loopback4

问题 Recently loopback team added support to the inclusion of nested relation. Reference https://loopback.io/doc/en/lb4/HasMany-relation.html#query-multiple-relations. But it doesn't cover the rest api url to get nested relations. This is what I have tried. http://[::1]:3000/users?filter[include][0][relation]=carts&filter[include][0][scope]filter[include][0][relation]=product I have three models users, carts, products. Users have has-many carts and carts belongs-to product. My loopback/cli version

问题 I'm trying to convert my Nodejs Express app to Loopback 4 and I can't figure out how to increment a counter. In my Angular 9 app when a user clicks an icon a counter is incremented. This works perfectly in Express In Express const updateIconCount = async function (dataset, collection = 'icons') { let query = { _id: new ObjectId(dataset.id), userId: dataset.userId }; return await mongoController.update( collection, query, { $inc: { counter: 1 } }, function (err, res) { logAccess(res, 'debug',

来源： https://stackoverflow.com/questions/61978534/how-to-implement-chained-models-with-loopback-4-without-getting-a-circular-depen

问题 I have followed this link for creating custom service for authentication in loopback 4. I successfully created the service but while binding this service in application.ts I am getting the following error. Argument of type 'typeof CustomUserService' is not assignable to parameter of type 'Constructor>'. Construct signature return types 'CustomUserService' and 'UserService' are incompatible. The types returned by 'verifyCredentials(...)' are incompatible between these types. Type 'Promise' is

问题 I have followed this link for creating custom service for authentication in loopback 4. I successfully created the service but while binding this service in application.ts I am getting the following error. Argument of type 'typeof CustomUserService' is not assignable to parameter of type 'Constructor>'. Construct signature return types 'CustomUserService' and 'UserService' are incompatible. The types returned by 'verifyCredentials(...)' are incompatible between these types. Type 'Promise' is

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'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 My model has a Composite Primary Key, composed by 3 columns. When I try to create everything using commands: lb4 model lb4 repository lb4 controller I can't find the way to specify those three camps combined are the PK, or to simply don't specify the id at all. The firt step i'm forced to write an id is on the repository generator When reaching lb4 controller step it force me to specify an id again I'm new using this framework, and tried to search more info about this but unsuccessfully 回答1: