Ghost/core/server/controllers/frontend.js

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/**
* Main controller for Ghost frontend
*/
/*global require, module */
var config = require('../config'),
api = require('../api'),
RSS = require('rss'),
_ = require('underscore'),
errors = require('../errorHandling'),
when = require('when'),
url = require('url'),
filters = require('../../server/filters'),
coreHelpers = require('../helpers'),
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frontendControllers;
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frontendControllers = {
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'homepage': function (req, res, next) {
// Parse the page number
var pageParam = req.params.page !== undefined ? parseInt(req.params.page, 10) : 1,
postsPerPage,
options = {};
api.settings.read('postsPerPage').then(function (postPP) {
postsPerPage = parseInt(postPP.value, 10);
// No negative pages
if (isNaN(pageParam) || pageParam < 1) {
//redirect to 404 page?
return res.redirect('/');
}
options.page = pageParam;
// Redirect '/page/1/' to '/' for all teh good SEO
if (pageParam === 1 && req.route.path === '/page/:page/') {
return res.redirect(config.paths().subdir + '/');
}
// No negative posts per page, must be number
if (!isNaN(postsPerPage) && postsPerPage > 0) {
options.limit = postsPerPage;
}
return;
}).then(function () {
return api.posts.browse(options);
}).then(function (page) {
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var maxPage = page.pages;
// A bit of a hack for situations with no content.
if (maxPage === 0) {
maxPage = 1;
page.pages = 1;
}
// If page is greater than number of pages we have, redirect to last page
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if (pageParam > maxPage) {
return res.redirect(maxPage === 1 ? config.paths().subdir + '/' : (config.paths().subdir + '/page/' + maxPage + '/'));
}
// Render the page of posts
filters.doFilter('prePostsRender', page.posts).then(function (posts) {
res.render('index', {posts: posts, pagination: {page: page.page, prev: page.prev, next: page.next, limit: page.limit, total: page.total, pages: page.pages}});
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});
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}).otherwise(function (err) {
var e = new Error(err.message);
e.status = err.errorCode;
return next(e);
});
},
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'single': function (req, res, next) {
// From route check if a date was parsed
// from the regex
var dateInSlug = req.params[0] !== '';
when.join(
api.settings.read('permalinks'),
api.posts.read({slug: req.params[1]})
).then(function (promises) {
var permalink = promises[0].value,
post = promises[1];
function render() {
filters.doFilter('prePostsRender', post).then(function (post) {
api.settings.read('activeTheme').then(function (activeTheme) {
var paths = config.paths().availableThemes[activeTheme.value],
view = post.page && paths.hasOwnProperty('page') ? 'page' : 'post';
res.render(view, {post: post});
});
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});
}
if (!post) {
return next();
}
// A page can only be rendered when there is no date in the url.
// A post can either be rendered with a date in the url
// depending on the permalink setting.
// For all other conditions return 404.
if (post.page === 1 && dateInSlug === false) {
return render();
}
if (post.page === 0) {
// Handle post rendering
if ((permalink === '/:slug/' && dateInSlug === false) ||
(permalink !== '/:slug/' && dateInSlug === true)) {
return render();
}
}
next();
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}).otherwise(function (err) {
var e = new Error(err.message);
e.status = err.errorCode;
return next(e);
});
},
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'rss': function (req, res, next) {
// Initialize RSS
var siteUrl = config().url,
pageParam = req.params.page !== undefined ? parseInt(req.params.page, 10) : 1,
feed;
//needs refact for multi user to not use first user as default
when.settle([
api.users.read({id : 1}),
api.settings.read('title'),
api.settings.read('description')
]).then(function (result) {
var user = result[0].value,
title = result[1].value.value,
description = result[2].value.value;
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feed = new RSS({
title: title,
description: description,
generator: 'Ghost v' + res.locals.version,
author: user ? user.name : null,
feed_url: url.resolve(siteUrl, '/rss/'),
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site_url: siteUrl,
ttl: '60'
});
// No negative pages
if (isNaN(pageParam) || pageParam < 1) {
return res.redirect(config.paths().subdir + '/rss/');
}
if (pageParam === 1 && req.route.path === config.paths().subdir + '/rss/:page/') {
return res.redirect(config.paths().subdir + '/rss/');
}
api.posts.browse({page: pageParam}).then(function (page) {
var maxPage = page.pages,
feedItems = [];
// A bit of a hack for situations with no content.
if (maxPage === 0) {
maxPage = 1;
page.pages = 1;
}
// If page is greater than number of pages we have, redirect to last page
if (pageParam > maxPage) {
return res.redirect(config.paths().subdir + '/rss/' + maxPage + '/');
}
filters.doFilter('prePostsRender', page.posts).then(function (posts) {
posts.forEach(function (post) {
var deferred = when.defer();
post.url = coreHelpers.url;
post.url().then(function (postUrl) {
var item = {
title: _.escape(post.title),
guid: post.uuid,
url: siteUrl + postUrl,
date: post.published_at,
categories: _.pluck(post.tags, 'name')
},
content = post.html;
//set img src to absolute url
content = content.replace(/src=["|'|\s]?([\w\/\?\$\.\+\-;%:@&=,_]+)["|'|\s]?/gi, function (match, p1) {
/*jslint unparam:true*/
p1 = url.resolve(siteUrl, p1);
return "src='" + p1 + "' ";
});
//set a href to absolute url
content = content.replace(/href=["|'|\s]?([\w\/\?\$\.\+\-;%:@&=,_]+)["|'|\s]?/gi, function (match, p1) {
/*jslint unparam:true*/
p1 = url.resolve(siteUrl, p1);
return "href='" + p1 + "' ";
});
item.description = content;
feed.item(item);
deferred.resolve();
});
feedItems.push(deferred.promise);
});
});
when.all(feedItems).then(function () {
res.set('Content-Type', 'text/xml');
res.send(feed.xml());
});
});
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}).otherwise(function (err) {
var e = new Error(err.message);
e.status = err.errorCode;
return next(e);
});
}
};
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module.exports = frontendControllers;