Ghost/core/frontend/services/rss/generate-feed.js
Hannah Wolfe 22e13acd65 Updated var declarations to const/let and no lists
- All var declarations are now const or let as per ES6
- All comma-separated lists / chained declarations are now one declaration per line
- This is for clarity/readability but also made running the var-to-const/let switch smoother
- ESLint rules updated to match

How this was done:

- npm install -g jscodeshift
- git clone https://github.com/cpojer/js-codemod.git
- git clone git@github.com:TryGhost/Ghost.git shallow-ghost
- cd shallow-ghost
- jscodeshift -t ../js-codemod/transforms/unchain-variables.js . -v=2
- jscodeshift -t ../js-codemod/transforms/no-vars.js . -v=2
- yarn
- yarn test
- yarn lint / fix various lint errors (almost all indent) by opening files and saving in vscode
- grunt test-regression
- sorted!
2020-04-29 16:51:13 +01:00

102 lines
3.1 KiB
JavaScript

const downsize = require('downsize');
const Promise = require('bluebird');
const cheerio = require('cheerio');
const RSS = require('rss');
const urlUtils = require('../../../server/lib/url-utils');
const urlService = require('../url');
let generateFeed;
let generateItem;
let generateTags;
generateTags = function generateTags(data) {
if (data.tags) {
return data.tags.reduce(function (tags, tag) {
if (tag.visibility !== 'internal') {
tags.push(tag.name);
}
return tags;
}, []);
}
return [];
};
generateItem = function generateItem(post, secure) {
const itemUrl = urlService.getUrlByResourceId(post.id, {secure, absolute: true});
const htmlContent = cheerio.load(urlUtils.htmlRelativeToAbsolute(post.html, itemUrl, {secure}) || '', {decodeEntities: false});
const item = {
title: post.title,
// @TODO: DRY this up with data/meta/index & other excerpt code
description: post.custom_excerpt || post.meta_description || downsize(htmlContent.html(), {words: 50}),
guid: post.id,
url: itemUrl,
date: post.published_at,
categories: generateTags(post),
author: post.primary_author ? post.primary_author.name : null,
custom_elements: []
};
if (post.feature_image) {
const imageUrl = urlUtils.urlFor('image', {image: post.feature_image, secure}, true);
// Add a media content tag
item.custom_elements.push({
'media:content': {
_attr: {
url: imageUrl,
medium: 'image'
}
}
});
// Also add the image to the content, because not all readers support media:content
htmlContent('p').first().before('<img src="' + imageUrl + '" />');
htmlContent('img').attr('alt', post.title);
}
item.custom_elements.push({
'content:encoded': {
_cdata: htmlContent.html()
}
});
return item;
};
/**
* Generate Feed
*
* Data is an object which contains the res.locals + results from fetching a collection, but without related data.
*
* @param {string} baseUrl
* @param {{title, description, safeVersion, secure, posts}} data
*/
generateFeed = function generateFeed(baseUrl, data) {
const {secure} = data;
const feed = new RSS({
title: data.title,
description: data.description,
generator: 'Ghost ' + data.safeVersion,
feed_url: urlUtils.urlFor({relativeUrl: baseUrl, secure}, true),
site_url: urlUtils.urlFor('home', {secure}, true),
image_url: urlUtils.urlFor({relativeUrl: 'favicon.png'}, true),
ttl: '60',
custom_namespaces: {
content: 'http://purl.org/rss/1.0/modules/content/',
media: 'http://search.yahoo.com/mrss/'
}
});
return data.posts.reduce((feedPromise, post) => {
return feedPromise.then(() => {
const item = generateItem(post, secure);
return feed.item(item);
});
}, Promise.resolve()).then(() => {
return feed.xml();
});
};
module.exports = generateFeed;