Ghost/core/server/services/labs.js

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var settingsCache = require('./settings/cache'),
_ = require('lodash'),
Promise = require('bluebird'),
SafeString = require('./themes/engine').SafeString,
common = require('../lib/common'),
labs = module.exports = {};
labs.isSet = function isSet(flag) {
var labsConfig = settingsCache.get('labs');
return labsConfig && labsConfig[flag] && labsConfig[flag] === true;
};
labs.enabledHelper = function enabledHelper(options, callback) {
var errDetails, errString;
if (labs.isSet(options.flagKey) === true) {
// helper is active, use the callback
return callback();
}
// Else, the helper is not active and we need to handle this as an error
errDetails = {
message: common.i18n.t('warnings.helpers.helperNotAvailable', {helperName: options.helperName}),
context: common.i18n.t('warnings.helpers.flagMustBeEnabled', {
helperName: options.helperName,
flagName: options.flagName
}),
help: common.i18n.t('warnings.helpers.seeLink', {url: options.helpUrl})
};
common.logging.error(new common.errors.DisabledFeatureError(errDetails));
errString = new SafeString(
'<script>console.error("' + _.values(errDetails).join(' ') + '");</script>'
);
if (options.async) {
return Promise.resolve(function asyncError() {
return errString;
});
}
return errString;
};