Tips for creating a TypeScript model for API responses

Question

Tips for creating a TypeScript model for API responses

Looking for guidance on designing a model in TypeScript to handle the following response:

{
    "data":[
            {
                "name": "XYZ",
                "id": "1"
            },
            {
                "name" :"Abc",
                "id": "2"
            }
        ]
}

This is what I have tried so far:

export class DataResponse<T>{
    data: T;
}

export class MyModel{
    name: string;
    id: number;
}

What would you recommend for handling situations where all the data will be part of { data: THE_DATA_OBJECT }?

{
    data: []
}

getInfo(): Observable<DataResponse<MyModel[]>> {
    // Make API HTTP Call here
}

angular typescript

Answer 1

Answer №1

It is recommended to use an interface or type instead of a class for representing an HTTP response, as deserialized JSON values from HTTP requests will not be instances of a class.

@Angular StyleGuide
It is advised to consider utilizing interfaces for data models.

export interface Model{
        id: number;
        name: string;
    }

export interface ResponseModel{
         data:Array<Model>;
  }

getInfo(): Observable<responseModel>{
return this._httpClient.get<resposneModel>('url);
}

Answer 2

It is recommended to use an interface or type instead of a class for representing an HTTP response, as deserialized JSON values from HTTP requests will not be instances of a class.

@Angular StyleGuide
It is advised to consider utilizing interfaces for data models.

export interface Model{
        id: number;
        name: string;
    }

export interface ResponseModel{
         data:Array<Model>;
  }

getInfo(): Observable<responseModel>{
return this._httpClient.get<resposneModel>('url);
}

Answer 3

Answer №2

data must be of type model[], with the entire response being of type responseModel

export class responseModel{
   data:model[];
}
export class model{
  name:string;
  id: number;
}

fetchInfo(): Observable<responseModel> {
// Make API HTTP Request
}

Answer 4

data must be of type model[], with the entire response being of type responseModel

export class responseModel{
   data:model[];
}
export class model{
  name:string;
  id: number;
}

fetchInfo(): Observable<responseModel> {
// Make API HTTP Request
}

Answer 5

Answer №3

When faced with a similar situation in the past, I found that addressing backend endpoints for my project was a bit repetitive. All responses from these endpoints contained { data: THE_DATA_OBJECT }, leading to response models starting with a "data" prefix. To streamline this process, instead of structuring all response models with the same prefix, I chose to unwrap the "data" prefix within my api service.

For instance, my approach looked something like this:

genericHttpCall<T>(path: string, method: string, params: any}: Observable<T> {
  return this.httpClient.request().pipe(map(response => response.data));
}

This method allowed me to avoid creating numerous class responseModel<T> structures and focus on designing the actual model without being influenced by the backend's structure.

In addition, I prefer using interfaces over classes for response models since they serve as plain data models and do not require constructors or methods, unless adjustments are necessary for specific business logic.

Answer 6

When faced with a similar situation in the past, I found that addressing backend endpoints for my project was a bit repetitive. All responses from these endpoints contained { data: THE_DATA_OBJECT }, leading to response models starting with a "data" prefix. To streamline this process, instead of structuring all response models with the same prefix, I chose to unwrap the "data" prefix within my api service.

For instance, my approach looked something like this:

genericHttpCall<T>(path: string, method: string, params: any}: Observable<T> {
  return this.httpClient.request().pipe(map(response => response.data));
}

This method allowed me to avoid creating numerous class responseModel<T> structures and focus on designing the actual model without being influenced by the backend's structure.

In addition, I prefer using interfaces over classes for response models since they serve as plain data models and do not require constructors or methods, unless adjustments are necessary for specific business logic.

Tips for creating a TypeScript model for API responses

Answer №1

Answer №2

Answer №3

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