<img src="/img/tutorial/security/image12.png">

## Den Benutzernamen überprüfen { #check-the-username }

Hier ist ein vollständigeres Beispiel.

Verwenden Sie eine Abhängigkeit, um zu überprüfen, ob Benutzername und Passwort korrekt sind.

	user := *GetUser("bench", Config{})

	for x := 0; x < b.N; x++ {
		user.ID = 0
		DB.Create(&user)
	}
}

func BenchmarkFind(b *testing.B) {
	user := *GetUser("find", Config{})
	DB.Create(&user)

	for x := 0; x < b.N; x++ {
		DB.Find(&User{}, "id = ?", user.ID)
	}
}

func BenchmarkScan(b *testing.B) {
	user := *GetUser("scan", Config{})
	DB.Create(&user)

	var u User
	b.ResetTimer()

	}

	sql = DB.Session(&gorm.Session{DryRun: true}).Table("user u").Select("name").Find(&User{}).Statement.SQL.String()
	if !regexp.MustCompile(`SELECT .name. FROM user u WHERE .u.\..deleted_at. IS NULL`).MatchString(sql) {
		t.Errorf("Table with escape character, got %v", sql)
	}

	if DB.First(&User{}, "name = ?", user.Name).Error == nil {
		t.Errorf("Can't find a soft deleted record")
	}

	count = 0

		t.Errorf("Should got error with invalid SQL")
	}

	if DB.Where("sdsd.zaaa = ?", "sd;;;aa").Find(&User{}).Error == nil {
		t.Errorf("Should got error with invalid SQL")
	}

	var count1, count2 int64
	DB.Model(&User{}).Count(&count1)
	if count1 <= 0 {
		t.Errorf("Should find some users")
	}

	if DB.Where("name = ?", "jinzhu; delete * from users").First(&User{}).Error == nil {

		t.Fatalf("failed to migrate, got %v", err)
	}

	if !DB.Migrator().HasIndex(&UserWithUniqueIndex{}, "idx_name") {
		t.Errorf("Failed to find created index")
	}

	if !DB.Migrator().HasIndex(&UserWithUniqueIndex{}, "idx_user_with_unique_indices_u_name") {
		t.Errorf("Failed to find created index")
	}

	if err := DB.AutoMigrate(&UserWithUniqueIndex{}); err != nil {
		t.Fatalf("failed to migrate, got %v", err)
	}

	},
	ErrParseExpectedDatePart: {
		Code:           "ParseExpectedDatePart",
		Description:    "Did not find the expected date part in the SQL expression.",
		HTTPStatusCode: http.StatusBadRequest,
	},
	ErrParseExpectedKeyword: {
		Code:           "ParseExpectedKeyword",
		Description:    "Did not find the expected keyword in the SQL expression.",
		HTTPStatusCode: http.StatusBadRequest,
	},

///

### Pydantic v1 und v2 in derselben App { #pydantic-v1-and-v2-on-the-same-app }

Es wird von Pydantic **nicht unterstützt**, dass ein Pydantic‑v2‑Modell Felder hat, die als Pydantic‑v1‑Modelle definiert sind, und umgekehrt.

```mermaid
graph TB
    subgraph "❌ Nicht unterstützt"
        direction TB

 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
 * either express or implied. See the License for the specific language
 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.helper;

import java.util.ArrayList;

moveClass("menu-is-opening menu-open"),e.stop().slideUp(this._config.animationSpeed,(function(){n.default(a._element).trigger(i),e.find(".menu-open > .nav-treeview").slideUp(),e.find(Ot).removeClass("menu-is-opening menu-open")}))},t.toggle=function(e){var t=n.default(e.currentTarget),a=t.parent(),i=a.find("> .nav-treeview");if(i.is(qt)||(a.is(Mt)||(i=a.parent().find("> .nav-treeview")),i.is(qt))){e.preventDefault();var o=t.parents(Mt).first();o.hasClass(Pt)?this.collapse(n.default(i),o):this.ex...

   * find it when available. When this is null, use the slow way.
   */
  @J2ktIncompatible @GwtIncompatible // java.lang.reflect
  private static final @Nullable Method getStackTraceElementMethod =
      (jla == null) ? null : getGetMethod();

  /**
   * The "getStackTraceDepth" method, only available on some JDKs so we use reflection to find it