loopbackjs

问题 I'm trying to create a system that would read a file from another site and serve this as a file download to the user. The file size could vary from Mbs to Gbs. I have have already created a proof of concept using vanilla nodejs. const app = express(); app.get('/', (req, res) => { res.setHeader('Content-disposition', 'attachment; filename=FILENAME'); res.setHeader('Content-type', 'application/octet-stream'); http.get('URL_TO_FILE', data => { data.pipe(res); }); }); I would like to do this

问题 I'm trying to create a system that would read a file from another site and serve this as a file download to the user. The file size could vary from Mbs to Gbs. I have have already created a proof of concept using vanilla nodejs. const app = express(); app.get('/', (req, res) => { res.setHeader('Content-disposition', 'attachment; filename=FILENAME'); res.setHeader('Content-type', 'application/octet-stream'); http.get('URL_TO_FILE', data => { data.pipe(res); }); }); I would like to do this

问题 I have a local MySQL database mydb . It contains a table called person , with fields id (primary key, integer auto-increment) and name (text). The table contains records that I do not want to delete. I want a LoopBack app that connects to mydb through a data source myds . The app should have a model Person (which extends PersistedModel ). CRUD operations on the Person model should be reflected on the people table of mydb . How do I build the app? 回答1: Generate an empty application with the

问题 I am running a node strongloop application and need for it be auto-restarted if it crashes. what is the best way to auto restart a node application? Also is there anyway to be notified when these crashes occur? 回答1: You could use process managers like Strongloop process manager (http://strong-pm.io/), PM2 (http://pm2.keymetrics.io/) and Forever (https://github.com/foreverjs/forever). Also check the comparison of these three (http://strong-pm.io/compare/). You can also check pm2-monitor (https

问题 I am running a node strongloop application and need for it be auto-restarted if it crashes. what is the best way to auto restart a node application? Also is there anyway to be notified when these crashes occur? 回答1: You could use process managers like Strongloop process manager (http://strong-pm.io/), PM2 (http://pm2.keymetrics.io/) and Forever (https://github.com/foreverjs/forever). Also check the comparison of these three (http://strong-pm.io/compare/). You can also check pm2-monitor (https

问题 I am running a node strongloop application and need for it be auto-restarted if it crashes. what is the best way to auto restart a node application? Also is there anyway to be notified when these crashes occur? 回答1: You could use process managers like Strongloop process manager (http://strong-pm.io/), PM2 (http://pm2.keymetrics.io/) and Forever (https://github.com/foreverjs/forever). Also check the comparison of these three (http://strong-pm.io/compare/). You can also check pm2-monitor (https

问题 I am running a node strongloop application and need for it be auto-restarted if it crashes. what is the best way to auto restart a node application? Also is there anyway to be notified when these crashes occur? 回答1: You could use process managers like Strongloop process manager (http://strong-pm.io/), PM2 (http://pm2.keymetrics.io/) and Forever (https://github.com/foreverjs/forever). Also check the comparison of these three (http://strong-pm.io/compare/). You can also check pm2-monitor (https

问题 How to support transaction in Loopback4? Is there a decorator for the same, something like @Transaction? I looked into the documentation here https://loopback.io/doc/en/lb4/Repositories.html but nothing is mentioned about the transaction. 回答1: LoopBack 4 does not support transactions out of the box. Please open a new GitHub issue to discuss how to implement this feature: https://github.com/strongloop/loopback-next/issues/new 回答2: LoopBack 4 now supports database transactions for quite a while

问题 In v3, we could define middlewares on underlying Express, such as express-session, to add a session property on requests objects. In v4, it looks like there is no equivalent for this, and the underlying Express is not exposed. I am migrating an authentication provider from v3 to v4 and I'm stuck because of that. How can I do? I tried the following workaround but it didn't work: import { MyApplication } from './application'; import { ApplicationConfig } from '@loopback/core'; const

问题 i am doing some practice with loopback 4, following the tutorial todo-list https://loopback.io/doc/en/lb4/todo-list-tutorial.html i am trying to query data to gel todo-lists and related todos GET http://127.0.0.1:3000/todo-lists?filter[include]=todos i get an error 500 : relations "todos" not defined for the model TodoList The route GET http://localhost:3000/todo-lists/1/todos works properly, but i'd like to retrieve lists and related todos. I read many posts and the documentation but i do