mirror of
https://github.com/TryGhost/Ghost.git
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623 lines
22 KiB
JavaScript
623 lines
22 KiB
JavaScript
/**
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* Main controller for Ghost frontend
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*/
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/*global require, module */
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var moment = require('moment'),
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RSS = require('rss'),
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_ = require('lodash'),
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url = require('url'),
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Promise = require('bluebird'),
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api = require('../api'),
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config = require('../config'),
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filters = require('../filters'),
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template = require('../helpers/template'),
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errors = require('../errors'),
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cheerio = require('cheerio'),
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routeMatch = require('path-match')(),
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frontendControllers,
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staticPostPermalink,
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// Cache static post permalink regex
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staticPostPermalink = routeMatch('/:slug/:edit?');
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function getPostPage(options) {
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return api.settings.read('postsPerPage').then(function (response) {
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var postPP = response.settings[0],
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postsPerPage = parseInt(postPP.value, 10);
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// No negative posts per page, must be number
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if (!isNaN(postsPerPage) && postsPerPage > 0) {
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options.limit = postsPerPage;
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}
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options.include = 'author,tags,fields';
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return api.posts.browse(options);
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});
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}
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/**
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* returns a promise with an array of values used in {{navigation}}
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* TODO(nsfmc): should this be in the 'prePostsRender' pipeline?
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* @return {Promise} containing an array of navigation items
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*/
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function getSiteNavigation() {
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return Promise.resolve(api.settings.read('navigation')).then(function (result) {
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if (result && result.settings && result.settings.length) {
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return JSON.parse(result.settings[0].value) || [];
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}
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return [];
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});
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}
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/**
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* formats variables for handlebars in multi-post contexts.
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* If extraValues are available, they are merged in the final value
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* TODO(nsfmc): should this be in the 'prePostsRender' pipeline?
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* @return {Promise} containing page variables
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*/
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function formatPageResponse(posts, page, extraValues) {
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// Delete email from author for frontend output
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// TODO: do this on API level if no context is available
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posts = _.each(posts, function (post) {
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if (post.author) {
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delete post.author.email;
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}
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return post;
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});
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extraValues = extraValues || {};
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return getSiteNavigation().then(function (navigation) {
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var resp = {
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posts: posts,
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pagination: page.meta.pagination,
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navigation: navigation || {}
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};
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return _.extend(resp, extraValues);
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});
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}
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/**
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* similar to formatPageResponse, but for single post pages
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* TODO(nsfmc): should this be in the 'prePostsRender' pipeline?
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* @return {Promise} containing page variables
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*/
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function formatResponse(post) {
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// Delete email from author for frontend output
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// TODO: do this on API level if no context is available
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if (post.author) {
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delete post.author.email;
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}
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return getSiteNavigation().then(function (navigation) {
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return {
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post: post,
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navigation: navigation
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};
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});
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}
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function handleError(next) {
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return function (err) {
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return next(err);
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};
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}
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function setResponseContext(req, res, data) {
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var contexts = [],
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pageParam = req.params.page !== undefined ? parseInt(req.params.page, 10) : 1;
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// paged context
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if (!isNaN(pageParam) && pageParam > 1) {
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contexts.push('paged');
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}
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if (req.route.path === '/page/:page/') {
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contexts.push('index');
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} else if (req.route.path === '/') {
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contexts.push('home');
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contexts.push('index');
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} else if (/\/rss\/(:page\/)?$/.test(req.route.path)) {
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contexts.push('rss');
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} else if (/^\/tag\//.test(req.route.path)) {
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contexts.push('tag');
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} else if (/^\/author\//.test(req.route.path)) {
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contexts.push('author');
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} else if (data && data.post && data.post.page) {
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contexts.push('page');
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} else {
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contexts.push('post');
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}
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res.locals.context = contexts;
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}
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// Add Request context parameter to the data object
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// to be passed down to the templates
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function setReqCtx(req, data) {
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(Array.isArray(data) ? data : [data]).forEach(function (d) {
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d.secure = req.secure;
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});
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}
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/**
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* Returns the paths object of the active theme via way of a promise.
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* @return {Promise} The promise resolves with the value of the paths.
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*/
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function getActiveThemePaths() {
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return api.settings.read({
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key: 'activeTheme',
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context: {
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internal: true
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}
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}).then(function (response) {
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var activeTheme = response.settings[0],
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paths = config.paths.availableThemes[activeTheme.value];
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return paths;
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});
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}
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frontendControllers = {
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homepage: function (req, res, next) {
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// Parse the page number
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var pageParam = req.params.page !== undefined ? parseInt(req.params.page, 10) : 1,
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options = {
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page: pageParam
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};
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// No negative pages, or page 1
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if (isNaN(pageParam) || pageParam < 1 || (pageParam === 1 && req.route.path === '/page/:page/')) {
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return res.redirect(config.paths.subdir + '/');
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}
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return getPostPage(options).then(function (page) {
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// If page is greater than number of pages we have, redirect to last page
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if (pageParam > page.meta.pagination.pages) {
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return res.redirect(page.meta.pagination.pages === 1 ? config.paths.subdir + '/' : (config.paths.subdir + '/page/' + page.meta.pagination.pages + '/'));
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}
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setReqCtx(req, page.posts);
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// Render the page of posts
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filters.doFilter('prePostsRender', page.posts).then(function (posts) {
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getActiveThemePaths().then(function (paths) {
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var view = paths.hasOwnProperty('home.hbs') ? 'home' : 'index';
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// If we're on a page then we always render the index
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// template.
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if (pageParam > 1) {
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view = 'index';
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}
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setResponseContext(req, res);
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formatPageResponse(posts, page).then(function (result) {
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res.render(view, result);
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});
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});
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});
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}).catch(handleError(next));
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},
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tag: function (req, res, next) {
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// Parse the page number
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var pageParam = req.params.page !== undefined ? parseInt(req.params.page, 10) : 1,
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options = {
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page: pageParam,
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tag: req.params.slug
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};
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// Get url for tag page
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function tagUrl(tag, page) {
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var url = config.paths.subdir + '/tag/' + tag + '/';
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if (page && page > 1) {
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url += 'page/' + page + '/';
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}
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return url;
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}
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// No negative pages, or page 1
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if (isNaN(pageParam) || pageParam < 1 || (req.params.page !== undefined && pageParam === 1)) {
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return res.redirect(tagUrl(options.tag));
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}
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return getPostPage(options).then(function (page) {
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// If page is greater than number of pages we have, redirect to last page
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if (pageParam > page.meta.pagination.pages) {
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return res.redirect(tagUrl(options.tag, page.meta.pagination.pages));
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}
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setReqCtx(req, page.posts);
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if (page.meta.filters.tags) {
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setReqCtx(req, page.meta.filters.tags[0]);
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}
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// Render the page of posts
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filters.doFilter('prePostsRender', page.posts).then(function (posts) {
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getActiveThemePaths().then(function (paths) {
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var view = template.getThemeViewForTag(paths, options.tag);
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// Format data for template
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formatPageResponse(posts, page, {
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tag: page.meta.filters.tags ? page.meta.filters.tags[0] : ''
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}).then(function (result) {
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// If the resulting tag is '' then 404.
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if (!result.tag) {
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return next();
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}
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setResponseContext(req, res);
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res.render(view, result);
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});
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});
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});
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}).catch(handleError(next));
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},
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author: function (req, res, next) {
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// Parse the page number
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var pageParam = req.params.page !== undefined ? parseInt(req.params.page, 10) : 1,
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options = {
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page: pageParam,
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author: req.params.slug
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};
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// Get url for tag page
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function authorUrl(author, page) {
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var url = config.paths.subdir + '/author/' + author + '/';
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if (page && page > 1) {
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url += 'page/' + page + '/';
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}
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return url;
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}
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// No negative pages, or page 1
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if (isNaN(pageParam) || pageParam < 1 || (req.params.page !== undefined && pageParam === 1)) {
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return res.redirect(authorUrl(options.author));
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}
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return getPostPage(options).then(function (page) {
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// If page is greater than number of pages we have, redirect to last page
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if (pageParam > page.meta.pagination.pages) {
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return res.redirect(authorUrl(options.author, page.meta.pagination.pages));
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}
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setReqCtx(req, page.posts);
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if (page.meta.filters.author) {
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setReqCtx(req, page.meta.filters.author);
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}
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// Render the page of posts
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filters.doFilter('prePostsRender', page.posts).then(function (posts) {
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getActiveThemePaths().then(function (paths) {
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var view = paths.hasOwnProperty('author.hbs') ? 'author' : 'index';
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// Format data for template
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formatPageResponse(posts, page, {
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author: page.meta.filters.author ? page.meta.filters.author : ''
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}).then(function (result) {
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// If the resulting author is '' then 404.
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if (!result.author) {
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return next();
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}
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setResponseContext(req, res);
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res.render(view, result);
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});
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});
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});
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}).catch(handleError(next));
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},
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single: function (req, res, next) {
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var path = req.path,
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params,
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usingStaticPermalink = false;
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api.settings.read('permalinks').then(function (response) {
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var permalink = response.settings[0],
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editFormat,
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postLookup,
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match;
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editFormat = permalink.value[permalink.value.length - 1] === '/' ? ':edit?' : '/:edit?';
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// Convert saved permalink into a path-match function
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permalink = routeMatch(permalink.value + editFormat);
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match = permalink(path);
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// Check if the path matches the permalink structure.
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//
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// If there are no matches found we then
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// need to verify it's not a static post,
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// and test against that permalink structure.
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if (match === false) {
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match = staticPostPermalink(path);
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// If there are still no matches then return.
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if (match === false) {
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// Reject promise chain with type 'NotFound'
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return Promise.reject(new errors.NotFoundError());
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}
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usingStaticPermalink = true;
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}
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params = match;
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// Sanitize params we're going to use to lookup the post.
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postLookup = _.pick(params, 'slug', 'id');
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// Add author, tag and fields
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postLookup.include = 'author,tags,fields';
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// Query database to find post
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return api.posts.read(postLookup);
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}).then(function (result) {
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var post = result.posts[0],
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slugDate = [],
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slugFormat = [];
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if (!post) {
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return next();
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}
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function render() {
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// If we're ready to render the page but the last param is 'edit' then we'll send you to the edit page.
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if (params.edit) {
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params.edit = params.edit.toLowerCase();
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}
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if (params.edit === 'edit') {
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return res.redirect(config.paths.subdir + '/ghost/editor/' + post.id + '/');
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} else if (params.edit !== undefined) {
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// reject with type: 'NotFound'
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return Promise.reject(new errors.NotFoundError());
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}
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setReqCtx(req, post);
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filters.doFilter('prePostsRender', post).then(function (post) {
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getActiveThemePaths().then(function (paths) {
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var view = template.getThemeViewForPost(paths, post);
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return formatResponse(post).then(function (response) {
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setResponseContext(req, res, response);
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res.render(view, response);
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});
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});
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});
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}
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// If we've checked the path with the static permalink structure
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// then the post must be a static post.
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// If it is not then we must return.
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if (usingStaticPermalink) {
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if (post.page) {
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return render();
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}
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return next();
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}
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// If there is an author parameter in the slug, check that the
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// post is actually written by the given author\
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if (params.author) {
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if (post.author.slug === params.author) {
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return render();
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}
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return next();
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}
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// If there is any date based paramter in the slug
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// we will check it against the post published date
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// to verify it's correct.
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if (params.year || params.month || params.day) {
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if (params.year) {
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slugDate.push(params.year);
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slugFormat.push('YYYY');
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}
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if (params.month) {
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slugDate.push(params.month);
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slugFormat.push('MM');
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}
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if (params.day) {
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slugDate.push(params.day);
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slugFormat.push('DD');
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}
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slugDate = slugDate.join('/');
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slugFormat = slugFormat.join('/');
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if (slugDate === moment(post.published_at).format(slugFormat)) {
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return render();
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}
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return next();
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}
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return render();
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}).catch(function (err) {
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// If we've thrown an error message
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// of type: 'NotFound' then we found
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// no path match.
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if (err.type === 'NotFoundError') {
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return next();
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}
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return handleError(next)(err);
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});
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},
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rss: function (req, res, next) {
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function isPaginated() {
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return req.route.path.indexOf(':page') !== -1;
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}
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function isTag() {
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return req.route.path.indexOf('/tag/') !== -1;
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}
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function isAuthor() {
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return req.route.path.indexOf('/author/') !== -1;
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}
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// Initialize RSS
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var pageParam = req.params.page !== undefined ? parseInt(req.params.page, 10) : 1,
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slugParam = req.params.slug,
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baseUrl = config.paths.subdir;
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if (isTag()) {
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baseUrl += '/tag/' + slugParam + '/rss/';
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} else if (isAuthor()) {
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baseUrl += '/author/' + slugParam + '/rss/';
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} else {
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baseUrl += '/rss/';
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}
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// No negative pages, or page 1
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if (isNaN(pageParam) || pageParam < 1 || (pageParam === 1 && isPaginated())) {
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return res.redirect(baseUrl);
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}
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return Promise.all([
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api.settings.read('title'),
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api.settings.read('description'),
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api.settings.read('permalinks')
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]).then(function (result) {
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var options = {};
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if (pageParam) { options.page = pageParam; }
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if (isTag()) { options.tag = slugParam; }
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if (isAuthor()) { options.author = slugParam; }
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options.include = 'author,tags,fields';
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return api.posts.browse(options).then(function (page) {
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var title = result[0].settings[0].value,
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description = result[1].settings[0].value,
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permalinks = result[2].settings[0],
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majorMinor = /^(\d+\.)?(\d+)/,
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trimmedVersion = res.locals.version,
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siteUrl = config.urlFor('home', {secure: req.secure}, true),
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feedUrl = config.urlFor('rss', {secure: req.secure}, true),
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maxPage = page.meta.pagination.pages,
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feed;
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trimmedVersion = trimmedVersion ? trimmedVersion.match(majorMinor)[0] : '?';
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if (isTag()) {
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if (page.meta.filters.tags) {
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title = page.meta.filters.tags[0].name + ' - ' + title;
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feedUrl = siteUrl + 'tag/' + page.meta.filters.tags[0].slug + '/rss/';
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}
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}
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if (isAuthor()) {
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if (page.meta.filters.author) {
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title = page.meta.filters.author.name + ' - ' + title;
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feedUrl = siteUrl + 'author/' + page.meta.filters.author.slug + '/rss/';
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}
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}
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feed = new RSS({
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title: title,
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description: description,
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generator: 'Ghost ' + trimmedVersion,
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feed_url: feedUrl,
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site_url: siteUrl,
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ttl: '60'
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});
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|
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// If page is greater than number of pages we have, redirect to last page
|
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if (pageParam > maxPage) {
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return res.redirect(baseUrl + maxPage + '/');
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}
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setReqCtx(req, page.posts);
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setResponseContext(req, res);
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filters.doFilter('prePostsRender', page.posts).then(function (posts) {
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posts.forEach(function (post) {
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var item = {
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title: post.title,
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guid: post.uuid,
|
|
url: config.urlFor('post', {post: post, permalinks: permalinks}, true),
|
|
date: post.published_at,
|
|
categories: _.pluck(post.tags, 'name'),
|
|
author: post.author ? post.author.name : null
|
|
},
|
|
htmlContent = cheerio.load(post.html, {decodeEntities: false});
|
|
|
|
if (post.image) {
|
|
htmlContent('p').first().before('<img src="' + post.image + '" />');
|
|
htmlContent('img').attr('alt', post.title);
|
|
}
|
|
|
|
// convert relative resource urls to absolute
|
|
['href', 'src'].forEach(function (attributeName) {
|
|
htmlContent('[' + attributeName + ']').each(function (ix, el) {
|
|
var baseUrl,
|
|
attributeValue,
|
|
parsed;
|
|
|
|
el = htmlContent(el);
|
|
|
|
attributeValue = el.attr(attributeName);
|
|
|
|
// if URL is absolute move on to the next element
|
|
try {
|
|
parsed = url.parse(attributeValue);
|
|
|
|
if (parsed.protocol) {
|
|
return;
|
|
}
|
|
} catch (e) {
|
|
return;
|
|
}
|
|
|
|
// compose an absolute URL
|
|
|
|
// if the relative URL begins with a '/' use the blog URL (including sub-directory)
|
|
// as the base URL, otherwise use the post's URL.
|
|
baseUrl = attributeValue[0] === '/' ? siteUrl : item.url;
|
|
|
|
// prevent double slashes
|
|
if (baseUrl.slice(-1) === '/' && attributeValue[0] === '/') {
|
|
attributeValue = attributeValue.substr(1);
|
|
}
|
|
|
|
// make sure URL has a trailing slash
|
|
try {
|
|
parsed = url.parse(attributeValue);
|
|
|
|
if (parsed.pathname && parsed.pathname.slice(-1) !== '/') {
|
|
parsed.pathname += '/';
|
|
|
|
attributeValue = url.format(parsed);
|
|
}
|
|
} catch (e) {
|
|
// if the URL we've built cannot be parsed, fall back to the unprocessed URL
|
|
return;
|
|
}
|
|
|
|
attributeValue = baseUrl + attributeValue;
|
|
el.attr(attributeName, attributeValue);
|
|
});
|
|
});
|
|
|
|
item.description = htmlContent.html();
|
|
feed.item(item);
|
|
});
|
|
}).then(function () {
|
|
res.set('Content-Type', 'application/rss+xml; charset=UTF-8');
|
|
res.send(feed.xml());
|
|
});
|
|
});
|
|
}).catch(handleError(next));
|
|
}
|
|
};
|
|
|
|
module.exports = frontendControllers;
|