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Add media:content thumbnail to RSS feed (#4413)

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* Add media:content thumbnail to RSS feed

* Run formatter

* Add media namespace definition

* Add comment linking to media-rss documentation
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Elara 2024-01-29 05:56:35 -08:00 committed by GitHub
parent eb0dc2fda4
commit 0e9924a2b3
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1 changed files with 29 additions and 1 deletions
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30
crates/routes/src/feeds.rs
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@ -26,7 +26,12 @@ use lemmy_utils::{
utils::markdown::{markdown_to_html, sanitize_html},
};
use once_cell::sync::Lazy;
use rss::{extension::dublincore::DublinCoreExtension, Channel, Guid, Item};
use rss::{
extension::{dublincore::DublinCoreExtension, ExtensionBuilder, ExtensionMap},
Channel,
Guid,
Item,
};
use serde::Deserialize;
use std::{collections::BTreeMap, str::FromStr};
@ -80,6 +85,10 @@ static RSS_NAMESPACE: Lazy<BTreeMap<String, String>> = Lazy::new(|| {
"dc".to_string(),
rss::extension::dublincore::NAMESPACE.to_string(),
);
h.insert(
"media".to_string(),
"http://search.yahoo.com/mrss/".to_string(),
);
h
});
@ -509,6 +518,24 @@ fn create_post_items(
description.push_str(&html);
}
let mut extensions = ExtensionMap::new();
// If there's a thumbnail URL, add a media:content tag to display it.
// See https://www.rssboard.org/media-rss#media-content for details.
if let Some(url) = p.post.thumbnail_url {
let mut thumbnail_ext = ExtensionBuilder::default();
thumbnail_ext.name("media:content".to_string());
thumbnail_ext.attrs(BTreeMap::from([
("url".to_string(), url.to_string()),
("medium".to_string(), "image".to_string()),
]));
extensions.insert(
"media".to_string(),
BTreeMap::from([("content".to_string(), vec![thumbnail_ext.build()])]),
);
}
let i = Item {
title: Some(sanitize_html(&p.post.name)),
pub_date: Some(p.post.published.to_rfc2822()),
@ -517,6 +544,7 @@ fn create_post_items(
description: Some(description),
dublin_core_ext,
link,
extensions,
..Default::default()
};