class-validator | Decorator-based property validation for classes | Validation library

by typestack TypeScript Version: 0.14.1 License: MIT

X-Ray Key Features Code Snippets(1)Community Discussions(10)Vulnerabilities Install Support

kandi X-RAY | class-validator Summary

class-validator is a TypeScript library typically used in Utilities, Validation applications. class-validator has no bugs, it has no vulnerabilities, it has a Permissive License and it has medium support. You can download it from GitHub.

Decorator-based property validation for classes.

Support

Quality

Security

License

Reuse

Support

class-validator has a medium active ecosystem.

It has 9466 star(s) with 706 fork(s). There are 64 watchers for this library.

There were 1 major release(s) in the last 12 months.

There are 201 open issues and 709 have been closed. On average issues are closed in 240 days. There are 17 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of class-validator is 0.14.1

Quality

class-validator has 0 bugs and 0 code smells.

Security

class-validator has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

class-validator code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

class-validator is licensed under the MIT License. This license is Permissive.

Permissive licenses have the least restrictions, and you can use them in most projects.

Reuse

class-validator releases are available to install and integrate.

Installation instructions, examples and code snippets are available.

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class-validator Key Features

No Key Features are available at this moment for class-validator.

class-validator Examples and Code Snippets

How to use regexp for validate in nestjs?

Lines of Code : 10

License : Strong Copyleft (CC BY-SA 4.0)

Copy

class ArticleParamDTO {
  @Matches('[a-z0-9\-]+') // comes from class-validator
  article: string;
}

@Get(':article')
getIndex(@Param() { article }: ArticleParamDto) {

}

Community Discussions

Trending Discussions on class-validator

How to use enhancers (pipes, guards, interceptors, etc) with Nestjs Standalone app

Nest.js - "Invalid command: start"

Why are class-validator decorators removing properties when used with class-transformer

How to access the request object before a Guards NestJS

NestJs reusable controller with validation

class-validator relational validation with custom error messages

Supertest return a different body

MongoDB and class-validator unique validation - NESTJS

Transpiled JavaScript code fails when I use decorator with gas-webpack-plugin

Nestjs Optional DTO during the Unit test

QUESTION

How to use enhancers (pipes, guards, interceptors, etc) with Nestjs Standalone app

Asked 2022-Apr-09 at 00:28

The Nestjs module system is great, but I'm struggling to figure out how to take full advantage of it in a Serverless setting.

I like the approach of writing my domain logic in *.service.ts files, while using *.controller.ts files to take care of non-business related tasks such as validating an HTTP request body and converting to a DTO before invoking methods in a service.

I found the section on Serverless in the nestjs docs and determined that for my specific use-case, I need to use the "standalone application feature".

I created a sample nestjs app here to illustrate my problem.

The sample app has a simple add() function to add two numbers. I use class-validator for validation on the AddDto class.

...

ANSWER

Answered 2022-Apr-09 at 00:28

It occurred to me while writing this behemoth of a question that I can simply use class-validator and class-transformer in my Lambda handler.

Source https://stackoverflow.com/questions/71804196

QUESTION

Nest.js - "Invalid command: start"

Asked 2022-Apr-07 at 18:09

This app worked for a long time in docker container and recently it even doesn't launch.

In docker container I've this error:

...

ANSWER

Answered 2022-Apr-07 at 18:09

The @nestjs/cli dev dependency should be up on version 8 with the rest of the @nestjs/ dependencies. @nestjs/cli v5 doesn't have a start command

Source https://stackoverflow.com/questions/71783092

QUESTION

Why are class-validator decorators removing properties when used with class-transformer

Asked 2022-Mar-29 at 10:37

I'm trying to use class-validator and class-transformer to perform validation on API requests in a Next.js API route.

I've put together this basic API handler to demonstrate:

...

ANSWER

Answered 2022-Mar-29 at 10:37

The problem might be that your babel is not configured properly.

Try to put this into your babel.config.js (create the file if you don’t have it already):

Source https://stackoverflow.com/questions/71554886

QUESTION

How to access the request object before a Guards NestJS

Asked 2022-Mar-23 at 19:25

I have this route here:

...

ANSWER

Answered 2022-Mar-23 at 19:25

Guards are always ran before other enhancers as it is stated in the docs. The only way to run a guard before another guard is to put it at a higher priority (either at a handler level above [e.g. original guard is route handler level so new guard is at controller level]) or to put it before the guard in the @UseGuards(). The other option you have would be to run a middleware to validate your body here.

Source https://stackoverflow.com/questions/71592878

QUESTION

NestJs reusable controller with validation

Asked 2022-Mar-23 at 07:58

Most of my NestJs controllers look the same. They have basic CRUD functionality and do the exact same things.

The only differences between the controllers are:

the path
the service that is injected (and the services are all extended from an abstract service)
the entity that is returned from the methods
the create, update, and query dtos

Here is an example CRUD controller:

...

ANSWER

Answered 2022-Mar-23 at 07:58

I have managed to make it work using this answer https://stackoverflow.com/a/64802874/1320704

The trick is to create a controller factory, and use a custom validation pipe.

Here is the solution:

Source https://stackoverflow.com/questions/71394797

QUESTION

class-validator relational validation with custom error messages

Asked 2022-Mar-22 at 10:46

so I was building an API where by user gives us type and value in the request body, type could be CNIC, EMAIL, MOBILE

Now based on the type I have to validate the value like if EMAIL is valid or if MOBILE is valid etc.

So as we can see that value field depends on the type field to validate it.

I need a way to handle this using class-validator validationPipe.

...

ANSWER

Answered 2022-Mar-22 at 10:46

So at first I quickly opened the docs and started looking up for advance usage and I came to know that custom decorator would definitely help me and it did using bellow example.

validate-value-by-type.decorator.ts

Source https://stackoverflow.com/questions/71569580

QUESTION

Supertest return a different body

Asked 2022-Mar-18 at 10:22

I have an e2e test where I test the registration (email unique)

The Test is:

...

ANSWER

Answered 2022-Mar-15 at 10:22

I don't see how your E2E test bootstraps the app but make sure all transformation pipes are included and everything else that might be involved altering error response.

To get the same effect in the e2e test always include the setup you have in main.ts except swagger docs or some unrelated stuff.

in your case, I'd try this

Source https://stackoverflow.com/questions/71472433

QUESTION

MongoDB and class-validator unique validation - NESTJS

Asked 2022-Mar-18 at 10:22

TL;DR

I am trying to run mongoose query in my validator

Hello, I am trying to make a custom decorator which throws an error if a value for that field already exists. I am trying to use the mongoose model inside the class that validates the route. Unlike in resolver/controller, @InjectModel() does not work in validator class. My validator is like this

...

ANSWER

Answered 2022-Mar-18 at 10:22

According to this issue (you can't inject a dependency)

You should to add in your main.ts

Source https://stackoverflow.com/questions/69545580

QUESTION

Transpiled JavaScript code fails when I use decorator with gas-webpack-plugin

Asked 2022-Mar-11 at 03:42

EDIT1:I made a minimum reproduction repository here
code & reproduction steps are available at the repository.
EDIT2: Same error occurs when I embeded the transpiled code on html file.

EDIT3: I tracked down the main cause of this problem.
When I use gas-webpack-plugin, output file pukes this error. Simply removing the plugin solves the problem, but then I cannot access my main function on GAS.
I created a github issue on the official gas-webpack-plugin . Hope there's a workaround for this.

---Original question from here---

I'm using Clasp + Typescript + Webpack + Babel to locally develop GAS with npm libraries.
Until I used decorator in my project, it was working fine. However, using decorator(more precisely, class-validator) results in following error on GAS...

...

ANSWER

Answered 2022-Mar-11 at 03:37

I talked to the author of the gas-webpack-plugin. https://github.com/fossamagna/gas-webpack-plugin/issues/685

When using decorators, gas-webpack-plugin exposes not only main() but also classValidatorMetadataStorage() to the top level. By simply removing this from the transpiled file, I was able to run the code with decorators.

But we now don't have to do this manually now. The author already took care of the situation. As of gas-webpack-plugin@2.2.0, it has include option to avoid unnecessary function exposure.

Usase:

Source https://stackoverflow.com/questions/71321383

QUESTION

Nestjs Optional DTO during the Unit test

Asked 2022-Mar-03 at 20:29

I have a simple controller:

...

ANSWER

Answered 2022-Mar-03 at 20:29

if password is optional (ie., can be undefined), then tell to TS it is: password?: string

Source https://stackoverflow.com/questions/71341335

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install class-validator

Note: Please use at least npm@6 when using class-validator. From npm@6 the dependency tree is flattened, which is required by class-validator to function properly.

Support

For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

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