implementation of transactions (which internally uses the standard one) in favor of the standard ones. With this change, I can add full support for laravel nova, but now there are only problems. bavix/laravel-wallet#455 bavix/laravel-wallet#569

[taylorotwell]

Reopening other PR.