Explore the world of data manipulation in Angular by experimenting with different

Question

Explore the world of data manipulation in Angular by experimenting with different

Embarking on a fresh Angular 2 project centered around Photos and Users.

The backend work is all done, with the API in place. I've already constructed those classes.

Now, I find myself pondering...
To manipulate these objects on the client end, would it be better to rewrite the classes in typescript?

let photo = new Photo(1, "http://url", "Some title");

or simply stick with standard objects?

let photo = {
    id: 1,
    url: "http://...",
    title: "Some title"
}

Which route should I take?

The first option entails duplicating the model (first on server, then on client side).
The second choice feels a bit old-fashioned, doesn't it?

angular typescript

Answer 1

Answer №1

Assuming that your API will return a JSON object containing your data, it is recommended to immediately cast that object into a typed object for better practice. Let's consider the example of a Photo object being retrieved from a Photo API endpoint.

{
    id: 1,
    url: "http://...",
    title: "Some title"
}

To handle this, it would be wise to create an interface for the photo object:

interface Photo {
  id: number,
  url: string,
  title: string
}

Interfaces allow you to define the structure of objects in your application. For instance, if a third-party API returns an object key like 'lstPrc', you can redefine it in your interface as 'lastPrice'!

Now that we have an interface, we can type and construct an object from the API's data:

// Assuming we're in an ajax callback context

function (data) {
  const photo: Photo {
    id: data.id,
    url: data.url,
    title: data.title
  }

   // perform operations with our new typed photo object
}

The advantages of working with a typed object may not be immediately apparent without experience in strongly typed languages. However, you'll reap numerous benefits moving forward in terms of code extension, refactoring, and improved code completion provided by your IDE or text editor.

Answer 2

Assuming that your API will return a JSON object containing your data, it is recommended to immediately cast that object into a typed object for better practice. Let's consider the example of a Photo object being retrieved from a Photo API endpoint.

{
    id: 1,
    url: "http://...",
    title: "Some title"
}

To handle this, it would be wise to create an interface for the photo object:

interface Photo {
  id: number,
  url: string,
  title: string
}

Interfaces allow you to define the structure of objects in your application. For instance, if a third-party API returns an object key like 'lstPrc', you can redefine it in your interface as 'lastPrice'!

Now that we have an interface, we can type and construct an object from the API's data:

// Assuming we're in an ajax callback context

function (data) {
  const photo: Photo {
    id: data.id,
    url: data.url,
    title: data.title
  }

   // perform operations with our new typed photo object
}

The advantages of working with a typed object may not be immediately apparent without experience in strongly typed languages. However, you'll reap numerous benefits moving forward in terms of code extension, refactoring, and improved code completion provided by your IDE or text editor.

Explore the world of data manipulation in Angular by experimenting with different

Answer №1

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