Javascript 云代码功能不保存数据
在将其放到云代码中之前,我在Angular中对其进行了测试,成功地在整个程序中生成了正确的console.log响应。由于此函数处理用户表中的数据,因此它必须使用主密钥,并且是云代码。在云中使用此代码时,它将“duty”列保存到用户表中,但没有数据(我确信有数据要保存)。此外,我甚至不确定代码是否经过了第一个解析查询,因为console.log在解析日志中没有返回任何内容。我哪里做错了Javascript 云代码功能不保存数据,javascript,angularjs,parse-platform,parse-cloud-code,Javascript,Angularjs,Parse Platform,Parse Cloud Code,在将其放到云代码中之前,我在Angular中对其进行了测试,成功地在整个程序中生成了正确的console.log响应。由于此函数处理用户表中的数据,因此它必须使用主密钥,并且是云代码。在云中使用此代码时,它将“duty”列保存到用户表中,但没有数据(我确信有数据要保存)。此外,我甚至不确定代码是否经过了第一个解析查询,因为console.log在解析日志中没有返回任何内容。我哪里做错了 'use strict'; var express = require('express'); var app
'use strict';
var express = require('express');
var app = express();
app.use(express.bodyParser());
var _ = require('underscore');
var server = require('http').createServer(app);
Parse.Cloud.define("updateMerchant", function(request, response) {
Parse.Cloud.useMasterKey();
var user = Parse.Object.extend("User")
var merchantQuery = new Parse.Query(Parse.User);
var Offers = Parse.Object.extend("Offer");
var offerQuery = new Parse.Query(Offers);
var Matches = Parse.Object.extend("Matched");
var matchQuery = new Parse.Query(Matches);
var merchantDuty = [];
var merchants = request.params.data;//I confirmed the validity of this a key value pair where the value is an array of objects.
var merchantIds = _.map(merchants, function(n){return n.id});
console.log(merchantIds)
offerQuery.containedIn("user", merchants);
offerQuery.limit(1000);
offerQuery.find({//CODE STOPS RUNNING?!?
success: function (offers) {
var offerIds = _.map(offers, function (n) {
return n.id});
console.log(offers)//this is telling as it does not appear in the Parse log!
var offersBeta = _.map(offers, function (n) {
return _.extend(_.find(n), {id: n.id})});
matchQuery.containedIn("offer", offers);
matchQuery.limit(1000);
matchQuery.find({
success: function (matches) {
var merchantArray = _.map(_.flatten(matches), function (n) {return _.find(n)});
var offers3 = _.map(offersBeta, function (n) {return _.extend(n, {
Matched: _.filter(merchantArray, function (a) {return a.offer.id == n.id})})})
var duty = function (TotalBill, id) {
var promise = new Parse.Promise();
merchantQuery.get(id, {
success: function (merchantBill) {
merchantBill.set("duty", TotalBill);
merchantBill.save().then(function(obj){ console.log(obj); }, function(error){console.log(error)})}})}
merchantDuty.push(duty(_.map(offer9, function(n){return n.TotalBill}), _.map(offer9, function(n){return n.id})));
},
error: function(){console.log(error);
}
})
}
})
//Code begins running again!
return Parse.Promise.when(merchantDuty).then(function() {
response.success("Success");
},
function(error) {response.error("Something is still wrong");
console.log(error);})
})
更清楚地说,offerQuery.find和return Parse.Promise之间没有任何关联 行
返回Parse.Promise.when(merchantDuty)
在merchantDuty数组中有任何承诺(初始化为空)之前执行。
因此,整个函数在查询find success函数之前终止
我认为,如果您创建并向merchantDuty数组添加查询承诺,您将修复您的错误
我还建议您对查询方法使用promise回调。比如:
query.find().then(function(){
//success
}, function(error){
//error
});
然后,您可以通过返回另一个承诺来链接它们,并使代码结构更好。您需要在
offerQuery.containedIn(“用户”,商家)中传递指针代码>。看
试试这个:
var _ = require('underscore');
Parse.Cloud.define("updateMerchant", function(request, response) {
Parse.Cloud.useMasterKey();
var merchantDuty = [];
var merchants = request.params.data;//I confirmed the validity of this a key value pair where the value is an array of objects.
// var merchantIds = _.map(merchants, function(n) {return n.id;});
// console.log(merchantIds);
// Since I don't have the merchants request parameter, I'll fake it with some fake users
var fakeMerchants = [{"username":"Batman","objectId":"f7zZkPx7kT","createdAt":"2015-04-07T19:41:25.014Z","updatedAt":"2015-04-07T19:41:25.014Z","__type":"Object","className":"_User"},{"username":"Robin","objectId":"wgG4EfaFN1","createdAt":"2015-04-07T19:41:35.024Z","updatedAt":"2015-04-07T19:41:35.024Z","__type":"Object","className":"_User"}];
// We can get some users like this:
// var fakeMerchantsQuery = new Parse.Query(Parse.User);
// fakeMerchantsQuery.find().then(function(users) {
// console.log(users);
// });
// Since the 'user' column in Offer Class is a pointer, we need to pass merchant pointers.
// Otherwise we get the error "pointer field user needs a pointer value"
// See https://www.parse.com/questions/using-containedin-with-array-of-pointers
var fakeMerchantsPointers = _.map(fakeMerchants, function(merchant) { // TODO change to real merchants
var pointer = new Parse.User();
pointer.id = merchant.objectId;
return pointer;
});
console.log(fakeMerchantsPointers);
var offerQuery = new Parse.Query(Parse.Object.extend("Offer"));
offerQuery.containedIn("user", fakeMerchantsPointers); // TODO change to real merchants
offerQuery.limit(1000);
offerQuery.find().then(function(offers) {
console.log("inside offer query");
console.log(offers);
// Here I assume that the column 'offer' is a Pointer
var matchQuery = new Parse.Query(Parse.Object.extend("Matched"));
matchQuery.containedIn("offer", offers);
matchQuery.limit(1000);
return matchQuery.find();
}).then(function(matches){
console.log("inside matches query");
console.log(matches);
// Add the duty stuff here...
// We must call success or error
response.success("Success");
});
});
让我知道它是否有效
请注意,您不应该将云代码与ExpressJS代码混用。云代码应该在main.js
中,ExpressJS代码应该在app.js
中。然后,在cloudcodemain.js
callrequire('Cloud/app.js')代码>如果您希望请求通过ExpressJS。merchantIds会打印在日志中,对吗?@Kodingllph没错,但offerQuery.find和return语句之间的内容不会打印在日志中。这虽然没有很好的效果,但更近了一步。我需要像选择的答案一样将所有这些都链接起来。