{* ../../docs_src/query_param_models/tutorial001_an_py310.py hl[9:13,17] *}

**FastAPI** will **extract** the data for **each field** from the **query parameters** in the request and give you the Pydantic model you defined.

## Check the Docs { #check-the-docs }

You can see the query parameters in the docs UI at `/docs`:

<div class="screenshot">

events {
    worker_connections  4096;
}

http {
    include       /etc/nginx/mime.types;
    default_type  application/octet-stream;

    log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
                      '$status $body_bytes_sent "$http_referer" '
                      '"$http_user_agent" "$http_x_forwarded_for"';

    access_log  /var/log/nginx/access.log  main;
    sendfile        on;

    val lowestInterestingVersion: GradleVersion = GradleVersion.version("0.8")
    val lowestTestedVersion: GradleVersion = GradleVersion.version("4.0")

    init {
        val releasedVersions = releasedVersionsFile.asFile.reader().use {
            Gson().fromJson(it, ReleasedVersions::class.java)
        }

        val latestFinalRelease = releasedVersions.finalReleases.first()
        val latestRelease =

        byte[] initialHash = preauthService.getCurrentPreauthHash(sessionId);
        assertNotNull(initialHash);

        // Update with negotiate message
        byte[] negotiateMessage = "SMB2 Negotiate Request".getBytes();
        preauthService.updatePreauthHash(sessionId, negotiateMessage);

        byte[] afterNegotiateHash = preauthService.getCurrentPreauthHash(sessionId);
        assertNotNull(afterNegotiateHash);

        location = new InputLocation(-1, -1, inputSource);
        location.setLocation(0, location);
    }

    @Override
    public void convertReporting(Model model, ModelBuildingRequest request, ModelProblemCollector problems) {
        Reporting reporting = model.getReporting();

        if (reporting == null) {
            return;
        }

        Build build = model.getBuild();

import com.google.common.annotations.J2ktIncompatible;
import com.google.errorprone.annotations.CanIgnoreReturnValue;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.Reader;
import java.io.Writer;
import java.nio.charset.Charset;
import java.util.Iterator;
import java.util.stream.Stream;

/**

// getting cached statements, setting cached statements, and deleting cached statements.
type Store interface {
	// New creates a new Stmt object and caches it.
	// Parameters:
	//   ctx: The context for the request, which can carry deadlines, cancellation signals, etc.
	//   key: The key representing the SQL query, used for caching and preparing the statement.

	// ErrNotImplemented - Indicates the functionality which is not implemented
	ErrNotImplemented = errors.New("The method is not implemented")
)

func (c *OperatorDNS) addAuthHeader(r *http.Request) error {
	if c.username == "" || c.password == "" {
		return nil
	}

	claims := &jwt.StandardClaims{
		ExpiresAt: int64(15 * time.Minute),
		Issuer:    c.username,
		Subject:   config.EnvDNSWebhook,
	}

// Code generated by github.com/tinylib/msgp DO NOT EDIT.

package cmd

import (
	"github.com/tinylib/msgp/msgp"
)

// DecodeMsg implements msgp.Decodable
func (z *BaseOptions) DecodeMsg(dc *msgp.Reader) (err error) {
	var field []byte
	_ = field
	var zb0001 uint32
	zb0001, err = dc.ReadMapHeader()
	if err != nil {
		err = msgp.WrapError(err)
		return
	}
	for zb0001 > 0 {
		zb0001--
		field, err = dc.ReadMapKeyPtr()

    // ===================================================================================
    //                                                                   Request Parameter
    //                                                                   =================
    public SearchRequestParams request() {
        return _searchRequestParams;
    }

    public void setPreference(final String preference) {
        _preference = preference;