package clause

// From from clause
type From struct {
	Tables []Table
	Joins  []Join
}

// Name from clause name
func (from From) Name() string {
	return "FROM"
}

// Build build from clause
func (from From) Build(builder Builder) {
	if len(from.Tables) > 0 {
		for idx, table := range from.Tables {
			if idx > 0 {
				builder.WriteByte(',')
			}

			builder.WriteQuoted(table)
		}
	} else {

Anis Eleuch <******@****.***> 1719565609 +0100

# Von Pydantic v1 zu Pydantic v2 migrieren { #migrate-from-pydantic-v1-to-pydantic-v2 }

Wenn Sie eine ältere FastAPI-App haben, nutzen Sie möglicherweise Pydantic Version 1.

FastAPI Version 0.100.0 unterstützte sowohl Pydantic v1 als auch v2. Es verwendete, was auch immer Sie installiert hatten.

FastAPI Version 0.119.0 führte eine teilweise Unterstützung für Pydantic v1 innerhalb von Pydantic v2 (als `pydantic.v1`) ein, um die Migration zu v2 zu erleichtern.

# Миграция с Pydantic v1 на Pydantic v2 { #migrate-from-pydantic-v1-to-pydantic-v2 }

Если у вас старое приложение FastAPI, возможно, вы используете Pydantic версии 1.

FastAPI поддерживает и Pydantic v1, и v2 начиная с версии 0.100.0.

Если у вас был установлен Pydantic v2, использовался он. Если вместо этого был установлен Pydantic v1 — использовался он.

# Migrate from Pydantic v1 to Pydantic v2 { #migrate-from-pydantic-v1-to-pydantic-v2 }

If you have an old FastAPI app, you might be using Pydantic version 1.

FastAPI version 0.100.0 had support for either Pydantic v1 or v2. It would use whichever you had installed.

FastAPI version 0.119.0 introduced partial support for Pydantic v1 from inside of Pydantic v2 (as `pydantic.v1`), to facilitate the migration to v2.

# Migra de Pydantic v1 a Pydantic v2 { #migrate-from-pydantic-v1-to-pydantic-v2 }

Si tienes una app de FastAPI antigua, podrías estar usando Pydantic versión 1.

FastAPI ha tenido compatibilidad con Pydantic v1 o v2 desde la versión 0.100.0.

Si tenías instalado Pydantic v2, lo usaba. Si en cambio tenías Pydantic v1, usaba ese.

# Migrar do Pydantic v1 para o Pydantic v2 { #migrate-from-pydantic-v1-to-pydantic-v2 }

Se você tem uma aplicação FastAPI antiga, pode estar usando o Pydantic versão 1.

O FastAPI tem suporte ao Pydantic v1 ou v2 desde a versão 0.100.0.

Se você tiver o Pydantic v2 instalado, ele será utilizado. Se, em vez disso, tiver o Pydantic v1, será ele que será utilizado.

from .param_functions import File as File
from .param_functions import Form as Form
from .param_functions import Header as Header
from .param_functions import Path as Path
from .param_functions import Query as Query
from .param_functions import Security as Security
from .requests import Request as Request
from .responses import Response as Response
from .routing import APIRouter as APIRouter

You just need to declare a **Pydantic model** with the fields you want to receive as **form fields**, and then declare the parameter as `Form`:

{* ../../docs_src/request_form_models/tutorial001_an_py39.py hl[9:11,15] *}

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

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

**FastAPI**'s `UploadFile` inherits directly from **Starlette**'s `UploadFile`, but adds some necessary parts to make it compatible with **Pydantic** and the other parts of FastAPI.

///

## What is "Form Data" { #what-is-form-data }

The way HTML forms (`<form></form>`) sends the data to the server normally uses a "special" encoding for that data, it's different from JSON.