Ghost/core/frontend/services/themes/middleware.js
Naz Gargol df7e64fafa
Extracted frontend folder (#10780)
refs #10790

- Moved /core/apps into core/frontend
- Moved /core/server/helpers to /core/frontend/helpers along with /core/server/services/themes
- Changed helper location in overrides
- Moved /core/server/services/routing to /core/frontend/services
- Moved /core/server/services/url to /core/frontend/services
- Moved /core/server/data/meta to /core/frontend/meta
- Moved /core/server/services/rss to /core/frontend/services
- Moved /core/server/data/xml to /core/frontend/services
2019-06-19 11:30:28 +02:00

98 lines
3.6 KiB
JavaScript

const _ = require('lodash');
const hbs = require('./engine');
const urlUtils = require('../../../server/lib/url-utils');
const config = require('../../../server/config');
const common = require('../../../server/lib/common');
const settingsCache = require('../../../server/services/settings/cache');
const activeTheme = require('./active');
// ### Ensure Active Theme
// Ensure there's a properly set & mounted active theme before attempting to serve a blog request
// If there is no active theme, throw an error
// Else, ensure the active theme is mounted
function ensureActiveTheme(req, res, next) {
// CASE: this means that the theme hasn't been loaded yet i.e. there is no active theme
if (!activeTheme.get()) {
// This is the one place we ACTUALLY throw an error for a missing theme as it's a request we cannot serve
return next(new common.errors.InternalServerError({
// We use the settingsCache here, because the setting will be set,
// even if the theme itself is not usable because it is invalid or missing.
message: common.i18n.t('errors.middleware.themehandler.missingTheme', {theme: settingsCache.get('active_theme')})
}));
}
// CASE: bootstrap theme validation failed, we would like to show the errors on the blog [only production]
if (activeTheme.get().error && config.get('env') === 'production') {
return next(new common.errors.InternalServerError({
// We use the settingsCache here, because the setting will be set,
// even if the theme itself is not usable because it is invalid or missing.
message: common.i18n.t('errors.middleware.themehandler.invalidTheme', {theme: settingsCache.get('active_theme')}),
errorDetails: activeTheme.get().error.errorDetails
}));
}
// If the active theme has not yet been mounted, mount it into express
if (!activeTheme.get().mounted) {
activeTheme.get().mount(req.app);
}
next();
}
function updateGlobalTemplateOptions(req, res, next) {
// Static information, same for every request unless the settings change
// @TODO: bind this once and then update based on events?
// @TODO: decouple theme layer from settings cache using the Content API
const siteData = settingsCache.getPublic();
const labsData = _.cloneDeep(settingsCache.get('labs'));
const themeData = {
posts_per_page: activeTheme.get().config('posts_per_page'),
image_sizes: activeTheme.get().config('image_sizes')
};
// @TODO: only do this if something changed?
// @TODO: remove blog if we drop v0.1 (Ghost 3.0)
hbs.updateTemplateOptions({
data: {
blog: siteData,
site: siteData,
labs: labsData,
config: themeData
}
});
next();
}
function updateLocalTemplateData(req, res, next) {
// Pass 'secure' flag to the view engine
// so that templates can choose to render https or http 'url', see url utility
res.locals.secure = req.secure;
next();
}
function updateLocalTemplateOptions(req, res, next) {
const localTemplateOptions = hbs.getLocalTemplateOptions(res.locals);
const siteData = {
url: urlUtils.urlFor('home', {secure: req.secure, trailingSlash: false}, true)
};
hbs.updateLocalTemplateOptions(res.locals, _.merge({}, localTemplateOptions, {
data: {
member: req.member,
site: siteData,
blog: siteData
}
}));
next();
}
module.exports = [
ensureActiveTheme,
updateGlobalTemplateOptions,
updateLocalTemplateData,
updateLocalTemplateOptions
];