Json

Struct Json 

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pub struct Json<D>(pub D);
Available on crate feature json only.
Expand description

A type that represents JSON content.

Note that this is just a newtype wrapper around data and does not provide any content validation. It is primarily useful as a request extractor and response type for REST-ful endpoints.

§Examples

use cot::json::Json;

let Json(data) = Json("content");
assert_eq!(data, "content");

Tuple Fields§

§0: D

Trait Implementations§

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impl<D: JsonSchema> ApiOperationPart for Json<D>

Available on crate feature openapi only.
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fn modify_api_operation( operation: &mut Operation, _route_context: &RouteContext<'_>, schema_generator: &mut SchemaGenerator, )

Modify the OpenAPI operation object. Read more
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impl<S: JsonSchema> ApiOperationResponse for Json<S>

Available on crate feature openapi only.
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fn api_operation_responses( _operation: &mut Operation, _route_context: &RouteContext<'_>, schema_generator: &mut SchemaGenerator, ) -> Vec<(Option<StatusCode>, Response)>

Returns a list of OpenAPI response objects for this type. Read more
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impl<D: Clone> Clone for Json<D>

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

Returns a duplicate of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<D: Debug> Debug for Json<D>

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

Formats the value using the given formatter. Read more
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impl<D: DeserializeOwned> FromRequest for Json<D>

Extractor that gets the request body as JSON and deserializes it into a type T implementing serde::de::DeserializeOwned.

The content type of the request must be application/json.

§Errors

Throws an error if the content type is not application/json. Throws an error if the request body could not be read. Throws an error if the request body could not be deserialized - either because the JSON is invalid or because the deserialization to the target structure failed.

§Example

use cot::RequestHandler;
use cot::json::Json;
use cot::test::TestRequestBuilder;
use serde::{Deserialize, Serialize};

#[derive(Serialize, Deserialize)]
struct MyData {
    hello: String,
}

async fn my_handler(Json(data): Json<MyData>) -> Json<MyData> {
    Json(data)
}

let request = TestRequestBuilder::get("/")
    .json(&MyData {
        hello: "world".to_string(),
    })
    .build();

assert_eq!(
    my_handler
        .handle(request)
        .await?
        .into_body()
        .into_bytes()
        .await?,
    "{\"hello\":\"world\"}"
);
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async fn from_request(head: &RequestHead, body: Body) -> Result<Self>

Extracts data from the request. Read more
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impl<D: Hash> Hash for Json<D>

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fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher. Read more
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fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl<D: Serialize> IntoResponse for Json<D>

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fn into_response(self) -> Result<Response>

Create a new JSON response.

This creates a new Response object with a content type of application/json and given body.

§Examples
use std::collections::HashMap;

use cot::json::Json;
use cot::response::IntoResponse;

let data = HashMap::from([("hello", "world")]);
let json = Json(data);

let response = json.into_response();
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fn with_header<K, V>(self, key: K, value: V) -> WithHeader<Self>
where K: TryInto<HeaderName>, V: TryInto<HeaderValue>, Self: Sized,

Modifies the response by appending the specified header. Read more
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fn with_content_type<V>(self, content_type: V) -> WithContentType<Self>
where V: TryInto<HeaderValue>, Self: Sized,

Modifies the response by setting the Content-Type header. Read more
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fn with_status(self, status: StatusCode) -> WithStatus<Self>
where Self: Sized,

Modifies the response by setting the status code. Read more
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fn with_body(self, body: impl Into<Body>) -> WithBody<Self>
where Self: Sized,

Modifies the response by setting the body. Read more
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fn with_extension<T>(self, extension: T) -> WithExtension<Self, T>
where T: Clone + Send + Sync + 'static, Self: Sized,

Modifies the response by inserting an extension. Read more
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impl<D: Ord> Ord for Json<D>

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fn cmp(&self, other: &Json<D>) -> Ordering

This method returns an Ordering between self and other. Read more
1.21.0 · Source§

fn max(self, other: Self) -> Self
where Self: Sized,

Compares and returns the maximum of two values. Read more
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fn min(self, other: Self) -> Self
where Self: Sized,

Compares and returns the minimum of two values. Read more
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fn clamp(self, min: Self, max: Self) -> Self
where Self: Sized,

Restrict a value to a certain interval. Read more
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impl<D: PartialEq> PartialEq for Json<D>

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fn eq(&self, other: &Json<D>) -> bool

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl<D: PartialOrd> PartialOrd for Json<D>

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fn partial_cmp(&self, other: &Json<D>) -> Option<Ordering>

This method returns an ordering between self and other values if one exists. Read more
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fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator. Read more
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fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator. Read more
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fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator. Read more
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fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator. Read more
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impl<D: Copy> Copy for Json<D>

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impl<D: Eq> Eq for Json<D>

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impl<D> StructuralPartialEq for Json<D>

Auto Trait Implementations§

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impl<D> Freeze for Json<D>
where D: Freeze,

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impl<D> RefUnwindSafe for Json<D>
where D: RefUnwindSafe,

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impl<D> Send for Json<D>
where D: Send,

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impl<D> Sync for Json<D>
where D: Sync,

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impl<D> Unpin for Json<D>
where D: Unpin,

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impl<D> UnwindSafe for Json<D>
where D: UnwindSafe,

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> Chain<T> for T

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fn len(&self) -> usize

The number of items that this chain link consists of.
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fn append_to(self, v: &mut Vec<T>)

Append the elements in this link to the chain.
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<Q, K> Comparable<K> for Q
where Q: Ord + ?Sized, K: Borrow<Q> + ?Sized,

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fn compare(&self, key: &K) -> Ordering

Compare self to key and return their ordering.
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impl<T> Container<T> for T
where T: Clone,

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type Iter = Once<T>

An iterator over the items within this container, by value.
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fn get_iter(&self) -> <T as Container<T>>::Iter

Iterate over the elements of the container (using internal iteration because GATs are unstable).
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impl<T> DynClone for T
where T: Clone,

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fn __clone_box(&self, _: Private) -> *mut ()

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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Compare self to key and return true if they are equal.
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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Checks if this value is equivalent to the given key. Read more
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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Checks if this value is equivalent to the given key. Read more
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impl<T> Fake for T

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fn fake<U>(&self) -> U
where Self: FakeBase<U>,

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fn fake_with_rng<U, R>(&self, rng: &mut R) -> U
where R: Rng + ?Sized, Self: FakeBase<U>,

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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> FromRef<T> for T
where T: Clone,

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fn from_ref(input: &T) -> T

Converts to this type from a reference to the input type.
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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> IntoApi for T

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fn into_api<A>(self) -> UseApi<T, A>

into UseApi
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impl<T> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<T> IntoField<Auto<T>> for T

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fn into_field(self) -> Auto<T>

Available on crate feature db only.
Converts the type to the field type.
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impl<T> Same for T

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type Output = T

Should always be Self
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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<V, T> VZip<V> for T
where V: MultiLane<T>,

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fn vzip(self) -> V

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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more
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impl<A, B, T> HttpServerConnExec<A, B> for T
where B: Body,

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impl<T> OrderedContainer<T> for T
where T: Clone,