askama_web

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A compatibility add-on for askama to support many different web frameworks.

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# askama_web

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A compatibility add-on for [askama](https://lib.rs/crates/askama) to support
many different web frameworks.

## Example

E.g. if you are using [axum](https://lib.rs/crates/axum), then add `askama_web` with
the feature `"axum-0.8"` to your `Cargo.toml`:

```toml
[dependencies]
askama_web = { version = "0.14.0", features = ["axum-0.8"] }
```

Then just add `#[derive(WebTemplate)]` to your Askama templated `struct` or `enum`:

```rust
use askama::Template;
use askama_web::WebTemplate;
use axum::Router;
use axum::routing::get;

#[derive(Template, WebTemplate)]
#[template(path = "hello.html")]
struct HelloTemplate {
    name: String,
}

async fn hello() -> HelloTemplate {
    HelloTemplate {
        name: "world".to_string(),
    }
}

let app = Router::new().route("/", get(hello));
```

By selecting the feature `"axum-0.8"`, `HelloTemplate` will implement [`axum::response::IntoResponse`].
The user will receive a "Status: 200", "Content-Type: text/html; charset=utf-8"
response with the rendered struct as body.

[`axum::response::IntoResponse`]: https://docs.rs/axum/0.8.1/axum/response/trait.IntoResponse.html

## Feature flags / web framework selection

These web frameworks are currently implemented
and can be selected with their respective feature flag:

* `"actix-web-4"`: implements [`Responder`](https://docs.rs/actix-web/4/actix_web/trait.Responder.html)
  for [**actix-web**](https://docs.rs/actix-web/4/) in version 4
* `"axum-0.8"` / `"axum-core-0.5"`: implements [`IntoResponse`](https://docs.rs/axum-core/0.5/axum_core/response/trait.IntoResponse.html)
  for [**axum**](https://docs.rs/axum/0.8/) in version 0.8 /
  [**axum-core**](https://docs.rs/axum-core/0.5/) in version 0.5
* `"cot-0.6"` / `"cot_core-0.6"`: implements [`IntoResponse`](https://docs.rs/cot_core/0.6/cot_core/response/trait.IntoResponse.html)
  for [**cot**](https://docs.rs/cot/0.6/) / [**cot_core**](https://docs.rs/cot_core/0.6/) in version 0.6
* `"poem-3"`: implements [`IntoResponse`](https://docs.rs/poem/3/poem/web/trait.IntoResponse.html) for
  [**poem**](https://docs.rs/poem/3/) in version 3
* `"rocket-0.5"`: implements [`Responder`](https://docs.rs/rocket/0.5/rocket/response/trait.Responder.html) for
  [**rocket**](https://docs.rs/rocket/0.5/) in version 0.5
* `"trillium-0.2"`: implements [`Handler`](https://docs.rs/trillium/0.2/trillium/trait.Handler.html) for
  [**trillium**](https://docs.rs/trillium/0.2/) in version 0.2
* `"warp-0.4"`: implements [`Reply`](https://docs.rs/warp/0.4/warp/reply/trait.Reply.html) for
  [**warp**](https://docs.rs/warp/0.4/) in version 0.4

As well as these logging / debugging facilities to print error messages
if a template could not be rendered:

* `"eprintln"`: using rust's built-in `eprintln!()` macro
* `"log-0.4"`: using [**log**](https://docs.rs/log/0.4/) as logging framework
* `"tracing-0.1"`: using [**tracing**](https://docs.rs/tracing/0.1/) as logging framework

Some older versions are implemented, too:

* `"axum-0.7"` / `"axum-core-0.4"`
* `"cot-0.3"`, `"cot-0.4"`, `"cot-0.5"`
* `"warp-0.3"`

## License

Licensed under either of

* Apache License, Version 2.0, ([LICENSE-APACHE](https://www.apache.org/licenses/LICENSE-2.0))
* MIT license ([LICENSE-MIT](https://opensource.org/licenses/MIT))

at your option.

### Contribution

Unless you explicitly state otherwise, any contribution intentionally
submitted for inclusion in the work by you, as defined in the Apache-2.0
license, shall be dual licensed as above, without any additional terms or
conditions.

askama_web

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