Fix some typos and update db transaction demo in backend guideline (#21322)

Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
This commit is contained in:
rj1 2022-10-07 13:12:19 -05:00 committed by GitHub
parent c08e42c47e
commit 56aabf3e8d
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@ -67,22 +67,18 @@ Some actions should allow for rollback when database record insertion/update/del
So services must be allowed to create a database transaction. Here is some example,
```go
// servcies/repository/repo.go
func CreateXXXX() error {\
ctx, committer, err := db.TxContext()
if err != nil {
return err
}
defer committer.Close()
// do something, if return err, it will rollback automatically when `committer.Close()` is invoked.
if err := issues.UpdateIssue(ctx, repoID); err != nil {
// ...
}
// ......
return committer.Commit()
// services/repository/repository.go
func CreateXXXX() error {
return db.WithTx(func(ctx context.Context) error {
e := db.GetEngine(ctx)
// do something, if err is returned, it will rollback automatically
if err := issues.UpdateIssue(ctx, repoID); err != nil {
// ...
return err
}
// ...
return nil
})
}
```
@ -94,14 +90,14 @@ If the function will be used in the transaction, just let `context.Context` as t
func UpdateIssue(ctx context.Context, repoID int64) error {
e := db.GetEngine(ctx)
// ......
// ...
}
```
### Package Name
For the top level package, use a plural as package name, i.e. `services`, `models`, for sub packages, use singular,
i.e. `servcies/user`, `models/repository`.
i.e. `services/user`, `models/repository`.
### Import Alias