// Find
	var toys []Toy
	if DB.Model(&users).Association("Toys").Find(&toys); len(toys) != 6 {
		t.Errorf("toys count should be %v, but got %v", 6, len(toys))
	}

	// Find Tools (polymorphic with custom type and id)
	var tools []Tools
	DB.Model(&users).Association("Tools").Find(&tools)

	if len(tools) != 2 {
		t.Errorf("tools count should be %v, but got %v", 2, len(tools))
	}

	// Append

(function(){var b=a(this);b.valAttr("async",!1),a.each(a.split(b.attr("data-validation")),function(c,d){var e=a.formUtils.validators["validate_"+d];e&&e.async&&b.valAttr("async","yes")})})})}(a,window),function(a,b){"use strict";function c(b){b&&"custom"===b.errorMessagePosition&&"function"==typeof b.errorMessageCustom&&(a.formUtils.warn("Use of deprecated function errorMessageCustom, use config.submitErrorMessageCallback instead"),b.submitErrorMessageCallback=function(a,c){b.errorMessageCustom(...

但是如果你需要，它就在这里。🤓

///

{* ../../docs_src/dependencies/tutorial008b_an_py310.py hl[18:22,31] *}

如果你想捕获异常并基于它创建一个自定义响应，请创建一个[自定义异常处理器](../handling-errors.md#install-custom-exception-handlers)。

## 同时使用 `yield` 和 `except` 的依赖项 { #dependencies-with-yield-and-except }

如果你在带有 `yield` 的依赖中使用 `except` 捕获了一个异常，并且你没有再次抛出它（或抛出一个新异常），FastAPI 将无法察觉发生过异常，就像普通的 Python 代码那样：

type BaseOptions struct{}

// RenameOptions represents rename API options, currently its same as BaseOptions
type RenameOptions struct {
	BaseOptions
}

// DiskInfoOptions options for requesting custom results.
type DiskInfoOptions struct {
	DiskID  string `msg:"id"`
	Metrics bool   `msg:"m"`
	NoOp    bool   `msg:"np"`
}

// DiskInfo is an extended type which returns current
// disk usage per path.

  /*
   * We avoid using a method reference or lambda here for now:
   *
   * - method reference: Inside Google, CacheBuilder is used from the implementation of a custom
   *   ClassLoader that is sometimes used as a system classloader. That's a problem because
   *   method-reference linking tries to look up the system classloader, and it fails because there
   *   isn't one yet.
   *

password: `elastic-password`.

==== Other useful arguments

- In order to start a node with a different max heap space add: `-Dtests.heap.size=4G`
- In order to disable assertions add: `-Dtests.asserts=false`
- In order to use a custom data directory: `--data-dir=/tmp/foo`
- In order to preserve data in between executions: `--preserve-data`
- In order to remotely attach a debugger to the process: `--debug-jvm`

FastAPI 0.106.0 より前では、`yield` の後で例外を送出することはできませんでした。`yield` を持つ依存関係の終了コードはレスポンス送信「後」に実行されるため、[例外ハンドラ](../tutorial/handling-errors.md#install-custom-exception-handlers)はすでに実行済みでした。

これは主に、依存関係が "yield" した同じオブジェクトをバックグラウンドタスク内で利用できるようにするための設計でした。終了コードはバックグラウンドタスク完了後に実行されるからです。

これは、レスポンスがネットワーク上を移動するのを待っている間にリソースを保持しないようにする意図で、FastAPI 0.106.0 で変更されました。

		// the client. So, logger and Error response XML were not using this
		// value. This is set here so that this header can be logged as
		// part of the log entry, Error response XML and auditing.
		// Set custom headers such as x-amz-request-id for each request.
		w.Header().Set(xhttp.AmzRequestID, mustGetRequestID(UTCNow()))
		if globalLocalNodeName != "" {
			w.Header().Set(xhttp.AmzRequestHostID, globalLocalNodeNameHex)
		}

        buffer[bufferIndex + 2] = 1; // Error context count
        buffer[bufferIndex + 3] = 0; // Reserved
        SMBUtil.writeInt4(0, buffer, bufferIndex + 4); // ByteCount (0 for error)

        // Create a custom test response that tracks if readErrorResponse was called
        class TestSmb2ReadResponse extends Smb2ReadResponse {
            boolean errorResponseCalled = false;

      return true;
    }
  }

  /**
   * Per <a href="https://github.com/google/guava/issues/1635">issue 1635</a>, In JDK 1.7.0_51-b13,
   * {@link TypeVariableImpl#equals(Object)} is changed to no longer be equal to custom TypeVariable
   * implementations. As a result, we need to make sure our TypeVariable implementation respects
   * symmetry. Moreover, we don't want to reconstruct a native type variable {@code <A>} using our