Loop over response objects based on condition angular 5

Question

I have a rest response which i want to loop over but based on condition, here's my response:

{
    "veichleType": "SUV",
    "veichleBrand": "BMW",
    "veichleModels": [{
            "veichleModel": "M3",
            "property1": "value",
            "property2": "value",
            "property3": "value"
        },
        {
            "veichleModel": "M1",
            "property": "value",
            "property2": "value",
            "property3": "value"
        }
    ]
}

I want in the UI to show only one object based on veichleModel if user searched by M3 then display that object response in the table, else show M1.

<table>
<thead>
headings here
</thead>
<tbody *ngIf='serviceResponse.veichleModels'>
<tr *ngFor="let veichleModel of serviceResponse.veichleModels">
<td>{{veichleModels.property1}}</td>
<td>{{veichleModels.property2}}</td>
<td>{{veichleModels.property3}}</td>        
</tbody>
</table>

Answer 1

You need to do two things here :

1. Add some variable to store the selected model M1 or M3
2. Add condition inside loop to display respective object properties (Make use of ng-container)

Doing so, you can scale your array to 100 or more objects

template

<tbody *ngIf='serviceResponse.veichleModels'>
        <tr *ngFor="let veichle of serviceResponse.veichleModels">
            <ng-container *ngIf="veichle.veichleModel == selected">
                <td>{{veichle.property1}}</td>
                <td>{{veichle.property2}}</td>
                <td>{{veichle.property3}}</td>
            </ng-container>
        </tr>
</tbody>

ts file

export class AppComponent  {
  selected = 'M1';
  serviceResponse = {"veichleModels": [{
            "veichleModel": "M3",
            "property1": "M3val1",
            "property2": "M3val2",
            "property3": "M3val3"
        },
        {
            "veichleModel": "M1",
            "property1": "M1val1",
            "property2": "M1val2",
            "property3": "M1val3"
        }
    ]}
}