A bit new to JS. I'm using Parse.com's CloudCode in order to calculate the "score" of a "Post" instance. I retrieve any "Votes" associated with a post, and then sum up their "value", then return that value.
Parse.Cloud.define("postScore", function(request, response) {
var postId = request.params.postId;
var post = Parse.Object.extend("Post");
post.id = postId;
var query = new Parse.Query("Vote");
query.equalTo("post", post);
query.find({
success: function(results) {
var sum = 0;
for (var i = 0; i < results.length; ++i) {
sum += results[i].get("value");
}
response.success(sum);
},
error: function() {
response.error("Could not calculate value");
}
});
});
Getting this error:
2014-05-02 19:21:09.124 XXX[33361:2d3b] Error: undefined (Code: 141,
Version: 1.2.19)
Not too sure what the issue is.
Calling it in my iOS app like so:
- (void)fetchPostScores
{
for (BVYPost *post in _postsArray) {
[PFCloud callFunctionInBackground:#"postScore" withParameters:#{#"postId": post.objectId} block:^(NSNumber *score, NSError *error) {
if (!error) {
post.score = score;
}
}];
}
}
This is wrong:
var post = Parse.Object.extend("Post");
post.id = postId;
The correct syntax would be:
var post = new Parse.Object("Post");
post.id = postId;
Related
I'm having issues with saving multiple rows to the back-end. I don't know how to send all the rows in batch, so I was trying to send each row at a time but it hits after it has put the last row into the oEntry.
submitButtonPress: function() {
var oModel = this.getModel();
var hasChanges = oModel.hasPendingChanges();
if (hasChanges) {
var mcJson = {};
//get only rows with changes
var modelChanges = oModel.getPendingChanges();
mcJson = modelChanges;
var mcJsonLength = Object.keys(mcJson).length;
var mcJsonKey = Object.keys(mcJson);
var officeCode = this.byId("officeCombo").getValue();
var oEntry = {};
//for each row get data
for (var i = 0; i < mcJsonLength; i++) {
var item = mcJsonKey[i];
var obj = modelChanges[item];
var estDate = this.convertDate(obj.ESTIMATE_DATE);
oEntry.MRU_ID = obj.EST_MRU_ID.toString();
oEntry.ESTIMATE_PRCT = obj.ESTIMATE_PRCT;
oEntry.INSTALL_READ = obj.INSTALL_READ;
oEntry.PLAN_ESTIMATE = obj.EST_INSTALL;
oEntry.MRU_DATE = estDate;
oEntry.OFFICE_CODE = officeCode.toString();*/
oModel.create("/MRU_ESTSet", oEntry, {
success: function(oData, response) {
sap.m.MessageBox.alert("MRU: " + oEntry.MRU_ID + " EST DATE:" + oEntry.MRU_DATE + " SAVED!");},
error: function(oError) {
sap.m.MessageBox.alert("Error Saving Entries!!");
}
});
}
} else {
sap.m.MessageBox.alert("No Changes To Submit");
}
}
If you are using oDataModel V2 then what you could just simply do is:
oModel.submitChanges()
This would send all changes made to the model in a batch.
submitChanges method documentation
This is what ended up working for me.
Adding:
oModel.setUseBatch(true);
oModel.create("/MRU_ESTSet", oEntry, {
method: "POST",
success: function(oData) {
//sap.m.MessageBox.alert("success sent!");
},
error: function(oError) {
//sap.m.MessageBox.alert("Error Saving Entries!!");
}
});
}
oModel.submitChanges({
success: function(oData, response) {
sap.m.MessageBox.success("Success Saving Entries!");
},
error: function(oError) {
sap.m.MessageBox.error("Error Saving Entries!!");
}
});
So the function ends up like this and only sends one confirmation instead of many:
submitButtonPress: function() {
var oModel = this.getModel();
oModel.setUseBatch(true);
var hasChanges = oModel.hasPendingChanges();
if (hasChanges) {
var mcJson = {};
var modelChanges = oModel.getPendingChanges();
mcJson = modelChanges;
var mcJsonLength = Object.keys(mcJson).length;
var mcJsonKey = Object.keys(mcJson);
var officeCode = this.byId("officeCombo").getValue();
for (var i = 0; i < mcJsonLength; i++) {
var item = mcJsonKey[i];
var obj = modelChanges[item];
var estDate = this.convertDate(obj.ESTIMATE_DATE);
var oEntry = {
MRU_ID: obj.EST_MRU_ID,
ESTIMATE_PRCT: obj.ESTIMATE_PRCT,
INSTALL_READ: obj.INSTALL_READ,
PLAN_ESTIMATE: obj.EST_INSTALL,
MRU_DATE: estDate,
OFFICE_CODE: officeCode
};
oModel.create("/MRU_ESTSet", oEntry, {
method: "POST",
success: function(oData) {
//sap.m.MessageBox.alert("success sent!");
},
error: function(oError) {
//sap.m.MessageBox.alert("Error Saving Entries!!");
}
});
}
oModel.submitChanges({
success: function(oData, response) {
sap.m.MessageBox.success("Success Saving Entries!");
},
error: function(oError) {
sap.m.MessageBox.error("Error Saving Entries!!");
}
});
} else {
sap.m.MessageBox.alert("No Changes To Submit");
}
},
Trying to create a lambda function that lists tagged ec2 and tagged rds and performs an action thereafter. This is the first time i have used javascript and would appreciate some help.
Please see my example below
var aws = require('aws-sdk');
var ec2 = new aws.EC2();
var rds = new aws.RDS();
aws.config.region = 'us-east-1';
exports.handler = function(event,context) {
if (event) {
console.log(event.id);
}
//setup params for rds call
var rdsparams = {
DBInstanceIdentifier: 'master',
};
//setup params for ec2 call
var ec2params = {
Filters: [
{
Name: 'tag:role',
Values: [
'app'
],
}
]
};
//Get ec2 instances with app tag, may need to add a condition on running so pulled it into hash
ec2.describeInstances(ec2params, function(err, appdata) {
if (err) {
console.log(err);
return;
}
else {
var apparray={};
for(var i = 0; i < appdata.Reservations.length; i++) {
var ins = appdata.Reservations[i].Instances[0];
var id = ins.InstanceId;
var state = ins.State.Name;
apparray[id]=state;
}
console.log(apparray);
context.succeed(apparray);
}
});
rds.describeDBInstances(rdsparams, function(err, data) {
if (err) {
console.log(err, err.stack);
return;
}
else {
var rdsarray={};
var rdsarray=(data);
console.log(rdsarray);
var ins=rdsarray[0];
var name = ins.ReadReplicaDBInstanceIdentifiers[0];
rdsarray[replicant]=name;
}
context.succeed(rdsarray);
});
//context.done();
};
I want to return my filtered (apparray) and (rdsarray) back from my functions and perform a calculation on this within the main body of the script. Any ideas on how to do this.
something like
var replicas = rdsarray.length for example
Thanks in advance
var aws = require('aws-sdk');
var ec2 = new aws.EC2();
var rds = new aws.RDS();
aws.config.region = 'us-east-1';
exports.handler = function(event, context) {
if (event) {
console.log(event.id);
}
//setup params for rds call
var rdsparams = {
DBInstanceIdentifier: 'master',
};
//setup params for ec2 call
var ec2params = {
Filters: [{
Name: 'tag:role',
Values: [
'app'
],
}]
};
//Get ec2 instances with app tag, may need to add a condition on running so pulled it into hash
ec2.describeInstances(ec2params, function(err, appdata) {
if (err)
return context.done(err, null);
var apparray = {};
for (var i = 0; i < appdata.Reservations.length; i++) {
var ins = appdata.Reservations[i].Instances[0];
var id = ins.InstanceId;
var state = ins.State.Name;
apparray[id] = state;
}
console.log(apparray);
var resultData = {};
resultData.apparray = apparray;
rds.describeDBInstances(rdsparams, function(err, data) {
if (err)
return context.done(err, null);
var rdsarray = {};
var rdsarray = (data);
console.log(rdsarray);
var ins = rdsarray[0];
var name = ins.ReadReplicaDBInstanceIdentifiers[0];
rdsarray[replicant] = name;
resultData.rdsarray = rdsarray;
context.done(null, resultData);
});
});
};
and back in the code from you are calling the lambda function
var lambda = new sdk.Lambda();
var params = {
FunctionName: 'arn:aws:lambda:us-west-2:1541546477777:function:MyFunction',
Payload: JSON.stringify(/*your params here*/)
};
lambda.invoke(params, function(err, data) {
if (err) {
console.log('error ===', err);
return ;
}
var lambdaData = JSON.parse(data.Payload);
// do your stuff here
});
Is this what you needed? It may be broken but I hope you get the idea of it
I am writing an express app to generate a google map from geo coordinates out of photos. I am attempting to use firebase to save data about the images. The code is fully working except when I save the photo data to firebase it breaks the map rendering on the next page showing connection errors to all my local files in the console like so
So the page is rendering but the map doesn't load and nor do the images. The data I am saving to firebase is actually saving though, and If I remove the function that saves the data to firebase everything works as expected. I think it may have something to do with the way the response is being pushed but I am at a loss. In any other page where I am saving data to firebase it works fine.
Here is the code for the route that is generating the photo data and saving it to firebase:
var express = require('express');
var router = express.Router();
var util = require('util');
var fs = require('fs');
var im = require('imagemagick');
var stormpath = require('express-stormpath');
var _ = require('lodash')
var Firebase = require('firebase');
router.post("/:campaignId", stormpath.loginRequired, function(req, res, next) {
function gatherImages(files, callback) {
//accept single image upload
if (!_.isArray(files)) {
files = [files];
}
var uploads = [];
var count = 0;
files.forEach(function(file) {
fs.exists(file.path, function(exists) {
if (exists) {
var name = req.body[file.originalname];
console.log(name);
var path = file.path;
var upFile = file.name;
uploads.push({
file: upFile,
imgPath: path,
caption: name || 'no comment'
});
count++;
}
if (files.length === count) {
callback(uploads);
}
});
});
}
function getGeoLoc(path, callback) {
im.readMetadata('./' + path, function(error, metadata) {
var geoCoords = false;
if (error) throw error;
if (metadata.exif.gpsLatitude && metadata.exif.gpsLatitudeRef) {
var lat = getDegrees(metadata.exif.gpsLatitude.split(','));
var latRef = metadata.exif.gpsLatitudeRef;
if (latRef === 'S') {
lat = lat * -1;
}
var lng = getDegrees(metadata.exif.gpsLongitude.split(','));
var lngRef = metadata.exif.gpsLongitudeRef;
if (lngRef === 'W') {
lng = lng * -1;
}
var coordinate = {
lat: lat,
lng: lng
};
geoCoords = coordinate.lat + ' ' + coordinate.lng;
console.log(geoCoords);
}
callback(geoCoords);
});
}
function getDegrees(lat) {
var degrees = 0;
for (var i = 0; i < lat.length; i++) {
var cleanNum = lat[i].replace(' ', '');
var parts = cleanNum.split('/');
var coord = parseInt(parts[0]) / parseInt(parts[1]);
if (i == 1) {
coord = coord / 60;
} else if (i == 2) {
coord = coord / 3600;
}
degrees += coord;
}
return degrees.toFixed(6);
}
function processImages(uploads, callback) {
var finalImages = [];
var count = 0;
uploads.forEach(function(upload) {
var path = upload.imgPath;
getGeoLoc(path, function(geoCoords) {
upload.coords = geoCoords;
finalImages.push(upload);
count++;
if (uploads.length === count) {
callback(finalImages);
}
});
});
}
function saveImageInfo(finalImages, callback) {
var campaignId = req.param('campaignId');
var user = res.locals.user;
var count = 0;
var campaignPhotosRef = new Firebase('https://vivid-fire-567.firebaseio.com/BSB/userStore/' + user.username + '/campaigns/' + campaignId + '/photos');
finalImages.forEach(function(image) {
campaignPhotosRef.push(image, function(err) {
if (err) {
console.log(err);
} else {
count++;
if (finalImages.length === count) {
callback(finalImages);
} else {
return;
}
}
});
});
}
if (req.files) {
if (req.files.size === 0) {
return next(new Error("Why didn't you select a file?"));
}
gatherImages(req.files.imageFiles, function(uploads) {
processImages(uploads, function(finalImages) {
saveImageInfo(finalImages, function(finalImages) {
var campaignId = req.param('campaignId');
console.log(res.req.next);
res.render("uploadMapPage", {
title: "File(s) Uploaded Successfully!",
files: finalImages,
campaignId: campaignId,
scripts: ['https://maps.googleapis.com/maps/api/js?key=AIzaSyCU42Wpv6BtNO51t7xGJYnatuPqgwnwk7c', '/javascripts/getPoints.js']
});
});
});
});
}
});
module.exports = router;
This is the only file I have written trying to push multiple objects to firebase. This is my first time using Firebase and Stormpath so any help would be greatly appreciated. Also one other thing that may be helpful is the error from the terminal being output when the issue happens:
POST /uploaded/-JapMLDYzPnbtjvt001X 200 690.689 ms - 2719
/Users/jpribesh/Desktop/Code/BanditSignBoss/node_modules/firebase/lib/firebase-node.js:24
?a:null}function Db(a){try{a()}catch(b){setTimeout(function(){throw b;},Math.f
^
TypeError: Property 'next' of object #<IncomingMessage> is not a function
at fn (/Users/jpribesh/Desktop/Code/BanditSignBoss/node_modules/express/lib/response.js:899:25)
at EventEmitter.app.render (/Users/jpribesh/Desktop/Code/BanditSignBoss/node_modules/express/lib/application.js:532:5)
at ServerResponse.res.render (/Users/jpribesh/Desktop/Code/BanditSignBoss/node_modules/express/lib/response.js:904:7)
at /Users/jpribesh/Desktop/Code/BanditSignBoss/routes/campaigns.js:20:25
at Array.forEach (native)
at /Users/jpribesh/Desktop/Code/BanditSignBoss/routes/campaigns.js:16:18
at /Users/jpribesh/Desktop/Code/BanditSignBoss/node_modules/firebase/lib/firebase-node.js:25:533
at Db (/Users/jpribesh/Desktop/Code/BanditSignBoss/node_modules/firebase/lib/firebase-node.js:24:165)
at Ye (/Users/jpribesh/Desktop/Code/BanditSignBoss/node_modules/firebase/lib/firebase-node.js:124:216)
at Ze (/Users/jpribesh/Desktop/Code/BanditSignBoss/node_modules/firebase/lib/firebase-node.js:123:818)
UPDATE: It seems that the connection errors are inconsistent. Sometimes the images display just fine, sometimes only some of the images get a connection error, and other times everything including the google map script gets a connection error. This is really throwing me off no idea what the issue is. Any help or suggestions is greatly appreciated!
UPDATE 2: I changed the function saving the image data to firebase to use the firebase push function callback (to indicate completion) and added a length check on the forEach loop running to save each image's data. See updated code above. I am now getting the following error for each image that is uploaded in the terminal, but the connection errors are gone:
Error: Can't set headers after they are sent.
at ServerResponse.OutgoingMessage.setHeader (http.js:689:11)
at ServerResponse.header (/Users/jpribesh/Desktop/Code/BanditSignBoss/node_modules/express/lib/response.js:666:10)
at ServerResponse.send (/Users/jpribesh/Desktop/Code/BanditSignBoss/node_modules/express/lib/response.js:146:12)
at fn (/Users/jpribesh/Desktop/Code/BanditSignBoss/node_modules/express/lib/response.js:900:10)
at View.exports.renderFile [as engine] (/Users/jpribesh/Desktop/Code/BanditSignBoss/node_modules/jade/lib/jade.js:325:12)
at View.render (/Users/jpribesh/Desktop/Code/BanditSignBoss/node_modules/express/lib/view.js:93:8)
at EventEmitter.app.render (/Users/jpribesh/Desktop/Code/BanditSignBoss/node_modules/express/lib/application.js:530:10)
at ServerResponse.res.render (/Users/jpribesh/Desktop/Code/BanditSignBoss/node_modules/express/lib/response.js:904:7)
at /Users/jpribesh/Desktop/Code/BanditSignBoss/routes/campaigns.js:20:25
at Array.forEach (native)
OK I finally figured out the issue here. I did a few things to remedy my problem. First I converted the route to use next properly to separate out each part of the route out, it processes the images, then saves, then renders. Here is the updated code from that file:
var express = require('express');
var router = express.Router();
var util = require('util');
var fs = require('fs');
var im = require('imagemagick');
var stormpath = require('express-stormpath');
var _ = require('lodash')
var Firebase = require('firebase');
function processData(req, res, next) {
function gatherImages(files, callback) {
//accept single image upload
if (!_.isArray(files)) {
files = [files];
}
var uploads = [];
var count = 0;
files.forEach(function(file) {
fs.exists(file.path, function(exists) {
if (exists) {
var name = req.body[file.originalname];
console.log(name);
var path = file.path;
var upFile = file.name;
uploads.push({
file: upFile,
imgPath: path,
caption: name || 'no comment'
});
count++;
}
if (files.length === count) {
callback(uploads);
}
});
});
}
function getGeoLoc(path, callback) {
im.readMetadata('./' + path, function(error, metadata) {
var geoCoords = false;
if (error) throw error;
if (metadata.exif.gpsLatitude && metadata.exif.gpsLatitudeRef) {
var lat = getDegrees(metadata.exif.gpsLatitude.split(','));
var latRef = metadata.exif.gpsLatitudeRef;
if (latRef === 'S') {
lat = lat * -1;
}
var lng = getDegrees(metadata.exif.gpsLongitude.split(','));
var lngRef = metadata.exif.gpsLongitudeRef;
if (lngRef === 'W') {
lng = lng * -1;
}
var coordinate = {
lat: lat,
lng: lng
};
geoCoords = coordinate.lat + ' ' + coordinate.lng;
console.log(geoCoords);
}
callback(geoCoords);
});
}
function getDegrees(lat) {
var degrees = 0;
for (var i = 0; i < lat.length; i++) {
var cleanNum = lat[i].replace(' ', '');
var parts = cleanNum.split('/');
var coord = parseInt(parts[0]) / parseInt(parts[1]);
if (i == 1) {
coord = coord / 60;
} else if (i == 2) {
coord = coord / 3600;
}
degrees += coord;
}
return degrees.toFixed(6);
}
function processImages(uploads, callback) {
var finalImages = [];
var count = 0;
uploads.forEach(function(upload) {
var path = upload.imgPath;
getGeoLoc(path, function(geoCoords) {
upload.coords = geoCoords;
finalImages.push(upload);
count++;
if (uploads.length === count) {
callback(finalImages);
}
});
});
}
if (req.files) {
if (req.files.size === 0) {
return next(new Error("Why didn't you select a file?"));
}
gatherImages(req.files.imageFiles, function(uploads) {
processImages(uploads, function(finalImages) {
req.finalImages = finalImages;
req.campaignId = req.param('campaignId');
next();
});
});
}
}
function saveImageInfo(req, res, next) {
var user = res.locals.user;
var count = 0;
var campaignPhotosRef = new Firebase('https://vivid-fire-567.firebaseio.com/BSB/userStore/' + user.username + '/campaigns/' + req.campaignId + '/photos');
var finalImages = req.finalImages;
finalImages.forEach(function(image) {
campaignPhotosRef.push(image, function(err) {
if (err) {
console.log(err);
} else {
console.log('Data saved successfully: ' + image);
count++;
if (req.finalImages.length === count) {
next();
}
}
});
});
}
router.post("/:campaignId", stormpath.loginRequired, processData, saveImageInfo, function(req, res) {
res.render("uploadMapPage", {
title: "File(s) Uploaded Successfully!",
files: req.finalImages,
campaignId: req.campaignId,
scripts: ['https://maps.googleapis.com/maps/api/js?key=AIzaSyCU42Wpv6BtNO51t7xGJYnatuPqgwnwk7c', '/javascripts/getPoints.js']
});
});
module.exports = router;
Then I realized in the tracestack I included in my question part of it was tracing back to another file I was using firebase in. I was using a call to .on() instead of using .once() when pulling my data. After reorganizing my route and changing all my calls to .on to .once for firebase data everything is now working properly. I think the real issue here was the use of .on() on my firebase calls instead of .once() as the .on() watches for events continually rather than .once which obviously only watches for it once.
Using parse.com and JavaScript.
Currently I have a BadgeSentTo which is a string taken from a html option box. I want to save this to parse, but ideally I want to save it into a pointer column "SentTo" so that it links back to the _User class.
It wont let me save as is, because its expecting a pointer. Is there a why to convert this to a pointer in the code?
$(document).ready(function () {
$("#send").click(function () {
var myBadge = new MyBadge();
var badgeselected = $('#badgeselect img').attr("src");
var BadgeSentTo = $('#SentToUser').val();
var uploadercomment = $('#UploaderComment').val();
myBadge.set("BadgeName", badgeselected);
myBadge.set("Comment", uploadercomment);
myBadge.set("uploadedBy", Parse.User.current());
myBadge.set("SentTo", BadgeSentTo).id;
myBadge.save(null, {
success: function (results) {
console.log("Done");
//location.reload();
},
error: function (contact, error) {
// The save failed.
alert("Error: " + error.code + " " + error.message);
}
});
return false;
});
});
The query capturing the data is
var currentUser = Parse.User.current();
var FriendRequest = Parse.Object.extend("FriendRequest");
var query = new Parse.Query(FriendRequest);
query.include('toUser');
query.include('SentTo');
query.include("myBadge");
query.equalTo("fromUser", currentUser);
query.equalTo("status", "Request sent");
query.find({
success: function (results) {
var friends = [];
for (var i = 0; i < results.length; i++) {
friends.push({
username: results[i].get('toUser').get('username'),
userId: results[i].get('toUser').id
});
var select = document.getElementById("selectNumber");
$.each(friends[0], function (i, v) {
//alert(i+" "+v);
var opt = v;
var el = document.createElement("option");
el.textContent = opt;
el.value = opt;
select.appendChild(el);
})
}
If BadgeSentTo contains the objectId of the User, you'll need to wrap that in a Parse Object. The SDK will convert it to a pointer to _User when it saves.
myBadge.set("SentTo", new Parse.User({id: BadgeSentTo}));
I am trying to implement an autocompleter on a nodejs app using nowjs.
everyone.now.sendAutocomplete = function(search) {
var response = getAutocomplete(search);
console.log("response");
console.log(response);
};
which calls:
function getAutocomplete(search) {
console.log(search);
var artist = new Array();
request({uri: 'http://musicbrainz.org/ws/2/artist/?query=' + search + '&limit=4', headers: "Musicbrainz Application Version 1"}, function(error, response, body) {
par.parseString(body, function(err, result) {
var count = result['artist-list']['#']['count'];
var artists = result['artist-list']['artist'];
// var artist = new Array();
if (count > 1) {
artists.forEach(function(a) {
var att = a['#'];
var id = att['id'];
var name = a['name'];
var dis = a['disambiguation'];
if (dis) {
var display = name + " (" + dis + " )";
} else {
display = name;
}
artist.push({'id':id, 'name': name, 'disambiguation':dis,
'label':display, 'value':name, 'category':"Artists"});
});
//everyone.now.receiveResponse(artist);
console.log("artist");
console.log(artist);
return artist;
} else {
console.log(artists);
var att = artists['#'];
var id = att['id'];
var name = artists['name'];
var dis = artists['disambiguation'];
var resp = [{'id':id, 'name': name, 'disambiguation':dis,
'label':name, 'value':name, 'category':"Artists"}];
return resp;
// everyone.now.receiveResponse([{'id':id, 'name': name, 'disambiguation':dis,
// 'label':name, 'value':name, 'category':"Artists"}]);
}
});
});
}
However, console.log(response) says that response is undefined. I am new to node so the answer is probably simple, but still can't figure it out.
You are treating the async call as synchronous. Your getAutocomplete needs to take a callback function to get the response. You're using that a lot already, in your request call and your parseString call.
Like this:
everyone.now.sendAutocomplete = function(search) {
getAutocomplete(search, function (response) {
console.log("response");
console.log(response);
});
};
And instead of return:
function getAutocomplete(search, callback) {
// ...
callback(result);
// ...
}