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b6b2930d15
refs #8703 - Always always call cb() even if we get an error! - Ensure the error is handled, and converted to a GhostError if not already - If we're in development mode, render the error. Else render nothing.
41 lines
1.5 KiB
JavaScript
41 lines
1.5 KiB
JavaScript
var hbs = require('../themes/engine'),
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Promise = require('bluebird'),
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config = require('../config'),
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errors = require('../errors'),
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logging = require('../logging');
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// Register an async handlebars helper for a given handlebars instance
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function asyncHelperWrapper(hbs, name, fn) {
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hbs.registerAsyncHelper(name, function returnAsync(context, options, cb) {
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// Handle the case where we only get context and cb
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if (!cb) {
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cb = options;
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options = undefined;
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}
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// Wrap the function passed in with a when.resolve so it can return either a promise or a value
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Promise.resolve(fn.call(this, context, options)).then(function asyncHelperSuccess(result) {
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cb(result);
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}).catch(function asyncHelperError(err) {
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var wrappedErr = err instanceof errors.GhostError ? err : new errors.IncorrectUsageError({
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err: err,
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context: 'registerAsyncThemeHelper: ' + name
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}),
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result = config.get('env') === 'development' ? wrappedErr : '';
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logging.error(wrappedErr);
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cb(new hbs.SafeString(result));
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});
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});
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}
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// Register a handlebars helper for themes
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module.exports.registerThemeHelper = function registerThemeHelper(name, fn) {
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hbs.registerHelper(name, fn);
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};
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// Register an async handlebars helper for themes
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module.exports.registerAsyncThemeHelper = function registerAsyncThemeHelper(name, fn) {
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asyncHelperWrapper(hbs, name, fn);
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};
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