I want to query a database and if result is found upload a file. At the moment it's the other way around. First the image is uploaded then the db is searched and updated.
A value I need, cid(req.body.cid), can only be accessed after upload() is called so that kinda complicates things, this is my current, working, code :
var multer = require('multer');
var upload = multer({
dest: './public/images/usercontent',
limits: {
files: 1,
fields: 1,
fileSize: 10000
},
fileFilter: function fileFilter(req, file, cb) {
if (file.mimetype !== 'image/png' && file.mimetype !== 'image/jpg' && file.mimetype !== 'image/jpeg') {
req.multerImageValidation = 'wrong type';
return cb(null, false);
}
return cb(null, true);
}
}).single('uploads[]');
router.post('/uploadimg', isLoggedIn, function(req, res, next) {
upload(req, res, function(err) {
if (err) {
if (err.code === 'LIMIT_FILE_SIZE') {
return res.send({
statusText: 'fileSize'
});
}
return res.send({
statusText: 'failed'
});
}
if (req.multerImageValidation) {
return res.send({
statusText: 'wrongType'
});
}
Company.findOneAndUpdate({
ownedBy: req.user.local.username,
_id: req.body.cid // value that is sent with the image
}, {
icon: 'images/usercontent/' + req.file.filename
}, function(err, result) {
if (err) {
return res.send({
statusText: 'failed'
});
}
if (!result) {
return res.send({
statusText: 'failed'
});
}
res.send({
statusText: 'success'
});
});
//
});
});
Why don't you use the success callback for the db query to upload image and then use the success callback of the upload image function to update the db record with cid? At a very high level, this would be:
query db for record
//if record found, in success callback
attempt to upload image
//if image uploaded successfully and cid generated, in success callback
update db record
You can use the mongo update operation to ensure atomic operation
Related
My lambda function uses the method
ddb.putItem(params, function(err, data) {
if (err) console.log(err, err.stack); // an error occurred
else console.log("SUBMITTED DATA"); // successful response
});
with my params being correctly formatted to my table. No error is shown in my logs, however "SUBMITTED DATA" does not appear in the logs either, and the data is not put into my DynamoDB table. Any idea on what might be causing this problem? Heres my complete function:
const TrackHabitIntentHandler = {
canHandle(handlerInput) {
return handlerInput.requestEnvelope.request.type === 'IntentRequest'
&& handlerInput.requestEnvelope.request.intent.name === 'TrackHabitIntent';
},
handle(handlerInput) {
ddb.putItem(params, function(err, data) {
if (err) console.log(err, err.stack); // an error occurred
else console.log("SUBMITTED DATA"); // successful response
});
const speechText = "That's awesome! I'll add today to your streak of 4 days";
return handlerInput.responseBuilder
.speak(speechText)
.reprompt(speechText)
.withSimpleCard('Hello World', speechText)
.getResponse();
}};
exports.handler = function (event, context) {
if (!skill) {
skill = Alexa.SkillBuilders.custom()
.addRequestHandlers(
LaunchRequestHandler,
HelpIntentHandler,
HelpMeIntentHandler,
TrackHabitIntentHandler,
NewHabitIntentHandler,
CancelAndStopIntentHandler,
SessionEndedRequestHandler,
)
.addErrorHandlers(ErrorHandler)
.create();
}
return response;
};
Thanks
Please check this code to add data in dynamoDB that can help you.
let putParams = {
TableName: tableName,
Item: {
'Id': {
S: Id
},
'name': {
S: name
}
},
ConditionExpression: 'attribute_exists(Id)'
};
dynamoDb.putItem(putParams, function (err, data) {
if (err) {
console.log('failure:put data from Dynamo error', err);
reject(err);
} else {
console.log('success:put data from Dynamo data');
resolve(data);
}
});
I've overridden an action in the controller that was generated from a blueprint API in Sails.JS.
I used the create action. Now I can't get a Sails.JS socket event from that action anymore, however, other actions are working fine.
io.socket.on('posts', function gotHelloMessage(data) {
console.log('Post!', data);
});
io.socket.get('/posts', function gotResponse(body, response) {
console.log('Posts: ', body);
})
What's the way to implement so that the create action also generates the event with my newly implemented actions?
create: function(req, res) {
if (
!_.has(req.body, "title") ||
!_.has(req.body, "body") ||
!_.has(req.body, "category")
) {
return res.serverError("No field should be empty.");
}
var uploadPath = "../../assets/posts";
return req
.file("thumbnail")
.upload({ dirname: uploadPath }, async function(err, uploadedFiles) {
if (err) return res.serverError(err);
let post;
try {
post = await Posts.create({
title: req.body.title,
body: req.body.body,
category: req.body.category,
thumbnail:
uploadedFiles.length === 0
? ""
: uploadedFiles[0].fd.split("/").reverse()[0]
}).fetch();
return res.json({ result: post });
} catch (err) {
return res.json({ error: err });
}
});
}
I register '/' (route) .css and .js file as URL that should be cached at first.
But after that I realize that it cached the whole page, which means I don't see any update on my view, event there is an update on database.
So I change it only cache my .css and .js file not route ('/') anymore , I expected that's the problem.
But after awhile, the same problem still occurred. I check on my console it did cache the whole page again, even though my Service Worker file already change like this:
var CACHE_NAME = 'cache-v2';
var urlsToCache = [
'/assets/css/app.css',
'/assets/js/main.js',
'/assets/js/other.js'
];
self.addEventListener('install', function(event) {
event.waitUntil(
caches.open(CACHE_NAME)
.then(function(cache) {
console.log('Opened cache');
return cache.addAll(urlsToCache);
})
);
});
self.addEventListener('activate', function(e) {
console.log('[ServiceWorker] Activate');
e.waitUntil(
caches.keys().then(function(keyList) {
return Promise.all(keyList.map(function(key) {
if (key !== CACHE_NAME) {
console.log('[ServiceWorker] Removing old cache', key);
return caches.delete(key);
}
}));
})
);
return self.clients.claim();
});
self.addEventListener('fetch', function(event) {
event.respondWith(
caches.match(event.request)
.then(function(response) {
// Cache hit - return response
if (response) {
return response;
}
var fetchRequest = event.request.clone();
return fetch(fetchRequest).then(
function(response) {
if(!response || response.status !== 200 || response.type !== 'basic') {
return response;
}
var responseToCache = response.clone();
caches.open(CACHE_NAME)
.then(function(cache) {
cache.put(event.request, responseToCache);
});
return response;
}
);
})
);
});
in case anyone has the same problem,
here is what i should change
self.addEventListener('fetch', function(e) {
console.log('[ServiceWorker] Fetch', e.request.url);
e.respondWith(
caches.match(e.request).then(function(response) {
return response || fetch(e.request);
})
);
});
so my previous fetch looks like the problem
I got problem while I move into https://github.com/DaftMonk/generator-angular-fullstack.
Before my project was working. Here is code for frontend and backend part related to comment.
I am getting all time error 404. I don't know why I cannot find following path.
POST http://localhost:9000/api/providers/554a1dba53d9ca8c2a2a31ff/posts/554b1726f1116e00256e3d82/comments 404 (Not Found)
I am struggling couple of days to discover which part of my code have problem but I couldn't realize that.
server side
in comment.controller
// Creates a new comment in the DB.
exports.create = function(req, res) {
console.log('i ma inside api');
Post.findById(req.originalUrl.split('/')[3], function (err, post) { //here can not find post at all.
if (err) {
return handleError(res, err);
}
if (!post) {
return res.status(404).send('Post not found');
}
Comment.create(req.body, function (err, comment) {
if (err) {
return handleError(res, err);
}
post.comments.push(comment.id);
post.save(function (err) {
if (err) return handleError(res, err);
return res.status(201).json(comment);
});
});
});
};
route.js
app.use('/api/providers/:providerId/posts/:postId/comments', require('./api/provider/post/comment'));
index.js
var controller = require('./comment.controller.js');
var router = express.Router();
router.get('/', controller.index);
router.get('/:id', controller.show);
router.post('/', controller.create);
router.put('/:id', controller.update);
router.patch('/:id', controller.update);
router.delete('/:id', controller.destroy);
router.put('/:id/upvote', controller.upvote);
in client side:
factory:
//create new comment for post
ob.createComment = function(providerId, postId,comment) {
console.log('i am inside factory');
return $http.post('/api/providers/'+ providerId + '/posts/' + postId + '/comments' ,comment, {
headers: {Authorization: 'Bearer '+Auth.getToken()}
}).success(function(data){
_.forEach(ob.provider.posts,function(value,index){
if(value._id === post._id){
ob.posts[index].comments.push(data);
}
})
ob.current.comments.push(data)
// ob.provider1._id.posts.push(data);
});
};
in my controller
$scope.addComment = function(){
// if(!$scope.title || $scope.title === '') { return; }
if(!$scope.body || $scope.body === '') { return; }
console.log('$stateParams',$stateParams);
providers.createComment($stateParams.providerId, $stateParams.postId,{
//title: $scope.title,
body: $scope.body
});
$scope.body = '';
$scope.title = '';
};
This is my model in whole the project.
I am sending a post request via AJAX. The data successfully posts but the AJAX call never completes. Backbone on the front; Node on the back. I am including the save function from my backbone view and the express route.
save: function(event) {
event.preventDefault();
console.log( 'You signed up for ' + this.model.get('name'));
var name = this.model.get('name');
var courseDay = this.model.get('courseDay');
var time = this.model.get('time');
var location = this.model.get('location');
jQuery.post("/test/signups", {
"name" : name,
"courseDay" : courseDay,
"time" : time,
"location" : location,
}, function (data, textStatus, jqXHR) {
console.log("Post response:");
console.dir(data);
console.log(textStatus);
console.dir(jqXHR);
});
}
Route:
app.post('/test/signups', isLoggedIn, function (req, res){
User.findOne({'_id': req.user.id }, function(err, user) {
if (err)
return done(err);
if (user) {
user.signup.name = req.body.name;
user.signup.courseDay = req.body.courseDay;
user.signup.time = req.body.time;
user.signup.location = req.body.location;
user.signup.modified = req.body.modified;
user.update({$push: { "signup" :
{ name: user.signup.name,
courseDay: user.signup.courseDay,
time: user.signup.time,
location: user.signup.location,
modified: user.signup.modified
}
}},{safe:true, upsert:true},function(err){
if(err){
console.log(err);
} else {
console.log("Successfully added" + user.signup);
}
});
}
});
});
Your server side code needs to send a response. Try something like below. Note I try to cover all cases of an error, user not found, and user found.
app.post('/test/signups', isLoggedIn, function (req, res){
User.findOne({'_id': req.user.id }, function(err, user) {
if (err) {
return res.status(500).send(err);
}
if (user) {
user.signup.name = req.body.name;
user.signup.courseDay = req.body.courseDay;
user.signup.time = req.body.time;
user.signup.location = req.body.location;
user.signup.modified = req.body.modified;
user.update({$push: { "signup" :
{ name: user.signup.name,
courseDay: user.signup.courseDay,
time: user.signup.time,
location: user.signup.location,
modified: user.signup.modified
}
}},{safe:true, upsert:true},function(err){
if(err){
return res.status(500).send(err);
}
console.log("Successfully added" + user.signup);
res.send(user);
});
} else {
res.status(404).send();
}
});
});