modelType := reflect.ValueOf(dest).Type()
	if modelType.Kind() == reflect.Ptr {
		modelType = modelType.Elem()
	}

	if modelType.Kind() != reflect.Struct {
		if modelType.Kind() == reflect.Interface {
			modelType = reflect.Indirect(reflect.ValueOf(dest)).Elem().Type()
		}

		for modelType.Kind() == reflect.Slice || modelType.Kind() == reflect.Array || modelType.Kind() == reflect.Ptr {
			modelType = modelType.Elem()
		}

					stmt.Dest = destValueCanAddr.Interface()
					destValue = destValueCanAddr.Elem()
				}

				switch destValue.Kind() {
				case reflect.Struct:
					stmt.AddError(field.Set(stmt.Context, destValue, value))
				default:
					stmt.AddError(ErrInvalidData)
				}
			}

			switch stmt.ReflectValue.Kind() {
			case reflect.Slice, reflect.Array:
				if len(fromCallbacks) > 0 {

Just use any kind of model, any kind of class, any kind of database that you need for your application. **FastAPI** has you covered with the dependency injection system.

## Code size { #code-size }

This example might seem verbose. Keep in mind that we are mixing security, data models, utility functions and *path operations* in the same file.

	type Profile struct {
		gorm.Model
		Name         string
		Kind         string
		ProfileRefer uint
	}

	type User struct {
		gorm.Model
		Profiles []Profile `gorm:"many2many:user_profiles;foreignKey:Refer,Kind;joinForeignKey:UserRefer,Kind;References:ProfileRefer,Kind;joinReferences:ProfileR,Kind"`
		Kind     string
		Refer    uint
	}

	checkStructRelation(t, &User{}, Relation{

    }

    @Test
    public void testConcatKinds() {
        // Test static concatKinds method
        SuggestItem.Kind[] kinds1 = { SuggestItem.Kind.QUERY };
        SuggestItem.Kind[] kinds2 = { SuggestItem.Kind.DOCUMENT, SuggestItem.Kind.QUERY };

        SuggestItem.Kind[] result = SuggestItem.concatKinds(kinds1, kinds2);

        assertNotNull(result);

        item.kinds = new Kind[kinds.size()];
        for (int i = 0; i < kinds.size(); i++) {
            final String kind = kinds.get(i);
            if (kind.equals(Kind.DOCUMENT.toString())) {
                item.kinds[i] = Kind.DOCUMENT;
            } else if (kind.equals(Kind.QUERY.toString())) {
                item.kinds[i] = Kind.QUERY;
            } else if (kind.equals(Kind.USER.toString())) {

                                    return List.of(new Link() {
                                        @Override
                                        public Kind kind() {
                                            return Kind.AFTER;
                                        }

                                        @Override
                                        public Pointer pointer() {

		Relationship: association.Relationship,
		Error:        association.Error,
		Unscope:      true,
	}
}

func (association *Association) Find(out interface{}, conds ...interface{}) error {
	if association.Error == nil {
		association.Error = association.buildCondition().Find(out, conds...).Error
	}
	return association.Error
}

func (association *Association) Append(values ...interface{}) error {

                new String[] { SuggestConstants.DEFAULT_ROLE }, null, SuggestItem.Kind.DOCUMENT);

        SuggestItem item2 = new SuggestItem(new String[] { "テスト" }, readings, new String[] { "content" }, 2, 0, -1, new String[] { "tag2" },
                new String[] { SuggestConstants.DEFAULT_ROLE }, null, SuggestItem.Kind.DOCUMENT);

        SuggestItem[] mergedItems = writer.mergeItems(new SuggestItem[] { item1, item2 });

		dataResults   = map[string][]reflect.Value{}
		loaded        = map[interface{}]bool{}
		notZero, zero bool
	)

	if reflectValue.Kind() == reflect.Ptr ||
		reflectValue.Kind() == reflect.Interface {
		reflectValue = reflectValue.Elem()
	}

	switch reflectValue.Kind() {
	case reflect.Map:
		results = [][]interface{}{make([]interface{}, len(fields))}
		for idx, field := range fields {