use Angular to hide a div if an image src resolves with 404 Error

Question

I have this piece of code. It get's the logo of a game from steam

<div class="col-md-3">
        <img src="http://cdn.edgecast.steamstatic.com/steam/apps/{{game.steamID}}/header.jpg" style="width: 100%; height: auto;"/>
    </div>

this is part of a thumbnail div which is tied to a ngFor loop.

now for some context, and my question.

My app uses the steam WebAPI to get a list of all the games a user owns, and stores it in a database.

it then displays the list of these games to the user, with the game logo.

there are some "games" that aren't actually games, dedicated servers mostly. but these non-games don't have any images attached to them. I want to remove these entries from the webpage whenever they crop up. The best way I can think of is to catch any 404 errors and tell the thumbnail to hide itself.

so my question is, is it possible to use ngIf to hide a div if the image url comes back with a 404 error?

EDIT

I'm adding the entire thumbnail's code for anyone that might want to look a the bigger picture.

<div class="thumbnail" style="color: black" *ngFor="let game of games">
<div class="row">
    <div class="col-md-3">
        <img src="http://cdn.edgecast.steamstatic.com/steam/apps/{{game.steamID}}/header.jpg" style="width: 100%; height: auto;"/>
    </div>
    <div class="col-md-9">
        <div class="row">
            <div class="col-md-12">
                <h2>{{game.name}}</h2>
            </div>
        </div>
        <div class="row">
            <div class="col-md-12">
                <!--<p>{{countRequests(game.id)}} People want to play<span class="pull-right">Sinse: GET_LAST_REQUEST_DATE</span></p>-->
            </div>
        </div>
    </div>
</div>
</div>
<div class="row">
<div class="col-md-12">
    <div class="centerBlock">
        <div class="btn-group btn-group-lg btn-block">
                        <button *ngIf="page > 1" class="btn btn-primary btn-outline" (click)="previousPage()">Previous</button>
            <button *ngFor="let page of pages" class="btn btn-primary btn-outline"(click)="gotoPage(page)">{{page}}</button>
            <button *ngIf="page < maxPages" class="btn btn-primary btn-outline" (click)="nextPage()">Next</button>
        </div>
    </div>
</div>
</div>

is the div .thumbnail you want to hide if the url returns 404? — Josue Martinez
– Josue Martinez, Commented Jul 21, 2017 at 0:22
yeh, I want to hide .thumbnail div when the url returns 404 — Jamie McAllister
– Jamie McAllister, Commented Jul 21, 2017 at 0:26

Ploppy · Accepted Answer · 2017-07-21 01:35:30Z

14

Using Angular events you can hide the image itself:

<img #image src="..." (error)="image.hidden = true" [hidden]="image.hidden">

Or any other element:

<div [hidden]="image.hidden"></div>

Or completely remove any div:

<div *ngIf="!image.hidden"></div>

edited Jul 21, 2017 at 1:35

answered Jul 21, 2017 at 1:01

Ploppy

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3 Comments

Jamie McAllister Over a year ago

will this work on the same line as the ngFor?...... so my code would look something like: <div class="thumbnail" style="color: black" *ngFor="let game of games" *ngIf="!game.image.hidden">

Jamie McAllister Over a year ago

I had to reshuffle my styles a little, but this worked. thanks :)

Pranay Mishra Over a year ago

Best solution to resolve broken image link issue

Pranay Mishra · Accepted Answer · 2022-09-23 18:54:27Z

0

When using *ngFor Listen to the (error) event of the image element & if the image is broken you can hide the image itself:

   <div *ngFor="let some of somethings">
       <div *ngIf="some.imageUrl" class="image-class-1 img-class-2">
         <img src="{{some.imageUrl}}" (error)="some.imageUrl = null"/>
       </div>
    </div>

edited Sep 23, 2022 at 18:54

answered Sep 23, 2022 at 18:42

Pranay Mishra

1127 bronze badges

Comments

Josue Martinez · Accepted Answer · 2017-07-21 00:56:09Z

This is what I would do based on what you have said:

1 - I would take the full image url as a property of game.

2 - Also add a property hide to the object.

3 - Consult image using $http service in the controller.

4 - When consulting image the response is 404 then the value of property hide should be true.

5 - As you now have a property hide you can just go ng-hide="game.hide"

Here is an example:

function MyCtrl($scope,$http) {
    $scope.games = [{name: 'Game 1', url: 'https://res.cloudinary.com/idemo/image/upload/ar_315:250,c_fill,e_saturation:50,g_faces,r_50,w_450/balloons.jpg'},
                {name: 'Game 2', url: 'https://res.cloudinary.com/idemo/image/upload/ar_315:250,c_fill,e_saturation:50,g_faces,r_50,w_450/balloons.jpg'},
                {name: 'Game 3', url: ''}]
      angular.forEach($scope.games, function(value, key) {
      $http.get('value.url').then(function(response){
        if(response.status === 404){
            value.hide = true
      }
      });
    });
}

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