Developing with intricate JSON data through HTTP requests in Angular application (MEAN STACK)

Currently, I am facing a challenge while working on my project which involves processing "large" JSON files. These files are fetched from an online MongoDB (Mongo Atlas) and accessed through a simple node JavaScript REST API. The complexity of the JSON data is making it difficult for me to figure out how to proceed. Typically, I would create a model to handle such JSON structures, but in this particular case, I am unsure about the approach to take. You can view the schema here.

The JSON has numerous nested arrays, which raises the question: should I use classes or interfaces? Would I need to create a new class for each array?

Previously, I was using the following model in JavaScript: (but this does not work in TypeScript due to undefined object)

    export class Match{
        constructor(
            public _id: string,
            public game: Object
        ){}
    }

I am aware that I could potentially import the entire Swagger UI into my project, although I am uncertain about the process (https://www.npmjs.com/package/swagger-ts-generator). However, I only require the specific schema mentioned above.

Any guidance or assistance on this matter would be greatly appreciated.

jsonangulartypescriptschema

Answer №1

When it comes to handling a JSON that exceeds a certain length, I tend to avoid using models on the Java side and don't use them at all in Angular. This approach has its pros and cons, especially in a typescript context where it may not be the recommended practice but gets the job done.

  public fetchData(): Observable<any> {
    return this.http.get(environment.apiBaseUrl + "/data/", this.prepareHeader());
  }

Simply subscribe to the Observable and access the necessary variables by their keys:

this.dataFetchService.fetchData().subscribe(
  (res) => {
    this.data = res;
    for (let i = 0; i < this.data.length; i++) {
      if (!this.selectGroups[this.data[i].name]) this.selectGroups[this.data[i].name] = [];
      this.selectGroups[this.data[i].name].push(this.data[i]);
    }
  },
  (err) => this.dataFetchService.handleErrorResponse(err)
)

Ultimately, personal preference and expectations play a role as both approaches can achieve the desired outcome. One might be criticized as unorthodox while the other seen as too laborious.

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