47 lines
1.4 KiB
JavaScript
47 lines
1.4 KiB
JavaScript
// # Excerpt Helper
|
|
// Usage: `{{excerpt}}`, `{{excerpt words="50"}}`, `{{excerpt characters="256"}}`
|
|
//
|
|
// Attempts to remove all HTML from the string, and then shortens the result according to the provided option.
|
|
//
|
|
// Defaults to words="50"
|
|
|
|
const {SafeString} = require('../services/handlebars');
|
|
const {metaData} = require('../services/proxy');
|
|
const _ = require('lodash');
|
|
const getMetaDataExcerpt = metaData.getMetaDataExcerpt;
|
|
|
|
module.exports = function excerpt(options) {
|
|
let truncateOptions = (options || {}).hash || {};
|
|
|
|
let excerptText;
|
|
|
|
if (this.custom_excerpt) {
|
|
excerptText = String(this.custom_excerpt);
|
|
} else if (this.excerpt) {
|
|
excerptText = String(this.excerpt);
|
|
} else {
|
|
excerptText = '';
|
|
}
|
|
|
|
excerptText = _.escape(excerptText);
|
|
|
|
truncateOptions = _.reduce(truncateOptions, (_truncateOptions, value, key) => {
|
|
if (['words', 'characters'].includes(key)) {
|
|
_truncateOptions[key] = parseInt(value, 10);
|
|
}
|
|
return _truncateOptions;
|
|
}, {});
|
|
|
|
// For custom excerpts, make sure we truncate them only based on length
|
|
if (!_.isEmpty(this.custom_excerpt)) {
|
|
truncateOptions.characters = excerptText.length; // length is expanded by use of escaped characters
|
|
if (truncateOptions.words) {
|
|
delete truncateOptions.words;
|
|
}
|
|
}
|
|
|
|
return new SafeString(
|
|
getMetaDataExcerpt(excerptText, truncateOptions)
|
|
);
|
|
};
|