Struct Json 

pub struct Json<T>(pub T);

JSON body extractor.

Extracts a JSON body from the request and deserializes it to type T.

Error Responses

• 415 Unsupported Media Type: Content-Type is not application/json
• 413 Payload Too Large: Body exceeds configured size limit
• 422 Unprocessable Entity: JSON parsing failed

Example

use fastapi_core::extract::Json;
use serde::Deserialize;

#[derive(Deserialize)]
struct CreateUser {
    name: String,
    email: String,
}

async fn create_user(Json(user): Json<CreateUser>) -> impl IntoResponse {
    format!("Created user: {}", user.name)
}

Tuple Fields

0: T

Implementations

impl<T> Json<T>

pub fn into_inner(self) -> T

Unwrap the inner value.

Trait Implementations

impl<T: Clone> Clone for Json<T>

fn clone(&self) -> Json<T>

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<T: Debug> Debug for Json<T>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<T: Default> Default for Json<T>

fn default() -> Json<T>

Returns the “default value” for a type.

impl<T> Deref for Json<T>

type Target = T

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.

impl<T> DerefMut for Json<T>

fn deref_mut(&mut self) -> &mut Self::Target

Mutably dereferences the value.

impl<T: DeserializeOwned> FromRequest for Json<T>

type Error = JsonExtractError

Error type when extraction fails.

async fn from_request( ctx: &RequestContext, req: &mut Request, ) -> Result<Self, Self::Error>

Extract a value from the request.

impl<T: Serialize> IntoResponse for Json<T>

fn into_response(self) -> Response

Convert into a response.

impl<T: Copy> Copy for Json<T>

impl<T: Serialize + 'static> ResponseProduces<T> for Json<T>