node.js

问题 I have logic in my onMembersAdded function to load the user state and see if userData.accountNumber attribute exists. If it does not, a run an auth dialog to get the user's account number. If the attribute does exist, the welcome message should be displayed without a prompt. When I test on local, this works fine. But when I test on Azure, I always end up in the !userData.accountNumber block. Through checking the console log, I can see that in the onMembersAdded function is showing {} for the

问题 I have deployed an app in Heroku using Django. The Django program uses a SQLite database db.sqlite3 on root directory to populate its page. Separately, there is also a Node.js scraper program that inserts to that database. The problem is that the hard-refreshed webpage shows the same data even after the content of the database changed. Curiously, this does not happen when it is tested locally with python manage.py runserver . How can I fix this problem? Thank you in advance! For reference,

问题 So far I've only been able to get text and links from what other people on my discord channel type, but I want to be able to save posted images/gifs. is there any way I can do this through the bot or is it impossible? I'm using discord.js. 回答1: Images in Discord.js come in the form of MessageAttachments via Message#attachments . By looping through the amount of attachments, we can retrieve the raw file via MessageAttachment#attachment and the file type using MessageAttachment#name. Then, we

问题 file is not uploading in nodejs it shows error which is: nodemon app crashed - waiting for file changes before starting... nodejs code: var path = require('path'); var express = require('express'); var multer = require('multer'); var app = express(); var Storage = multer.diskStorage({ destination: './public/uploads/', filename: (req, file, cb) => { cb(null, file.fieldname+"-"+Date.now()+path.extname(file.orignalname)); } }) var upload = multer({ storage: Storage }).single('file'); app.use

问题 I need to push data in nested subdocument array(replyComment): This is an example of a document from my database: { comments: [ { replyComment: [], _id: 601a673735644c83e0aa1be3, username: 'xyz123@gmail.com', email: 'xyz213@gmail.com', comment: 'test123' }, { replyComment: [], _id: 601a6c94d1653c618c75ceae, username: 'xyz123@gmail.com', email: 'xyz123@gmail.com', comment: 'reply test' } ], _id: 601a3b8038b13e70405cf9ea, title: 'latest test', snippet: 'latest test snippet', body: 'latest test

问题 I have a react project in which I would like to use this native node.js addon, which is a wrapper for a C++ SDK. I've successfully used this module in the past within an Electron project, and can run the sample successfully with node as well. My question is how I would be able to use this in React, or write my own React friendly solution using the C++ SDK. I've tried to clone the module and place it under a lib folder in my react project, I ran npm install within that folder to install it's

问题 I am trying to convert old mongoose promise code to Native ES6 Promise. I am getting all the errors thrown in catch and I can log it in console but when I try to pass it to response object I get empty object. Following is my code module.exports.login = function(req, res) { var userPromise = User.findOne({email:req.body.email}).exec(); userPromise.then(function(user) { if(!user){ throw new Error("step 1 failed!"); } }) .then(function(user) { if(!user.comparePassword(req.body.password)){ throw

问题 I am trying to convert old mongoose promise code to Native ES6 Promise. I am getting all the errors thrown in catch and I can log it in console but when I try to pass it to response object I get empty object. Following is my code module.exports.login = function(req, res) { var userPromise = User.findOne({email:req.body.email}).exec(); userPromise.then(function(user) { if(!user){ throw new Error("step 1 failed!"); } }) .then(function(user) { if(!user.comparePassword(req.body.password)){ throw

问题 I have a project that built fine with ng build --prod until I upgraded the version of TypeScript from 2.72 to 2.92 in my package.json. After upgrading, I now get the following error: ERROR in Cannot read property 'Symbol(Symbol.iterator)' of undefined However, the project builds fine using ng build and runs fine using ng serve so I have no idea where this problem is occurring and the error doesn't tell me where the problem is in my project. 回答1: I found the issue. Using resolveJsonModule

问题 I'm using nodejs with express 4. I'm trying to upload multiple file through a single input field. Also I submit my form through ajax. I'm using express-fileupload middleware for uploading files. When i upload multiple files, it works fine. But when upload a single file, it's not working. html code- <input type="file" name="attach_file" id="msg_file" multiple /> ajax code- var data = new FormData(); $.each($('#msg_file')[0].files, function(i, file) { data.append('attach_file', file); }); $