All Questions
Tagged with loopbackjs strongloop
888 questions
0
votes
0
answers
11
views
How to add security headers in loopback4 web application?
I want to add the following security headers in my loopback4 application.
Strict-Transport-Security
Content-Security-Policy
X-Frame-Options
X-Content-Type-Options
Referrer-Policy
Permissions-Policy
...
- 111
0
votes
1
answer
60
views
What is the maximum records returned by Lookback 4 regardless of limit clause value?
In loopback 4, I know we can limit records like this
?filter={"limit":10}
but what is the biggest value I can set as limit? Also is there a value I can put there which is the same thing as ...
- 43.6k
0
votes
1
answer
487
views
How to add a unique constraints through Loopback 4 Model?
I have a Department model in my project. The properties are id, name. name of course should be unique. However I can't seem to look where the setting is so I can put something like
@model()
export ...
- 1,436
2
votes
1
answer
493
views
Is there a way to render Loopback 4 "/explorer" in collapsed mode by default
I have installed Loopback 4, and mounted my legacy Loopback 3 app into it as part of my migration - all good so far.
However my (swagger-ui shaped) explorer renders expanded by default - and there are ...
- 879
0
votes
1
answer
40
views
loopback4 application reads loopback3 models after migration
I migrated my loopback3 application to loopback4, as a last step of migration, I migrated loopback3 models, but when I change my model variables in loopback4, migrated application does not read that ...
- 105
1
vote
1
answer
485
views
How to create custom decorator in loopback4?
async checkUserMemberOfProduct(userId: string, productId: string) {
if (userId && productId) {
const user = await Product.find({ where: { userId: userId, id: productId } });
...
- 105
0
votes
1
answer
330
views
How to create interceptor for default repository methods in loopback4?
When I try to access default repository code I want to control some values before executing the default crud function in repository. How to I achive that?
ex:
...
@repository.getter('PersonRepository')...
- 105
1
vote
0
answers
485
views
gyp ERR! : `C:\Program Files (x86)\Microsoft Visual Studio\2017\BuildTools\MSBuild\15.0\Bin\MSBuild.exe` failed with exit code: 1
I just start learning the loopback and how it woks but getting error while installing the strongloop
npm install -g strongloop
gyp ERR! build error
gyp ERR! stack Error: `C:\Program Files (x86)\...
1
vote
1
answer
860
views
lb4 call another repository in different repository
What is the best way of calling different repository at the main repository? I tried to use Services. For example
...
@injectable({scope: BindingScope.TRANSIENT})
export class ProjectService {
...
- 105
1
vote
1
answer
164
views
How to add NOLOCK for Auto generated SQL queries in Loopback 3
I'm using Loopback 3 and SQL. We've 20 million rows in SQL tables and when we query data using Loopback it's taking a lot of time and further observation we found queries are blocking in SQL. Noticed ...
- 6,553
0
votes
0
answers
150
views
Is there a way to send very complex queries in loopback using curl?
I succeed when making simple queries in loopback, using curl, with fairly innocuous use of "or" and "and":
curl.exe -s -o %TEMP%\output.json -X GET --header "Content-Type: ...
- 164
0
votes
2
answers
1k
views
Call an existing API using Loopback 4
I have a pre-developed API connected to my backend. I am using loopback 4 as a data provider for my react application.
I want to call the API using Loopback and get the result in my application.
I ...
- 122
0
votes
1
answer
42
views
Which relation type to choose when having array of ids as part of the document
Every order has productIds property which is an array of productIds as explained bellow.
How should I implement the relations in StrongLoop \ Loopbck 3?
I couldn't find in the document the right ...
- 3,651
1
vote
0
answers
189
views
My generate files from lb4 openapi cli command doesn't find models folder
My OpenAPI api json files are in ./reference and refer to models in the ./reference/models folder - so when I attempt to generate controllers/models from the API files, it says it can't find the ./...
- 341
0
votes
1
answer
18
views
How to create register with relation model embeded?
I'm using Loopback 3 to create my application, with Postgres.
I've created a many-to-many usign hasManyThrough relation like this:
Product has many Composition
Ingredient has many Composition
Product ...
- 8,518
1
vote
1
answer
425
views
Loopback hasMany relation is not returning data
I'm using loopback 4 and loopback cli version is 2.2.1 and I'm using MongoDB connector as my data-source, When I try to filter data using API explorer I'm unable to fetch order details , hasMany ...
1
vote
1
answer
403
views
Loopback4 hasMany, keyFrom can be array?
I am trying to use hasMany relationship in loopback. I have problem while using it. I have an array, which is contains to ids from target model and I want to find all elements belongs to that array ...
- 105
0
votes
1
answer
173
views
"statusCode": 422 should be number in loopback 4
I have json object from angular as {"weight": "50"} but LoopBack 4 needs {"weight": 50}. How can I achieve this? I do not want to make any change in angular. Is there any settings in LoopBack 4?
...
- 11
0
votes
1
answer
117
views
How to alias/override the HTTP path of a default remote-method in Loopback
I have a model players which is extended from the base model User.
The player model inherits all the remote-methods from the base model. A new 'User' can be created by a POST /user in the base model.
...
- 1
0
votes
1
answer
188
views
Loopback 4 exception in authentication
I've followed along the loopback 4 tutorial for adding a jwt authentication to an application. It works but I have a question.
At the end of the guide there is :
On the picture we add security to ...
- 118
1
vote
2
answers
1k
views
Loopback 4:How to get Parent data based on combination of querying parent and related model
Relation: Customer hasMany Orders
Customer
id: number
name: string
Order
id: number
date: number
# assume relation on Customer with "orders" exists.
@belongsTo(Customer)
customerId: number
How to ...
- 76
2
votes
0
answers
617
views
Loopback Connector MongoDB - connection pooling
We are using [email protected] version to connect to mongo db . Our database admins are reporting that our application is using more connections and it is constantly growing. When they ...
- 21
0
votes
0
answers
75
views
count number of order every hour with loopback4
Salem,
I have tried to return the number of order per hour, so i need to extract the hour in the property createdAt in my order Model that's why i think to use The getHours() method returns the hour ...
- 25
0
votes
1
answer
23
views
Store variable for specific request on beforeRemote('create' and use it on afterRemote('create'
I want to store variable for specific request on beforeRemote('create' and use it on afterRemote('create'.
i know that i can store the variable on the model class variable but i am afraid that it will ...
- 3,651
0
votes
1
answer
100
views
createOptionsFromRemotingContext globally
Is there an option to specify this method globally so it will affect all the models or i need to specify it for every model i want to use it?
Customer.createOptionsFromRemotingContext = function(ctx) ...
- 3,651
2
votes
1
answer
471
views
Implement API key in loopback 4
I have an API in Loopback 4 that already has authentication implemented by JWT but I want to go one step further by implementing an API key so that only apps that request this API key can use the API.
...
0
votes
1
answer
49
views
Command line interface (CLI) not working after mounting lb3 to lb4 as documented
I mounted lb3 into lb4 app as documented but now i can not use lb cli and getting the following error: "Warning: Found no data sources to attach model. There will be no data-access methods available ...
- 3,651
1
vote
0
answers
190
views
Refresh token flow : Loopback
How to implement the refresh token flow in Loopback 3.x ?
Some have recommended to refresh the 'created' columns of access token table, so the access token does not expire. But this results in a '...
- 1,851
0
votes
1
answer
99
views
How to res.send something in loopback-next
I have a function that has a callback as shown below, and I want to return account that is returned in the callback as a response to the request for the function. How could I res.send the account (...
- 635
0
votes
1
answer
726
views
Intercepting all >= 500 error codes in a loopback application with strong-error-handler
I have a simple loopback.js application with strong-error-handler https://github.com/strongloop/strong-error-handler and the following code in middlewares/middleware.json
"final:after": {
"./...
- 4,728
1
vote
1
answer
1k
views
How can I work with Nested Objects in Loopback 4 using the cli b4 model command
I'm working with deep nested objects that I need to model for using lb4. Any chance I can get help with this sample JSON code?
{
"cardAcceptor": {
"address": {
"city": "Foster City",
"country": "RU",
...
0
votes
1
answer
86
views
Using hasMany relation and cascading ORM level in loopback4
I have created 2 models Author and Books where Author has hasMany relation with Book and Book has belongsTo relation with author.
While saving data using ORM models the cascading is not happening i.e ...
- 111
0
votes
1
answer
24
views
How to define an ACL policy applied globally for all models in a LoopbackJS application
Is there a way to define a global ACL which would apply to all models included in the Loopback application?
Ideally, this globally defined ACL could be overriden by an ACL defined in a model JSON file....
- 141
1
vote
0
answers
97
views
What is the difference between CrudRepositoryImpl and DefaultCrudRepository in loopback v4?
There are 2 repository implementation classes in loopback-next repo. The one that is used when a repository is created by CLI is DefaultCrudRepository. We have been using this in many places ...
- 943
1
vote
0
answers
30
views
Creating a flat single relationship in Loopback 3
Loopback has a way to make a light relationship using referencesMany where you can say something like:
{
"name": "SomeModel",
"plural": "SomeModel",
// ...,
"relations": {
"...
- 1,429
1
vote
0
answers
272
views
Loopback 4: Explorer error: Could not render n, see the console
I have this error in loopback4 explorer (see the image)
Image of the error
The API call works (I have try it in postman), but I can use it in the loopback explorer interface. Any idea?
In the ...
- 81
1
vote
0
answers
217
views
No response from the server- Loopback
Sometimes there is no response from loopback. This occurring in both development and production mode.
Code is a simple one that used to check whether the user is logged in or not.
Also, any console ...
- 1,124
0
votes
2
answers
460
views
How do you find an item in a repository by something other than id
If I have a repository with many properties and I want to find something by the non-id property, do I just find all and then return the data after a boolean comparison, or is there a better way to ...
- 635
1
vote
1
answer
2k
views
Save data into existing model instance in loopback
I have a model called ModelA which uses base class Model, not PersistedModel.
ModelA contains an existing Model instance which contains the following document.
{
"_id" : ObjectId("...
- 724
1
vote
0
answers
163
views
Issue with including related Model in loopback
I have two Models Customer and UserProviders
In Customer.json, have the following relation
"relations": {
"userProviders": {
"type": "hasOne",
"model": "UserProviders",
"...
- 724
0
votes
0
answers
333
views
Issue in creating instance method using prototype in loopback
I have two Models, ModelA & ModelB. Model B contains the following properties:
"properties": {
"firstname": {
"type": "string",
"required": true
},
"middlename": {
"...
- 724
0
votes
1
answer
109
views
How to connect manually to MongoDB Database in loopback?
I am trying to connect MongoDB database manually. So how is it possible to get the collection in MongoDB. I need to implement the code in custom js file and not in bootscript. If I include server.js ...
- 724
0
votes
0
answers
201
views
Loopback PeristentModel.findOne returns NaN Error
I am new to Node.js and loopback framework. What I am trying to achieve is find one model instance in loopback (Job Model here) that matches filter specification.
Link: https://apidocs.strongloop....
- 724
1
vote
4
answers
437
views
Access Token is not generating when extending User and Access Token Model - Loopback 3
I am new to loopback. So as a part of the learning process, started creating a sample API. Also extended User model as Customer and AccessToken as CustomerAccessToken. But the problem is that access ...
- 40
0
votes
2
answers
456
views
callback was already called! in loopback, in updateAll function
I'm using the loopback, here while making the update call with list of objects in array.
I get in the callback is already called!
The scene is, I have defined the callback inside the loop, and in ...
- 2,191
0
votes
1
answer
337
views
How can to implement recursion for loopback self relations?
I have a self relation in my model. How to implement recursion for parent-child hierarchy using self-join in loopback upto N-level?
The code given below will give us recursion only upto certain ...
0
votes
1
answer
37
views
Looback mongoDB relation in collection, get in ID only (not complete object related to fk)
Hello I am new in Loopback
Here I am using loopback, mongodb, currently I have two collection with me, i.e. Company and Employee.
In employee collection, I am referring the company as a foreign key ...
- 2,191
0
votes
1
answer
2k
views
LoopBack 4 REST API example for getting record with Mysql
i'm learning loopback 4, i have created model, repository and datasource, it also connected
to mysql and i can retrieve results from http://127.0.0.1:3000/myapi/{id}
in my default example getting ...
- 2,687
0
votes
1
answer
176
views
findOrCreate is not finding data in my db
I created a remote method to make multiple queries to my DB where I want to findOrCreate up to 12 users models at one time. In the loopback explorer I am passing this array, ["player0", "player1", "...
- 23
0
votes
1
answer
91
views
Loopback get data from one module to anothee
I am using loopback3 for file storage attachment.js and i have the persistedmodel career.js for storing the data. Now i want to fetch the file name in the career.js. how to do this.
career.js
'use ...
- 1,381