Ghost/core/server/controllers/rss.js

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var _ = require('lodash'),
url = require('url'),
errors = require('../errors'),
i18n = require('../i18n'),
safeString = require('../utils/index').safeString,
settingsCache = require('../settings/cache'),
// Slightly less ugly temporary hack for location of things
fetchData = require('./frontend/fetch-data'),
handleError = require('./frontend/error'),
rssService = require('../services/rss'),
generate;
// @TODO: is this the right logic? Where should this live?!
function getBaseUrlForRSSReq(originalUrl, pageParam) {
return url.parse(originalUrl).pathname.replace(new RegExp('/' + pageParam + '/$'), '/');
}
// @TODO: is this really correct? Should we be using meta data title?
function getTitle(relatedData) {
relatedData = relatedData || {};
var titleStart = _.get(relatedData, 'author[0].name') || _.get(relatedData, 'tag[0].name') || '';
titleStart += titleStart ? ' - ' : '';
return titleStart + settingsCache.get('title');
}
// @TODO: merge this with the rest of the data processing for RSS
// @TODO: swap the fetchData call + duplicate code from channels with something DRY
function getData(channelOpts) {
channelOpts.data = channelOpts.data || {};
return fetchData(channelOpts).then(function formatResult(result) {
var response = _.pick(result, ['posts', 'meta']);
response.title = getTitle(result.data);
response.description = settingsCache.get('description');
return response;
});
}
// This here is a controller.
// The "route" is handled in services/channels/router.js
// We can only generate RSS for channels, so that sorta makes sense, but the location is rubbish
// @TODO finish refactoring this - it's now a controller
generate = function generate(req, res, next) {
// Parse the parameters we need from the URL
var pageParam = req.params.page !== undefined ? req.params.page : 1,
slugParam = req.params.slug ? safeString(req.params.slug) : undefined,
// Base URL needs to be the URL for the feed without pagination:
baseUrl = getBaseUrlForRSSReq(req.originalUrl, pageParam);
// @TODO: fix this, we shouldn't change the channel object!
// Set page on postOptions for the query made later
res.locals.channel.postOptions.page = pageParam;
res.locals.channel.slugParam = slugParam;
return getData(res.locals.channel).then(function handleResult(data) {
// If page is greater than number of pages we have, go straight to 404
if (pageParam > data.meta.pagination.pages) {
return next(new errors.NotFoundError({message: i18n.t('errors.errors.pageNotFound')}));
}
// Render call - to a special RSS renderer
return rssService.render(res, baseUrl, data);
}).catch(handleError(next));
};
module.exports = generate;