restful 0.2.0

REST API helpers: validated Axum extractors, response envelopes, pagination, ordering, and field selection
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use axum::extract::{FromRequestParts, Query};
use axum::http::request::Parts;
use serde::de::DeserializeOwned;
use valid8r::Validate;

use super::rejection::ExtractorRejection;

/// Deserializes and validates URL query parameters before the handler runs.
#[derive(Debug, Clone, Copy, Default)]
pub struct ValidatedQuery<T>(pub T);

impl<T> ValidatedQuery<T> {
    /// Consumes the extractor and returns the inner value.
    pub fn into_inner(self) -> T {
        self.0
    }
}

impl<T, S> FromRequestParts<S> for ValidatedQuery<T>
where
    T: DeserializeOwned + Validate,
    S: Send + Sync,
{
    type Rejection = ExtractorRejection;

    async fn from_request_parts(parts: &mut Parts, state: &S) -> Result<Self, Self::Rejection> {
        let Query(value) = Query::<T>::from_request_parts(parts, state).await?;
        value.validate()?;
        Ok(ValidatedQuery(value))
    }
}