Iterate array inside object Angular 6
I'm getting an object via API with this method:
this.someService.getStuffFromAPI(this.idUser, 'Area')
.pipe(first())
.subscribe(
data =>
this.stuffOnView = data;
,
error =>
console.log(error);
);
This returns an Object that have an Array, like this:
In my html I have managed to get the Array length using this:
<div class="task-group" *ngFor="let key of objectKeys(stuffOnView)">
<span class="column-title">
key.length Items to display
</span>
But I can't get the properties inside the array, like idRec
and so on.
How can I iterate to get the array's properties?
Thanks for your help.
arrays angular javascript-objects
add a comment |
I'm getting an object via API with this method:
this.someService.getStuffFromAPI(this.idUser, 'Area')
.pipe(first())
.subscribe(
data =>
this.stuffOnView = data;
,
error =>
console.log(error);
);
This returns an Object that have an Array, like this:
In my html I have managed to get the Array length using this:
<div class="task-group" *ngFor="let key of objectKeys(stuffOnView)">
<span class="column-title">
key.length Items to display
</span>
But I can't get the properties inside the array, like idRec
and so on.
How can I iterate to get the array's properties?
Thanks for your help.
arrays angular javascript-objects
add a comment |
I'm getting an object via API with this method:
this.someService.getStuffFromAPI(this.idUser, 'Area')
.pipe(first())
.subscribe(
data =>
this.stuffOnView = data;
,
error =>
console.log(error);
);
This returns an Object that have an Array, like this:
In my html I have managed to get the Array length using this:
<div class="task-group" *ngFor="let key of objectKeys(stuffOnView)">
<span class="column-title">
key.length Items to display
</span>
But I can't get the properties inside the array, like idRec
and so on.
How can I iterate to get the array's properties?
Thanks for your help.
arrays angular javascript-objects
I'm getting an object via API with this method:
this.someService.getStuffFromAPI(this.idUser, 'Area')
.pipe(first())
.subscribe(
data =>
this.stuffOnView = data;
,
error =>
console.log(error);
);
This returns an Object that have an Array, like this:
In my html I have managed to get the Array length using this:
<div class="task-group" *ngFor="let key of objectKeys(stuffOnView)">
<span class="column-title">
key.length Items to display
</span>
But I can't get the properties inside the array, like idRec
and so on.
How can I iterate to get the array's properties?
Thanks for your help.
arrays angular javascript-objects
arrays angular javascript-objects
asked Nov 16 '18 at 0:45
roymckrankroymckrank
150215
150215
add a comment |
add a comment |
2 Answers
2
active
oldest
votes
One easy way to do it is to define an interface that describes the layout of your array elements. For example, my array of products has an interface like this:
export interface Product
id: number;
productName: string;
productCode: string;
category: string;
tags?: string;
releaseDate: string;
price: number;
description: string;
starRating: number;
imageUrl: string;
Angular's http get method will then automatically map the incoming API array into an array of these objects:
getProducts(): Observable<Product>
return this.http.get<Product>(this.productsUrl);
Notice the generic parameter: <Product>
. This is telling the http get method to return the object as an array of Product objects matching the above defined interface.
I can then use something like this:
this.products[0].productName
Or I can iterate it in my UI like this:
<tr *ngFor="let product of products">
<td>
<a> product.productName </a>
</td>
<td> product.productCode </td>
<td> product.releaseDate </td>
<td> product.price </td>
</tr>
Hope this helps.
add a comment |
I suggest you define an interface, as @DeborahK has shown. Alternatively you can use Angular's keyvalue pipe. The output array will be ordered by keys, however, so if your project is order-sensitive you should not be using this. I strongly recommend against this because it relies too heavily on data structure and can break easily if your response data structure changes.
<div class="task-group" *ngFor="let object of result | keyvalue">
<span class="column-title">
object?.value?.length Items to display
</span>
<ng-container *ngIf="object?.value?.length">
<div class="task-item" *ngFor="let item of object.value">
item.idRec
</div>
</ng-container>
</div>
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
One easy way to do it is to define an interface that describes the layout of your array elements. For example, my array of products has an interface like this:
export interface Product
id: number;
productName: string;
productCode: string;
category: string;
tags?: string;
releaseDate: string;
price: number;
description: string;
starRating: number;
imageUrl: string;
Angular's http get method will then automatically map the incoming API array into an array of these objects:
getProducts(): Observable<Product>
return this.http.get<Product>(this.productsUrl);
Notice the generic parameter: <Product>
. This is telling the http get method to return the object as an array of Product objects matching the above defined interface.
I can then use something like this:
this.products[0].productName
Or I can iterate it in my UI like this:
<tr *ngFor="let product of products">
<td>
<a> product.productName </a>
</td>
<td> product.productCode </td>
<td> product.releaseDate </td>
<td> product.price </td>
</tr>
Hope this helps.
add a comment |
One easy way to do it is to define an interface that describes the layout of your array elements. For example, my array of products has an interface like this:
export interface Product
id: number;
productName: string;
productCode: string;
category: string;
tags?: string;
releaseDate: string;
price: number;
description: string;
starRating: number;
imageUrl: string;
Angular's http get method will then automatically map the incoming API array into an array of these objects:
getProducts(): Observable<Product>
return this.http.get<Product>(this.productsUrl);
Notice the generic parameter: <Product>
. This is telling the http get method to return the object as an array of Product objects matching the above defined interface.
I can then use something like this:
this.products[0].productName
Or I can iterate it in my UI like this:
<tr *ngFor="let product of products">
<td>
<a> product.productName </a>
</td>
<td> product.productCode </td>
<td> product.releaseDate </td>
<td> product.price </td>
</tr>
Hope this helps.
add a comment |
One easy way to do it is to define an interface that describes the layout of your array elements. For example, my array of products has an interface like this:
export interface Product
id: number;
productName: string;
productCode: string;
category: string;
tags?: string;
releaseDate: string;
price: number;
description: string;
starRating: number;
imageUrl: string;
Angular's http get method will then automatically map the incoming API array into an array of these objects:
getProducts(): Observable<Product>
return this.http.get<Product>(this.productsUrl);
Notice the generic parameter: <Product>
. This is telling the http get method to return the object as an array of Product objects matching the above defined interface.
I can then use something like this:
this.products[0].productName
Or I can iterate it in my UI like this:
<tr *ngFor="let product of products">
<td>
<a> product.productName </a>
</td>
<td> product.productCode </td>
<td> product.releaseDate </td>
<td> product.price </td>
</tr>
Hope this helps.
One easy way to do it is to define an interface that describes the layout of your array elements. For example, my array of products has an interface like this:
export interface Product
id: number;
productName: string;
productCode: string;
category: string;
tags?: string;
releaseDate: string;
price: number;
description: string;
starRating: number;
imageUrl: string;
Angular's http get method will then automatically map the incoming API array into an array of these objects:
getProducts(): Observable<Product>
return this.http.get<Product>(this.productsUrl);
Notice the generic parameter: <Product>
. This is telling the http get method to return the object as an array of Product objects matching the above defined interface.
I can then use something like this:
this.products[0].productName
Or I can iterate it in my UI like this:
<tr *ngFor="let product of products">
<td>
<a> product.productName </a>
</td>
<td> product.productCode </td>
<td> product.releaseDate </td>
<td> product.price </td>
</tr>
Hope this helps.
answered Nov 16 '18 at 1:30
DeborahKDeborahK
28.9k54171
28.9k54171
add a comment |
add a comment |
I suggest you define an interface, as @DeborahK has shown. Alternatively you can use Angular's keyvalue pipe. The output array will be ordered by keys, however, so if your project is order-sensitive you should not be using this. I strongly recommend against this because it relies too heavily on data structure and can break easily if your response data structure changes.
<div class="task-group" *ngFor="let object of result | keyvalue">
<span class="column-title">
object?.value?.length Items to display
</span>
<ng-container *ngIf="object?.value?.length">
<div class="task-item" *ngFor="let item of object.value">
item.idRec
</div>
</ng-container>
</div>
add a comment |
I suggest you define an interface, as @DeborahK has shown. Alternatively you can use Angular's keyvalue pipe. The output array will be ordered by keys, however, so if your project is order-sensitive you should not be using this. I strongly recommend against this because it relies too heavily on data structure and can break easily if your response data structure changes.
<div class="task-group" *ngFor="let object of result | keyvalue">
<span class="column-title">
object?.value?.length Items to display
</span>
<ng-container *ngIf="object?.value?.length">
<div class="task-item" *ngFor="let item of object.value">
item.idRec
</div>
</ng-container>
</div>
add a comment |
I suggest you define an interface, as @DeborahK has shown. Alternatively you can use Angular's keyvalue pipe. The output array will be ordered by keys, however, so if your project is order-sensitive you should not be using this. I strongly recommend against this because it relies too heavily on data structure and can break easily if your response data structure changes.
<div class="task-group" *ngFor="let object of result | keyvalue">
<span class="column-title">
object?.value?.length Items to display
</span>
<ng-container *ngIf="object?.value?.length">
<div class="task-item" *ngFor="let item of object.value">
item.idRec
</div>
</ng-container>
</div>
I suggest you define an interface, as @DeborahK has shown. Alternatively you can use Angular's keyvalue pipe. The output array will be ordered by keys, however, so if your project is order-sensitive you should not be using this. I strongly recommend against this because it relies too heavily on data structure and can break easily if your response data structure changes.
<div class="task-group" *ngFor="let object of result | keyvalue">
<span class="column-title">
object?.value?.length Items to display
</span>
<ng-container *ngIf="object?.value?.length">
<div class="task-item" *ngFor="let item of object.value">
item.idRec
</div>
</ng-container>
</div>
answered Nov 16 '18 at 3:18
JasmonateJasmonate
32849
32849
add a comment |
add a comment |
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