@tsed/platform-response-filter NPM

A package of Ts.ED framework. See website: https://tsed.io/

Features

Transform data returned by a method to a formatted response based on the stored metadata.

Installation

npm install --save @tsed/di @tsed/platform-views @tsed/schema @tsed/json-schema @tsed/platform-response-filter

Usage

Define a class that return data:

import {Injectable} from "@tsed/di";
import {Returns} from "@tsed/schema";
import {MyModel} from "../models/MyModel";

@Injectable()
class MyService {
  @Returns(200, MyModel)
  async getData() {
    return new MyModel({id: "id", test: "test"});
  }

  @Returns(200, MyModel)
  @View("myview.ejs")
  async getDataView() {
    return new MyModel({id: "id", test: "test"});
  }
}

Add a response filter for a specific content-type:

import {ResponseFilter, Context, ResponseFilterMethods} from "@tsed/common";

@ResponseFilter("application/json")
export class WrapperResponseFilter implements ResponseFilterMethods {
  transform(data: any, ctx: Context) {
    return {data, errors: [], links: {}};
  }
}

Then call the service in you module:

import {Module, DIContext} from "@tsed/di";
import {ResponseFilter} from "@tsed/platform-response-filter";
import "./filters/WrapperResponseFilter";

@Module()
class MyModule {
  @Inject()
  injector: InjectorService;

  @Inject()
  responseFilter: ResponseFilter;

  async onRequest(req: any, res: any) {
    const context = new DIContext({
      id: uuid.v4(),
      injector: this.injector,
      logger: this.injector.logger
    });

    // must implement these methods
    context.request = {
      accepts(...args: any[]) {
        return req.accepts(...args);
      },
      get(key: string) {
        return req.get(key);
      }
    };
    context.response = {
      contentType(contentType: string) {
        res.contentType(contentType);
      }
    };

    const service = this.injector.get<MyService>(MyService);
    let data = await service.getData();

    // serialize data (map Model to Plain object)
    data = await this.responseFilter.serialize(data, context);

    // call filter based on the right content type
    data = await this.responseFilter.transform(data, context);

    if (isObject(data)) {
      res.json(data);
    } else {
      res.send(data);
    }
  }
}

This example will call the getData() method, serialize the instance MyModel to a plain object then call the WrapperResponseFilter, to produce the following response:

{
  "data": {
    "id": "id",
    "test": "test"
  },
  "error": [],
  "links": {}
}

Contributors

Please read contributing guidelines here.

Backers

Thank you to all our backers! 🙏 [Become a backer]

License

The MIT License (MIT)

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

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@tsed/platform-response-filter v7.68.5

Features

Installation

Usage

Contributors

Backers

Sponsors

License