Nested loops in angular 2

Question

I want to display the data of this array:

array = [
{nom: nom1, composants: [composant11, composant12]}, 
{nom: nom2, composants: [composant21, composant22]         


        

Answer 1

Try this:

rows = [
    {nom: "nom1", composants: ["composant11", "composant12"]}, 
    {nom: "nom2", composants: ["composant21", "composant22"]}
];

<table>
    <ng-container *ngFor="let row of rows">
        <tr *ngFor="let composant of row.composants">
            <td> {{ composant }} </td>
            <td> {{ row.nom }} </td>
        </tr>  
    <ng-container>  
</table>

Answer 2

I use a bit of a different syntax that got the job done

http://plnkr.co/edit/Z94BxYiu2UTU7h3oySui?p=preview

<table>
<tr>
<th>Composant</th>
<th>Nom</th>
</tr>
<template ngFor #item [ngForOf]="array">
  <template ngFor #noo [ngForOf]="item.composants">
    <tr>
      <td>{{noo}}</td>
      <td>{{item.nom}}</td>
    </tr>
    </template>
</template>
</table>

Answer 3

Change code like below:

    <table>
<tr><th>Composant</th> 
<th>Nom</th>
</tr>
<template *ngFor="let item of array">
<template *ngFor="let composant of item.composants">
 <tr> <td>{{item.nom}}</td> <td>{{composant|json}}</td> 
</tr>
</template> 
</template> 
</table>