35 lines
905 B
JavaScript
35 lines
905 B
JavaScript
// # Is Helper
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// Usage: `{{#is "paged"}}`, `{{#is "index, paged"}}`
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// Checks whether we're in a given context.
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const logging = require('@tryghost/logging');
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const tpl = require('@tryghost/tpl');
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const _ = require('lodash');
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const messages = {
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invalidAttribute: 'Invalid or no attribute given to is helper'
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};
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module.exports = function is(context, options) {
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options = options || {};
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const currentContext = options.data.root.context;
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if (!_.isString(context)) {
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logging.warn(tpl(messages.invalidAttribute));
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return;
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}
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function evaluateContext(expr) {
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return expr.split(',').map(function (v) {
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return v.trim();
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}).reduce(function (p, c) {
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return p || _.includes(currentContext, c);
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}, false);
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}
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if (evaluateContext(context)) {
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return options.fn(this);
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}
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return options.inverse(this);
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};
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