exercising permissions granted by this License.

      "Source" form shall mean the preferred form for making modifications,
      including but not limited to software source code, documentation
      source, and configuration files.

      "Object" form shall mean any form resulting from mechanical
      transformation or translation of a Source form, including but
      not limited to compiled object code, generated documentation,

package gorm

import (
	"reflect"

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

// Migrator returns migrator
func (db *DB) Migrator() Migrator {
	tx := db.getInstance()

	// apply scopes to migrator
	for len(tx.Statement.scopes) > 0 {
		tx = tx.executeScopes()
	}

	return tx.Dialector.Migrator(tx.Session(&Session{}))
}

// AutoMigrate run auto migration for given models

# 请求表单与文件

FastAPI 支持同时使用 `File` 和 `Form` 定义文件和表单字段。

/// info | "说明"

接收上传文件或表单数据，要预先安装 <a href="https://github.com/Kludex/python-multipart" class="external-link" target="_blank">`python-multipart`</a>。

例如，`pip install python-multipart`。

///

## 导入 `File` 与 `Form`

```Python hl_lines="1"
{!../../docs_src/request_forms_and_files/tutorial001.py!}
```

## 定义 `File` 与 `Form` 参数

创建文件和表单参数的方式与 `Body` 和 `Query` 一样：

                                        <la:text styleId="term" property="term" styleClass="form-control"/>
                                    </div>
                                </div>
                                <div class="form-group row">
                                    <label for="queries" class="col-sm-3 text-sm-right col-form-label"><la:message
                                            key="labels.related_query_queries"/></label>

package schema_test

import (
	"reflect"
	"sync"
	"testing"

	"gorm.io/gorm"
	"gorm.io/gorm/schema"
)

type UserWithCallback struct{}

func (UserWithCallback) BeforeSave(*gorm.DB) error {
	return nil
}

func (UserWithCallback) AfterCreate(*gorm.DB) error {
	return nil
}

func TestCallback(t *testing.T) {
	user, err := schema.Parse(&UserWithCallback{}, &sync.Map{}, schema.NamingStrategy{})
	if err != nil {

}

func TestBelongsToAssociationUnscoped(t *testing.T) {
	type ItemParent struct {
		gorm.Model
		Logo string `gorm:"not null;type:varchar(50)"`
	}
	type ItemChild struct {
		gorm.Model
		Name         string `gorm:"type:varchar(50)"`
		ItemParentID uint
		ItemParent   ItemParent
	}

	tx := DB.Session(&gorm.Session{})
	tx.Migrator().DropTable(&ItemParent{}, &ItemChild{})

import (
	"fmt"
	"reflect"
	"strings"

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

// BeforeCreate before create hooks
func BeforeCreate(db *gorm.DB) {
	if db.Error == nil && db.Statement.Schema != nil && !db.Statement.SkipHooks && (db.Statement.Schema.BeforeSave || db.Statement.Schema.BeforeCreate) {
		callMethod(db, func(value interface{}, tx *gorm.DB) (called bool) {

                                                    <div class="form-group row">
                                                        <label for="name" class="col-sm-3 text-sm-right col-form-label"><la:message
                                                                key="labels.storage_folder_name"/></label>
                                                        <div class="form-inline col-sm-9">

package tests_test

import (
	"testing"

	"gorm.io/gorm"
	. "gorm.io/gorm/utils/tests"
)

func TestUpdateBelongsTo(t *testing.T) {
	user := *GetUser("update-belongs-to", Config{})

	if err := DB.Create(&user).Error; err != nil {
		t.Fatalf("errors happened when create: %v", err)
	}

	user.Company = Company{Name: "company-belongs-to-association"}
	user.Manager = &User{Name: "manager-belongs-to-association"}

      """
      |--AaB03x
      |Content-Disposition: form-data; name="field with spaces"; filename="filename with spaces.txt"
      |Content-Type: text/plain; charset=utf-8
      |
      |okay
      |--AaB03x
      |Content-Disposition: form-data; name="field with %22"
      |
      |"
      |--AaB03x
      |Content-Disposition: form-data; name="field with %22"
      |
      |%22
      |--AaB03x