Ghost/core/server/helpers/has.js
Hannah Wolfe 243b387063 Helper Proxy & single express-hbs instance (#8225)
refs #8126, #8221, #8223

 New 'Proxy' for all helper requires
- this is not currently enforced, but could be, much like apps
- the proxy object is HUGE
- changed date to use SafeString, this should have been there anyway
- use the proxy for all helpers, including those in apps 😁

 🎨 Single instance of hbs for theme + for errors
- we now have theme/engine instead of requiring express-hbs everywhere
- only error-handler still also requires express-hbs, this is so that we can render errors without extra crud
- TODO: remove the asset helper after #8126 IF it is not needed, or else remove the TODO

🎨 Cleanup visibility utils
🎨 Clean up the proxy a little bit
🚨 Unskip test as it now works!
🎨 Minor amends as per comments
2017-04-04 18:07:35 +02:00

56 lines
1.7 KiB
JavaScript

// # Has Helper
// Usage: `{{#has tag="video, music"}}`, `{{#has author="sam, pat"}}`
//
// Checks if a post has a particular property
var proxy = require('./proxy'),
_ = require('lodash'),
logging = proxy.logging,
i18n = proxy.i18n;
module.exports = function has(options) {
options = options || {};
options.hash = options.hash || {};
var tags = _.map(this.tags, 'name'),
author = this.author ? this.author.name : null,
tagList = options.hash.tag || false,
authorList = options.hash.author || false,
tagsOk,
authorOk;
function evaluateTagList(expr, tags) {
return expr.split(',').map(function (v) {
return v.trim();
}).reduce(function (p, c) {
return p || (_.findIndex(tags, function (item) {
// Escape regex special characters
item = item.replace(/[\-\/\\\^$*+?.()|\[\]{}]/g, '\\$&');
item = new RegExp('^' + item + '$', 'i');
return item.test(c);
}) !== -1);
}, false);
}
function evaluateAuthorList(expr, author) {
var authorList = expr.split(',').map(function (v) {
return v.trim().toLocaleLowerCase();
});
return _.includes(authorList, author.toLocaleLowerCase());
}
if (!tagList && !authorList) {
logging.warn(i18n.t('warnings.helpers.has.invalidAttribute'));
return;
}
tagsOk = tagList && evaluateTagList(tagList, tags) || false;
authorOk = authorList && evaluateAuthorList(authorList, author) || false;
if (tagsOk || authorOk) {
return options.fn(this);
}
return options.inverse(this);
};