Ghost/core/server/helpers/is.js
Hannah Wolfe 243b387063 Helper Proxy & single express-hbs instance (#8225)
refs #8126, #8221, #8223

 New 'Proxy' for all helper requires
- this is not currently enforced, but could be, much like apps
- the proxy object is HUGE
- changed date to use SafeString, this should have been there anyway
- use the proxy for all helpers, including those in apps 😁

 🎨 Single instance of hbs for theme + for errors
- we now have theme/engine instead of requiring express-hbs everywhere
- only error-handler still also requires express-hbs, this is so that we can render errors without extra crud
- TODO: remove the asset helper after #8126 IF it is not needed, or else remove the TODO

🎨 Cleanup visibility utils
🎨 Clean up the proxy a little bit
🚨 Unskip test as it now works!
🎨 Minor amends as per comments
2017-04-04 18:07:35 +02:00

33 lines
828 B
JavaScript

// # Is Helper
// Usage: `{{#is "paged"}}`, `{{#is "index, paged"}}`
// Checks whether we're in a given context.
var proxy = require('./proxy'),
_ = require('lodash'),
logging = proxy.logging,
i18n = proxy.i18n;
module.exports = function is(context, options) {
options = options || {};
var currentContext = options.data.root.context;
if (!_.isString(context)) {
logging.warn(i18n.t('warnings.helpers.is.invalidAttribute'));
return;
}
function evaluateContext(expr) {
return expr.split(',').map(function (v) {
return v.trim();
}).reduce(function (p, c) {
return p || _.includes(currentContext, c);
}, false);
}
if (evaluateContext(context)) {
return options.fn(this);
}
return options.inverse(this);
};