docs: add minimal example for usage with inversify

[nolazybits]

Description

Hello everyone.

Using the last version 0.12.2 I receive

Error: No matching bindings found for serviceIdentifier: CustomConstraint
    at _validateActiveBindingCount (/home/nodebrick/application/node_modules/inversify/lib/planning/planner.js:62:23)
    at _getActiveBindings (/home/nodebrick/application/node_modules/inversify/lib/planning/planner.js:48:5)
    at _createSubRequests (/home/nodebrick/application/node_modules/inversify/lib/planning/planner.js:85:26)
    at Object.plan (/home/nodebrick/application/node_modules/inversify/lib/planning/planner.js:136:9)
    at /home/nodebrick/application/node_modules/inversify/lib/container/container.js:317:37
    at Container._get (/home/nodebrick/application/node_modules/inversify/lib/container/container.js:310:44)
    at Container.get (/home/nodebrick/application/node_modules/inversify/lib/container/container.js:230:21)
    at InversifyContainerWrapper.get (/home/nodebrick/application/packages/nodebrick-core/src/di/InversifyContainerWrapper.ts:23:45)
    at getFromContainer (/home/nodebrick/application/node_modules/src/container.ts:53:44)
    at ConstraintMetadata.get [as instance] (/home/nodebrick/application/node_modules/src/metadata/ConstraintMetadata.ts:46:16)
Just wondering If some more changes need to be done
https://github.com/typestack/class-validator/search?q=getFromContainer&unscoped_q=getFromContainer

Just wondering If some more changes need to be done
https://github.com/typestack/class-validator/search?q=getFromContainer&unscoped_q=getFromContainer

Any ideas?

Thanks for all the hard work btw 👍

Environment

• nodejs: 12
• framework/library: nodebrick

class-validator version: 0.12.2

[nolazybits]

So I had to actually remove the use of the DI container all together it seems to have it working
Is that correct?

Before

        useContainer(
            new InversifyContainerWrapper(NodebrickCore._ContainerDI),
            {
                fallbackOnErrors: false,
                fallback: false,
            });

I removed the ☝️ code and it works. Is that the correct approach?

Cheers :)

[satanTime]

Without useContainer I think it doesn't solve dependencies and they are undefined, please check them in constructors of your validators.
And might you share code of CustomConstraint?

[harindaka]

@satanTime I'm facing this problem too using class-validator with inversify. I do not have a CustomConstraint class defined anywhere in my code. What could be the reason? Are there any instructions for using class-validator with inversify or a code sample?

[satanTime]

Hi @harindaka,

Is there a chance to create an example with min code to reproduce the issue?

[harindaka]

@satanTime ok after some googling, I found that it is necessary to use an adaptor for third party DI containers such as inversify to work. Obviously this must be the reason for me since I was not aware of that. It's not super obvious to someone who's only using class validator and not routing controllers. Maybe update the documentation for class-validator to link to that?

[satanTime]

@harindaka, yep, makes sense, might you create a PR? I think you know better how to describe it.

[harindaka]

@satanTime done

[dreamerblue]

Same issue. Any progress for supporting inversify?

[afraz-khan]

any official documentation piece for this?

[ttruongatl]

The following could be a solution!

// InversifyContainerAdapter.ts

import { Container } from "inversify";

export class InversifyContainerAdapter extends Container {
  public get<T>(serviceIdentifier: any): T {
    const id = serviceIdentifier;
    try{
     return super.get(id);
    }catch(e){
      this.bind(serviceIdentifier).to(serviceIdentifier).inSingletonScope();
    }
    return super.get(id);
  }
}

// App.ts

import { Container } from "inversify";
import { useContainer } from "class-validator";
import {InversifyContainerAdapter} from "./InversifyContainerAdapter";

const container = new InversifyContainerAdapter();
useContainer(container);

[LimbersMay]

@ttruongatl I tried your solution but now I get:

I am using routing-controllers, inversify and class-validator.

Error: Missing required @injectable annotation in: Validator. node-app | at getTargets (/usr/src/app/node_modules/inversify/src/planning/reflection_utils.ts:32:11) node-app | at getDependencies (/usr/src/app/node_modules/inversify/src/planning/reflection_utils.ts:14:10) node-app | at /usr/src/app/node_modules/inversify/src/planning/planner.ts:179:43 node-app | at Array.forEach (<anonymous>) node-app | at _createSubRequests (/usr/src/app/node_modules/inversify/src/planning/planner.ts:164:18) node-app | at plan (/usr/src/app/node_modules/inversify/src/planning/planner.ts:240:5) node-app | at /usr/src/app/node_modules/inversify/src/container/container.ts:623:25 node-app | at InversifyContainerAdapter.Container._get (/usr/src/app/node_modules/inversify/src/container/container.ts:574:37) node-app | at InversifyContainerAdapter.Container._getButThrowIfAsync (/usr/src/app/node_modules/inversify/src/container/container.ts:580:25) node-app | at InversifyContainerAdapter.Container.get (/usr/src/app/node_modules/inversify/src/container/container.ts:325:17)