40 lines
908 B
JavaScript
40 lines
908 B
JavaScript
import {
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appendContextPath,
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blockParams,
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createFrame,
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isEmpty,
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isFunction
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} from '../utils';
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import Exception from '../exception';
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export default function(instance) {
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instance.registerHelper('with', function(context, options) {
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if (arguments.length != 2) {
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throw new Exception('#with requires exactly one argument');
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}
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if (isFunction(context)) {
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context = context.call(this);
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}
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let fn = options.fn;
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if (!isEmpty(context)) {
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let data = options.data;
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if (options.data && options.ids) {
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data = createFrame(options.data);
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data.contextPath = appendContextPath(
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options.data.contextPath,
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options.ids[0]
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);
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}
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return fn(context, {
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data: data,
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blockParams: blockParams([context], [data && data.contextPath])
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});
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} else {
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return options.inverse(this);
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}
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});
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}
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