解析云代码：简单功能不起作用

Question

I'm trying to implement a beforeSave function on cloud code and the following simple function doesn't work when there are multiple hashtags. Given if Product has two hashtags and the Hashtag table is empty, the following parse cloud code stores the second hashtag twice with a count of 1:

 Parse.Cloud.beforeSave("Product", function(req, res) { var product = req.object; var hashtags = product.get("hashtags"); for (var i = 0; i < hashtags.length; i++) { var currentHashtag = hashtags[i].toLowerCase(); var hashtagQuery = new Parse.Query("Hashtag") hashtagQuery.equalTo("label", currentHashtag); hashtagQuery.find({ success: function(results) { if (results.length == 0) { var hashtagClass = Parse.Object.extend("Hashtag"); var newHashtag = new hashtagClass(); newHashtag.set("label", currentHashtag); newHashtag.set("count", 1); newHashtag.save(); } else { var hashtagObj = results[0]; hashtagObj.increment("count"); hashtagObj.save(); } if (i == hashtags.length - 1) res.sucesss(); }, error: function() { res.error("Oops"); } }); } }); 

Answer 1

change this line var hashtagObj = results[0]; to this line

var hashtagObj = results[i];