Clever Geek Handbook

Nested loops in angular 2

I want to display the data of this array: 

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

I want to show it this way in a table:

composer nom

composant11 nom1

composant12 nom1

composant21 nom2

composant22 nom2

This is my code:

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

My browser doesn't show anything. I wonder if there really is a way to do this in a template. Or if I must first convert the array to a component before displaying it. Any suggestion would be appreciated!

+3


source to share


3 answers


Try the following:



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>
+9


source


I am using slightly different syntax which did the job

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>
+1


source


Modify the code as shown 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>
0


source






More articles:


All Articles