# Mevcut Kullanıcıyı Alma { #get-current-user }

Önceki bölümde güvenlik sistemi (dependency injection sistemine dayanır) *path operation function*'a `str` olarak bir `token` veriyordu:

{* ../../docs_src/security/tutorial001_an_py310.py hl[12] *}

Ancak bu hâlâ pek kullanışlı değil.

Bize mevcut kullanıcıyı verecek şekilde düzenleyelim.

## Bir kullanıcı modeli oluşturun { #create-a-user-model }

Önce bir Pydantic kullanıcı modeli oluşturalım.

	benchmarkSelectAll(b, 10*humanize.MiByte)
}

func benchmarkSingleCol(b *testing.B, count int) {
	benchmarkSelect(b, count, "select id from S3Object")
}

// BenchmarkSingleRow_100K - benchmark SELECT column function with 100k records.
func BenchmarkSingleCol_100K(b *testing.B) {
	benchmarkSingleCol(b, 1e5)
}

// BenchmarkSelectAll_1M - benchmark * function with 1m records.
func BenchmarkSingleCol_1M(b *testing.B) {

		statusCode: 400,
		cause:      err,
	}
}

func errColumnTooLong(err error) *s3Error {
	return &s3Error{
		code:       "ColumnTooLong",
		message:    "The length of a column in the result is greater than maxCharsPerColumn of 1 MB.",
		statusCode: 400,
		cause:      err,
	}
}

func errOverMaxColumn(err error) *s3Error {
	return &s3Error{
		code:       "OverMaxColumn",

	// Base reports the position base of the token.
	Base() *src.PosBase
	// SetBase sets the position base.
	SetBase(*src.PosBase)
	// Line reports the source line number of the token.
	Line() int
	// Col reports the source column number of the token.
	Col() int
	// Close does any teardown required.
	Close()
}

// A Token is a scan token plus its string value.
// A macro is stored as a sequence of Tokens with spaces stripped.

Parity blocks can not be higher than data blocks, so `STANDARD` storage class parity can not be higher than N/2. (N being total number of drives)

The default value for the `STANDARD` storage class depends on the number of volumes in the erasure set:

| Erasure Set Size | Default Parity (EC:N) |
|------------------|-----------------------|
| 5 or fewer       |                 EC:2  |
| 6-7              |                 EC:3  |

	type purge BatchJobExpirePurge
	var tmp purge
	err := val.Decode(&tmp)
	if err != nil {
		return err
	}

	*p = BatchJobExpirePurge(tmp)
	p.line, p.col = val.Line, val.Column
	return nil
}

// Validate returns nil if value is valid, ie > 0.
func (p BatchJobExpirePurge) Validate() error {
	if p.RetainVersions < 0 {
		return BatchJobYamlErr{
			line: p.line,
			col:  p.col,

    @Override
    public String toStringWithRelation() { // #pending
        return toString();
    }

    @Override
    public String buildDisplayString(String name, boolean column, boolean relation) { // #pending
        return toString();
    }

    // ===================================================================================

    @Override
    public String toStringWithRelation() { // #pending
        return toString();
    }

    @Override
    public String buildDisplayString(String name, boolean column, boolean relation) { // #pending
        return toString();
    }

    // ===================================================================================

	NewValuePool           FieldNewValuePool

	// In some db (e.g. MySQL), Unique and UniqueIndex are indistinguishable.
	// When a column has a (not Mul) UniqueIndex, Migrator always reports its gorm.ColumnType is Unique.
	// It causes field unnecessarily migration.
	// Therefore, we need to record the UniqueIndex on this column (exclude Mul UniqueIndex) for MigrateColumnUnique.
	UniqueIndex string
}

func (field *Field) BindName() string {

    @Override
    public String toStringWithRelation() { // #pending
        return toString();
    }

    @Override
    public String buildDisplayString(String name, boolean column, boolean relation) { // #pending
        return toString();
    }

    // ===================================================================================