Working with JSON data in AngularJS2's templates

Is there a way for me to process JSON from the template in a manner similar to the second code I provided?


First code.

This method works well when using .json and .map ()

@Component({
..//
template: `..//
           <li *ngFor="#user of users">
           JSON: {{ user.name }}

          ..//`


  get(){

    this.http.get('lib/sampleResAPI.json')
    .map(res => res.json())
    .subscribe(users => this.users = users);
   ..//
  }

sampleResAPI.json is formatted as follows:

[
{
  "id": 362,
  "name": "test",
..//
}
]

However, even though I am able to display an alert with alert(this.users.name);, I cannot access the property from the template {{ users.name }} because it returns undefined.

-> The second code snippet was not found

@Component({
..//
template: `..//

           JSON: {{ users.name }}

          ..//`


  get(){

    this.http.get('lib/sampleResAPI.json')
    //.map(res => res.json())
    .subscribe(users => this.users = users.json());

    //this.u = JSON.parse(this.users);
    alert(this.users.name);
    ..//
    }

SampleResAPI.json does not contain square brackets:

{
  "id": 362,
  "name": "test",
..//
}

Is there a correct way to handle the JSON data like users.name in the alert from within the template?

Answer №1

Experiment with

JSON: {{ user?.name }}

in order to handle the period before user is initialized

Answer №2

I'm having trouble grasping the issue at hand. Would you be able to provide us with the contents of the users result for each scenario using the JSON pipe operator?

@Component({
  ..//
  template: `..//
    JSON: {{ users | json }}
  `
})

The value of users.name will always be undefined because name is a property of elements within the array, not the array itself...

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