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# src/actions/rss/show.cr | |
#... | |
xml ArticlesXmlSerializer.new(articles, title: "Feed Name", description: "Here's the descr", path: request.path).render | |
#... | |
# src/actions/xml_action.cr | |
abstract class XMLAction < Lucky::Action | |
private def xml(body : String) | |
Lucky::TextResponse.new(context, content_type: "text/xml; charset=utf-8", body: body, status: 200) | |
end | |
end | |
# src/serializers/article_xml_serializer.cr | |
require "xml" | |
class ArticlesXmlSerializer < Lucky::Serializer | |
property title : String = "" | |
property description : String = "" | |
property base_url : String = "https://example.dev" | |
property path : String = "" | |
# You can set the instance vars directly. This elininates some code and also is now compile time safe! | |
# That means if you forget one of these arguments, it is the wrong type, or you have a typo, Crystal will let | |
# you know at compile-time | |
def initialize(@articles : ArticleQuery, @title, @description, @base_url, @path) | |
end | |
def render | |
XML.build(indent: " ", encoding: "UTF-8") do |xml| | |
xml.element( | |
"rss", | |
version: "2.0", | |
"xmlns:dc": "http://purl.org/dc/elements/1.1/", | |
"xmlns:content": "http://purl.org/rss/1.0/modules/content/", | |
"xmlns:atom": "http://www.w3.org/2005/Atom", | |
"xmlns:media": "http://search.yahoo.com/mrss/" | |
) do | |
xml.element("channel") do | |
xml.element("title") { xml.cdata title } | |
xml.element("description") { xml.cdata description } | |
xml.element("link") { xml.text base_url } | |
xml.element("generator") { xml.text "Solo" } | |
xml.element("lastBuildDate") { xml.text Time.utc_now.to_s } | |
xml.element("atom:link") { | |
xml.attribute "href", "#{base_url}#{path}" | |
xml.attribute "rel", "self" | |
xml.attribute "type", "application/rss+xml" | |
} | |
xml.element("ttl") { xml.text "60" } | |
@articles.each do |article| | |
xml.element("item") do | |
xml.element("title") { xml.cdata article.title } | |
if article.meta_description | |
xml.element("description") { xml.cdata article.meta_description.not_nil! } | |
end | |
xml.element("link") { xml.text "#{base_url}/articles/#{article.slug}" } | |
xml.element("dc:creator") { xml.cdata "Author Name" } | |
xml.element("pubDate") { xml.text article.created_at.to_s } | |
if article.og_image | |
xml.element("media:content") do | |
xml.attribute "url", "article.og_image" | |
xml.attribute "medium", "image" | |
end | |
end | |
if article.content | |
content = Markdown.to_html(article.content.not_nil!) | |
xml.element("content:encoded") { xml.cdata content } | |
end | |
end | |
end | |
end | |
end | |
end | |
end | |
end |
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