Ghost/core/server/api/index.js

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// # Ghost Data API
// Provides access to the data model
var _ = require('underscore'),
when = require('when'),
config = require('../config'),
errors = require('../errorHandling'),
db = require('./db'),
settings = require('./settings'),
notifications = require('./notifications'),
posts = require('./posts'),
users = require('./users'),
tags = require('./tags'),
requestHandler,
init;
// ## Request Handlers
function cacheInvalidationHeader(req, result) {
var parsedUrl = req._parsedUrl.pathname.replace(/\/$/, '').split('/'),
method = req.method,
endpoint = parsedUrl[4],
id = parsedUrl[5],
cacheInvalidate,
jsonResult = result.toJSON ? result.toJSON() : result;
if (method === 'POST' || method === 'PUT' || method === 'DELETE') {
if (endpoint === 'settings' || endpoint === 'users' || endpoint === 'db') {
cacheInvalidate = "/*";
} else if (endpoint === 'posts') {
cacheInvalidate = "/, /page/*, /rss/, /rss/*";
if (id && jsonResult.slug) {
return config.paths.urlForPost(settings, jsonResult).then(function (postUrl) {
return cacheInvalidate + ', ' + postUrl;
});
}
}
}
return when(cacheInvalidate);
}
// ### requestHandler
// decorator for api functions which are called via an HTTP request
// takes the API method and wraps it so that it gets data from the request and returns a sensible JSON response
requestHandler = function (apiMethod) {
return function (req, res) {
var options = _.extend(req.body, req.files, req.query, req.params),
apiContext = {
user: req.session && req.session.user
};
return apiMethod.call(apiContext, options).then(function (result) {
res.json(result || {});
return cacheInvalidationHeader(req, result).then(function (header) {
if (header) {
res.set({
"X-Cache-Invalidate": header
});
}
});
}, function (error) {
var errorCode = error.errorCode || 500,
errorMsg = {error: _.isString(error) ? error : (_.isObject(error) ? error.message : 'Unknown API Error')};
res.json(errorCode, errorMsg);
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});
};
};
init = function () {
return settings.updateSettingsCache();
};
// Public API
module.exports = {
posts: posts,
users: users,
tags: tags,
notifications: notifications,
settings: settings,
db: db,
requestHandler: requestHandler,
init: init
};