Add pagination to the blog page
No UI to control it yet
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@ -91,6 +91,15 @@ impl Post {
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.expect("Error loading recent posts for blog")
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}
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pub fn blog_page(conn: &PgConnection, blog: &Blog, (min, max): (i32, i32)) -> Vec<Post> {
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posts::table.filter(posts::blog_id.eq(blog.id))
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.order(posts::creation_date.desc())
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.offset(min.into())
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.limit((max - min).into())
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.load::<Post>(conn)
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.expect("Error loading a page of posts for blog")
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}
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pub fn get_authors(&self, conn: &PgConnection) -> Vec<User> {
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use schema::users;
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use schema::post_authors;
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@ -36,6 +36,7 @@ fn main() {
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let pool = setup::check();
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rocket::ignite()
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.mount("/", routes![
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routes::blogs::paginated_details,
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routes::blogs::details,
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routes::blogs::activity_details,
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routes::blogs::outbox,
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@ -18,24 +18,30 @@ use plume_models::{
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posts::Post,
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users::User
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};
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use routes::Page;
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#[get("/~/<name>", rank = 2)]
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fn details(name: String, conn: DbConn, user: Option<User>) -> Template {
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#[get("/~/<name>?<page>", rank = 2)]
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fn paginated_details(name: String, conn: DbConn, user: Option<User>, page: Page) -> Template {
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may_fail!(user, Blog::find_by_fqn(&*conn, name), "Requested blog couldn't be found", |blog| {
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let recents = Post::get_recents_for_blog(&*conn, &blog, 5);
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let posts = Post::blog_page(&*conn, &blog, page.limits());
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let authors = &blog.list_authors(&*conn);
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Template::render("blogs/details", json!({
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"blog": &blog,
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"account": user,
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"is_author": user.map(|x| x.is_author_in(&*conn, blog.clone())),
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"recents": recents.into_iter().map(|p| p.to_json(&*conn)).collect::<Vec<serde_json::Value>>(),
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"posts": posts.into_iter().map(|p| p.to_json(&*conn)).collect::<Vec<serde_json::Value>>(),
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"authors": authors.into_iter().map(|u| u.to_json(&*conn)).collect::<Vec<serde_json::Value>>(),
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"n_authors": authors.len()
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}))
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})
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}
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#[get("/~/<name>", rank = 3)]
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fn details(name: String, conn: DbConn, user: Option<User>) -> Template {
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paginated_details(name, conn, user, Page::first())
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}
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#[get("/~/<name>", rank = 1)]
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fn activity_details(name: String, conn: DbConn, _ap: ApRequest) -> ActivityStream<CustomGroup> {
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let blog = Blog::find_local(&*conn, name).unwrap();
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@ -1,5 +1,11 @@
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use rocket::response::NamedFile;
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use std::path::{Path, PathBuf};
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use rocket::{
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http::uri::{FromUriParam, UriDisplay},
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response::NamedFile
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};
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use std::{
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fmt,
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path::{Path, PathBuf}
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};
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macro_rules! may_fail {
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($account:expr, $expr:expr, $template:expr, $msg:expr, | $res:ident | $block:block) => {
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@ -28,6 +34,38 @@ macro_rules! may_fail {
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};
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}
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const ITEMS_PER_PAGE: i32 = 10;
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#[derive(FromForm)]
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pub struct Page {
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page: i32
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}
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impl UriDisplay for Page {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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write!(f, "page={}", &self.page as &UriDisplay)
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}
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}
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impl FromUriParam<i32> for Page {
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type Target = Page;
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fn from_uri_param(num: i32) -> Page {
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Page { page: num }
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}
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}
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impl Page {
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pub fn first() -> Page {
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Page {
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page: 1
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}
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}
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pub fn limits(&self) -> (i32, i32) {
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((self.page - 1) * ITEMS_PER_PAGE, self.page * ITEMS_PER_PAGE)
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}
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}
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pub mod blogs;
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pub mod comments;
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pub mod errors;
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@ -22,14 +22,14 @@
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<section>
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<h2>{{ "Latest articles" | _ }}</h2>
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{% if recents | length < 1 %}
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{% if posts | length < 1 %}
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<p>{{ "No posts to see here yet." | _ }}</p>
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{% endif %}
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{% if is_author %}
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<a href="new" class="button inline-block">{{ "New article" | _ }}</a>
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{% endif %}
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<div class="cards">
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{% for article in recents %}
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{% for article in posts %}
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{{ macros::post_card(article=article) }}
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{% endfor %}
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</div>
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