HtmxMiddleware

Struct HtmxMiddleware 

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pub struct HtmxMiddleware;
Expand description

A middleware for Actix Web that handles htmx specific headers and triggers.

This module provides middleware functionality for using htmx in your Actix Web application. It processes htmx headers and manages various types of triggers that can be used for client-side interactions.

HtmxMiddleware injects an Htmx struct into any route that it wraps. This Htmx struct provides helper properties and methods that allow for your application to easily interact with htmx.

§Example

use actix_web::{web, App, HttpServer, Responder, HttpResponse};
use actix_htmx::{Htmx, HtmxMiddleware};

#[actix_web::main]
async fn main() -> std::io::Result<()> {
    HttpServer::new(|| {
        App::new()
           .wrap(HtmxMiddleware)
            .route("/", web::get().to(index))
    })
    .bind("127.0.0.1:8080")?
    .run()
    .await
}

async fn index(htmx: Htmx) -> impl Responder {
    if !htmx.is_htmx {
        HttpResponse::Ok().body(r##"
            <!DOCTYPE html>
            <html>
                <head>
                    <title>htmx example</title>
                    <script src="https://unpkg.com/htmx.org@2.0.6"></script>
                </head>
                <body>
                    <div id="content">
                        This was not an htmx request! <a href="/" hx-get="/" hx-target="#content">Make it htmx!</a>
                    </div>
                </body>
            </html>
        "##)
    } else {
        HttpResponse::Ok().body(r##"
        <div id="content">
            This was an htmx request! <a href="/">Let's go back to plain old HTML</a>
        <div>
        "##)
    }
}

The middleware automatically processes the following htmx headers:

  • HX-Trigger: For standard htmx triggers
  • HX-Trigger-After-Settle: For triggers that fire after the settling phase
  • HX-Trigger-After-Swap: For triggers that fire after content swap

Trait Implementations§

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impl<S, B> Transform<S, ServiceRequest> for HtmxMiddleware
where S: Service<ServiceRequest, Response = ServiceResponse<B>, Error = Error>, S::Future: 'static, B: 'static,

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type Response = ServiceResponse<B>

Responses produced by the service.
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type Error = Error

Errors produced by the service.
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type Transform = InnerHtmxMiddleware<S>

The TransformService value created by this factory
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type InitError = ()

Errors produced while building a transform service.
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type Future = Ready<Result<<HtmxMiddleware as Transform<S, ServiceRequest>>::Transform, <HtmxMiddleware as Transform<S, ServiceRequest>>::InitError>>

The future response value.
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fn new_transform(&self, service: S) -> Self::Future

Creates and returns a new Transform component, asynchronously

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