Ghost/core/frontend/helpers/is.js

30 lines
801 B
JavaScript

// # Is Helper
// Usage: `{{#is "paged"}}`, `{{#is "index, paged"}}`
// Checks whether we're in a given context.
const {logging, i18n} = require('../services/proxy');
const _ = require('lodash');
module.exports = function is(context, options) {
options = options || {};
const 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);
};