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feat(main): Add support for Tera templates

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Sets up the structure required to carry Tera templates in the
actix-web state.

The (still very barebones) index renderer has been updated to render a
Tera template.
This commit is contained in:
Vincent Ambo 2018-04-08 17:30:03 +02:00
parent b83dd99e30
commit 3db069c60d
5 changed files with 44 additions and 16 deletions
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37
src/main.rs
View file

@ -4,12 +4,19 @@ extern crate diesel;
#[macro_use]
extern crate log;
#[macro_use]
extern crate tera;
#[macro_use]
extern crate serde_derive;
extern crate chrono;
extern crate actix;
extern crate actix_web;
extern crate env_logger;
extern crate r2d2;
extern crate futures;
extern crate serde;
pub mod schema;
pub mod models;
@ -27,28 +34,27 @@ use models::Thread;
/// Represents the state carried by the web server actors.
struct AppState {
/// Address of the database actor
db: Addr<Syn, DbExecutor>,
/// Compiled templates
tera: tera::Tera,
}
/// Really inefficient renderer example!
fn render_threads(threads: Vec<Thread>) -> String {
let mut res = String::new();
for thread in threads {
res.push_str(&format!("Subject: {}\n", thread.title));
res.push_str(&format!("Posted at: {}\n\n", thread.posted));
res.push_str(&format!("{}\n", thread.body));
res.push_str("-------------------------------");
}
res
fn render_threads(tpl: &tera::Tera, threads: Vec<Thread>) -> String {
let mut ctx = tera::Context::new();
ctx.add("threads", &threads);
tpl.render("index.html", &ctx).expect("Oh no")
}
fn forum_index(req: HttpRequest<AppState>) -> FutureResponse<HttpResponse> {
req.state().db.send(ListThreads)
.from_err()
.and_then(|res| match res {
Ok(threads) => Ok(HttpResponse::from(render_threads(threads))),
.and_then(move |res| match res {
Ok(threads) => Ok(HttpResponse::Ok()
.content_type("text/html")
.body(render_threads(&req.state().tera, threads))),
Err(err) => {
error!("Error loading threads: {}", err);
Ok(HttpResponse::InternalServerError().into())
@ -74,7 +80,10 @@ fn main() {
info!("Initialising HTTP server ...");
server::new(move || {
App::with_state(AppState { db: db_addr.clone() })
let template_path = concat!(env!("CARGO_MANIFEST_DIR"), "/templates/**/*");
let tera = compile_templates!(template_path);
App::with_state(AppState { db: db_addr.clone(), tera })
.middleware(middleware::Logger::default())
.route("/", http::Method::GET, &forum_index)
}).bind("127.0.0.1:4567").unwrap().start();