So, let's review it from that simplified point of view:

* The user types the `username` and `password` in the frontend, and hits `Enter`.
* The frontend (running in the user's browser) sends that `username` and `password` to a specific URL in our API (declared with `tokenUrl="token"`).
* The API checks that `username` and `password`, and responds with a "token" (we haven't implemented any of this yet).

build --distinct_host_configuration=false

# Store performance profiling log in the mounted artifact directory.
# The profile can be viewed by visiting chrome://tracing in a Chrome browser.
# See https://docs.bazel.build/versions/main/skylark/performance.html#performance-profiling
build --profile=/tf/pkg/profile.json.gz

# Use the rebuilt gcc toolchain to compile for manylinux2014

```Python hl_lines="6-7"
{!../../../docs_src/query_params/tutorial005.py!}
```

Hier ist `needy` ein erforderlicher Query-Parameter vom Typ `str`.

Wenn Sie in Ihrem Browser eine URL wie:

```
http://127.0.0.1:8000/items/foo-item
```

... öffnen, ohne den benötigten Parameter `needy`, dann erhalten Sie einen Fehler wie den folgenden:

```JSON
{
  "detail": [

build --copt=-Wno-gnu-offsetof-extensions

# Store performance profiling log in the mounted artifact directory.
# The profile can be viewed by visiting chrome://tracing in a Chrome browser.
# See https://docs.bazel.build/versions/main/skylark/performance.html#performance-profiling
build --profile=/tf/pkg/profile.json.gz

# Use the rebuilt gcc toolchain to compile for manylinux2014

        What is the problem, question, or error?

        Write a short description telling me what you are doing, what you expect to happen, and what is currently happening.
      placeholder: |
        * Open the browser and call the endpoint `/`.
        * It returns a JSON with `{"Hello": "World"}`.
        * But I expected it to return `{"Hello": "Sara"}`.
    validations:
      required: true
  - type: dropdown
    id: os

	"cmd/go/internal/web"
	"cmd/go/internal/work"
)

var CmdBug = &base.Command{
	Run:       runBug,
	UsageLine: "go bug",
	Short:     "start a bug report",
	Long: `
Bug opens the default browser and starts a new bug report.
The report includes useful system information.
	`,
}

func init() {
	CmdBug.Flag.BoolVar(&cfg.BuildV, "v", false, "")
	base.AddChdirFlag(&CmdBug.Flag)
}

```Python hl_lines="6-7"
{!../../../docs_src/query_params/tutorial005.py!}
```

Here the query parameter `needy` is a required query parameter of type `str`.

If you open in your browser a URL like:

```
http://127.0.0.1:8000/items/foo-item
```

...without adding the required parameter `needy`, you will see an error like:

```JSON
{
  "detail": [
    {

# Requestbody

Wenn Sie Daten von einem <abbr title="Client: Eine Software, die sich mit einem Server verbindet.">Client</abbr> (sagen wir, einem Browser) zu Ihrer API senden, dann senden Sie diese als einen **Requestbody** (Deutsch: Anfragekörper).

Ein **Request**body sind Daten, die vom Client zu Ihrer API gesendet werden. Ein **Response**body (Deutsch: Antwortkörper) sind Daten, die Ihre API zum Client sendet.

// TODO: this block will start a background process not handled by the content testing
[listing.terminal]
----
$ wget https://mirrors.jenkins.io/war-stable/latest/jenkins.war
$ java -jar jenkins.war
----

In the browser, navigate to `localhost` with port `8080` to render the Jenkins dashboard.
You will be asked to set up an new administration user and which plugins to install.

=== Installation of plugins

parameter is not, and seeks to preserve the properties below in the face
of untrusted data:

Structure Preservation Property:
"... when a template author writes an HTML tag in a safe templating language,
the browser will interpret the corresponding portion of the output as a tag
regardless of the values of untrusted data, and similarly for other structures
such as attribute boundaries and JS and CSS string boundaries."