///

Ahora, obtén los datos del usuario desde la base de datos (falsa), usando el `username` del campo del form.

Si no existe tal usuario, devolvemos un error diciendo "Incorrect username or password".

Para el error, usamos la excepción `HTTPException`:

{* ../../docs_src/security/tutorial003_an_py310.py hl[3,79:81] *}

### Revisa el password { #check-the-password }

                            "content": {"application/json": {"schema": {}}},
                        },
                        "422": {
                            "description": "Validation Error",
                            "content": {
                                "application/json": {
                                    "schema": {

import (
	"fmt"
	"reflect"
	"strings"

	"gorm.io/gorm"
	"gorm.io/gorm/clause"
	"gorm.io/gorm/schema"
	"gorm.io/gorm/utils"
)

func Query(db *gorm.DB) {
	if db.Error == nil {
		BuildQuerySQL(db)

		if !db.DryRun && db.Error == nil {
			rows, err := db.Statement.ConnPool.QueryContext(db.Statement.Context, db.Statement.SQL.String(), db.Statement.Vars...)
			if err != nil {
				db.AddError(err)
				return
			}

	Index      []byte            `json:"index,omitempty" msg:"i,omitempty"`
	Checksums  map[string]string `json:"crc,omitempty" msg:"crc,omitempty"`   // Content Checksums
	Error      string            `json:"error,omitempty" msg:"err,omitempty"` // only set while reading part meta from drive.
}

// ChecksumInfo - carries checksums of individual scattered parts per disk.
type ChecksumInfo struct {
	PartNumber int

        logger.info(getCurrentIndent() + ConsoleIcon.SUCCESS.getIcon(terminal) + " " + message);
    }

    /**
     * Logs an error with an X icon.
     */
    public void failure(String message) {
        logger.error(getCurrentIndent() + ConsoleIcon.ERROR.getIcon(terminal) + " " + message);
    }

    /**
     * Logs a warning with a warning icon.
     */
    public void warning(String message) {

// storageClass structure.
func (sc *StorageClass) UnmarshalText(b []byte) error {
	scStr := string(b)
	if scStr == "" {
		return nil
	}
	s, err := parseStorageClass(scStr)
	if err != nil {
		return err
	}
	sc.Parity = s.Parity
	return nil
}

// MarshalText - marshals storage class string.
func (sc *StorageClass) MarshalText() ([]byte, error) {
	if sc.Parity != 0 {

                    }
                } catch (Exception e) {
                    log.error("Failed to load handle file: " + handleFile, e);
                    try {
                        Files.deleteIfExists(handleFile);
                    } catch (IOException deleteEx) {
                        log.error("Failed to delete corrupted handle file: " + handleFile, deleteEx);
                    }
                }

			t.Fatalf("Unexpected error expecting %s", syscall.ENOTEMPTY)
		}
	} else {
		pathErr = &os.PathError{Err: syscall.Errno(0x91)}
		ok = isSysErrNotEmpty(pathErr)
		if !ok {
			t.Fatal("Unexpected error expecting 0x91")
		}
	}
	if runtime.GOOS == globalWindowsOSName {
		pathErr = &os.PathError{Err: syscall.Errno(0x03)}
		ok = isSysErrPathNotFound(pathErr)
		if !ok {
			t.Fatal("Unexpected error expecting 0x03")
		}
	}

			if err != nil {
				t.Log(oi)
				t.Fatalf("%s : %s", instanceType, err.Error())
			}
		}

		oi, err := obj.DeleteObject(context.Background(), testCase.bucketName, testCase.pathToDelete, ObjectOptions{})
		if err != nil && !isErrObjectNotFound(err) {
			t.Log(oi)
			t.Errorf("Test %d: %s:  Expected to pass, but failed with: <ERROR> %s", i+1, instanceType, err)
			continue
		}

	cert, err := tls.X509KeyPair(certPEMBlock, keyPEMBlock)
	if err != nil {
		return tls.Certificate{}, ErrTLSUnexpectedData(nil).Msg(err.Error())
	}
	return cert, nil
}

// EnsureCertAndKey checks if both client certificate and key paths are provided
func EnsureCertAndKey(clientCert, clientKey string) error {
	if (clientCert != "" && clientKey == "") ||
		(clientCert == "" && clientKey != "") {