Ghost/core/server/helpers/is.js

34 lines
861 B
JavaScript
Raw Normal View History

// # Is Helper
// Usage: `{{#is "paged"}}`, `{{#is "index, paged"}}`
// Checks whether we're in a given context.
var _ = require('lodash'),
errors = require('../errors'),
i18n = require('../i18n'),
is;
is = function (context, options) {
options = options || {};
var currentContext = options.data.root.context;
if (!_.isString(context)) {
errors.logWarn(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 || _.contains(currentContext, c);
}, false);
}
if (evaluateContext(context)) {
return options.fn(this);
}
return options.inverse(this);
};
module.exports = is;