strongloop/loopback

LoopBack is an open source Node.js framework built on top of Express optimized for mobile, web, and other devices. Connect to multiple data sources, write business logic in Node.js, glue on top of your existing services and data, connect using JS, iOS & Android SDKs.

hgeldenhuys

@hgeldenhuys

Thanks a million @codejamninja

Jam Risser

@codejamninja

@hgeldenhuys thanks. Glad I could help. I was confused by your question at first.

hgeldenhuys

@hgeldenhuys

Sorry, I probably could have phrased it a bit better. Probably juggling too many new ideas atm

Jam Risser

@codejamninja

@hgeldenhuys no prob

Diana Lau

@dhmlau

@MoribundMedium . Thanks. :)
Please take a look at my example: https://github.com/dhmlau/loopback4-github-analytics/blob/master/src/services/query.service.ts. If what's returned have more properties than you want in the application, you can create an interface with the exact properties you want.

Darko Damljanović

@darko.damljanovic1_gitlab

How to ad authorization bearer in openapi from controllers. Is there a way to move openapi definitions to a separate file?

Sulejman Sarajlija

@Sulejman

Hey guys, does anyone know how to update summaries for custom remote methods (REST API endpoints) so that they appear in explorer and in swagger file when exported?

Nico Flaig

@nflaig

@dhmlau Hi, I noticed that all your node modules publish their src files is there a particular reason for this? I thought the build .js files and .d.ts files are all that needs to be published

Darko Damljanović

@darko.damljanovic1_gitlab

How to enable CORS? My loopback 4 application constantly blocks request from the outside source, even though, documentation says that CORS is enabled?

Abel

@0bot

Hi guys, is there any example to use Loopbackjs with i18n ?

Matthew Miller

@mamiller93

@darko.damljanovic1_gitlab did you figure out the authorization bearer in openapi question?

Eduardo Mazzucchelli

@emazzu

hi, how are you ?
I m going to use the loopback 3.3, I can do a docuement preview with loopback-component-storage ??

Jyoti Chhetri

@jyoti-openair

Hi, please anyone can suggest, I need to automatically fill a field by the loggedin userId.

ex; I have a model account which has field createdBy. I dont want to send createdBy from the front end but, want to set it as the loggedin user Id whenever new account is added. Is there a way to do this ?

Matthew Miller

@mamiller93

@jyoti-openair I would think you’d need to create a helper function that returns the logged in user and when you’re saving your instance of a model (through your repo), fill in that logged in user?

unless there’s another magical way in loopback that I don’t know of (not terribly familiar with it all yet)

or maybe there’s a binding that can give you the current user?!

Jyoti Chhetri

@jyoti-openair

@mamiller93 ok, I figured out using the after save hook, and updating the createdBy with the current user.

The problem now is ctx.options as well as ctx.hookState is empty. This is where I could access the logged in user

Matthew Miller

@mamiller93

@jyoti-openair you couldn’t get the current user at save but only after save?

Jyoti Chhetri

@jyoti-openair

@mamiller93 no,

Model.observe('after save', function(ctx, next) {
//could not get it here ctx.options and ctx.hookState is empty

});

Sebastian Torres

@SebTorres

Hello. Has anyone here implemented Auth0 in a LB4 app? I am kind of new ad having trouble with this

Darko Damljanović

@darko.damljanovic1_gitlab

@mamiller93 unfortortunatelly no. I had no luck how to add input field in swagger. I did however manage to visually represent that end point is secured (lock icon).

@mamiller93 I have found what was wrong with the CORS. It was not Loopback at all.

Jyoti Chhetri

@jyoti-openair

HI, please anyone can tell me how I can do inner join

Ex: I have members table which is referencing the user

what I do it /members?filter={"include": ["user"]}

The problem here is its doing a left join, where as what I need is I need list of members who is also user . It also lists members who are not users. Is there a way to fix this ?

Hudison Souza

@Hudison

Hi, i need some advice. Me and my team will develop some applications that will communicate with other, this application will work basically like this:
A front-end application built with react that communicates with an API. The way that this API will work is: each one of our clients will have an individual database, their users will access our front-end app, this app will locate in a Database that contains the information of, what is their enterprise and will return some connection information for them. After this, each user will have the information of what is their enterprise, and our API will take this info and connect in the database and take the data. My questions are that I don't know the best way to do this (instantiate a datasource in each request and disconnect after || after a user of enterprise x connects, I will make this connection open while are active users on that enterprise || other solution)? And I'm wrong trying to use lb4 for this scenario?

Matthew Miller

@mamiller93

How does loopback handle mapping tables?

For example, patients and providers. Each patient could have multiple providers. Multiple patients could share providers. It’s not a strict one to many relationship. Our database has mapping tables to begin with.

I’m thinking we’ll still need to create belongsTo/hasX relations from the patient table to the mapping table and then again the mapping table to the provider table. And to get them, we’ll just have to go patientRepo.providermaps(patient.id).providers or something?

Richard Terungwa Kombol

@rkterungwa16

Hello everyone. How do you handle loggin in loopback4?

Nico Flaig

@nflaig

@rkterungwa16 We are using JWTs with access tokens and refresh tokens since we have a stateless microservice architecture which means there are no sessions

Richard Terungwa Kombol

@rkterungwa16

@nflaig . Thanks for the response. I meant logging using winston, bunyan or any other of the logging tools.

Nico Flaig

@nflaig

@rkterungwa16 sorry mb for some reason I read login. We have our own solution but it is based on winston.

Abhisek Pattnaik

@abhisekp

:question: :raising_hand: Is there any way to ignore linting while building the loopback project?

Jesus Maria Zabaleta Franco

@jesuszabaletafranco

Hello everyone

Darko Damljanović

@darko.damljanovic1_gitlab

Is there a way to link openapi specs from a separate file in order to keep controllers as clean as possible? I dont know what Im doing wrong, but it seams that even simple respose wont show as documented.

Ihar Salauyou

@igrslv

Hi, in loopback 4 what is the best and correct approach defining operational hooks? I have tried to add them in the model class but they are not triggered at all.

Mark Injerd

@pilot51

Does anyone have the mssql or email connectors working in lb4? The documentation isn't much help since it seems to be for lb3 (even though it's under lb4).

Richard Terungwa Kombol

@rkterungwa16

Hi @nflaig is there a way I can see how you implemented it?

Nico Flaig

@nflaig

Hi @rkterungwa16 it is nothing special tbh, you can log almost all errors in sequence.ts before reject(err). For additional logging just add it where you need it. I am pretty sure how we are doing it right now is not the best solution but it works. I am not to sure what exactly you are looking for, i hope this helped.

Richard Terungwa Kombol

@rkterungwa16

@nflaig this helps, thanks. However, it would be great if there was a standard loopback4 way of doing logging.

Radomir Djurdjevic

@Rasha-Dj

Hi everyone! Is there a way to define JSON API properties in snake case? It seems to be in camel case by default and I'm not finding any config option to change that. Help is appreciated!

Marco Strijker

@Octopixell

Hi all, am I correct in thinking you can only have one LB4 sequence? Not several?

Richard Terungwa Kombol

@rkterungwa16

Hello everyone. Is creating a validation component a bad idea? To expand further. I want to create a component that will handle validation for different api inputs. These different validation logic are going to be strategies. I don't know if this makes though. I am aware of validation for controller request body, but I need flexibility for more fine grained use cases.

Nico Flaig

@nflaig

Hi @rkterungwa16, in the loopback4 example shopping app they are using interceptors for input validation for example here. I have not implemented such a thing myself so I am not sure if this is the best appraoch. You might want to ask your question on stackoverflow using the #loobackjs and #loopback4 tags. It is more likely you get a good answer there.

@rkterungwa16 I just saw that interceptors can also be used for logging maybe that might be interesting for you as well https://loopback.io/doc/en/lb4/Interceptors.html

Richard Terungwa Kombol

@rkterungwa16

Thanks a lot @nflaig. I will take a look at it.

Pradeep Kumar Tippa

@pktippa

@bajtos what are design patterns that are involved in building LB4

Please

Darko Damljanović

@darko.damljanovic1_gitlab

Is there any way to make transaction for multiple database inserts? If there is possibility, how to implement it?

Darko Damljanović

@darko.damljanovic1_gitlab

@bajtos If we want to make transactions using multiple entities and their repositories, do we have to extend "DefaultTransactionalRepository" on every repository that is going to be a part of a transation?

Darko Damljanović

@darko.damljanovic1_gitlab

@mamiller93 Unfortunately no. Although, I was somewhat successful to separate OpenApi3 specs to another file using namespaces. I had to make RequestBody and ResponseObject separately and map them within "@operation()" decorator of a controller.

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:question: :raising_hand: Is there any way to ignore linting while building the loopback project?