Image not updating in Angular due to issues with AJAX requests

Here is the code snippet I am currently working on:

<body lang="en-US" ng-app="socket-server" ng-controller="imageValidationController">
    <div class="image-panel">
        <h1>Images Found:</h1>
        <div class="image-list" ng-repeat="image in images">
            <p>Image size: {{image.size}}</p>
            <p>Width: {{image.width}}</p>
            <p>Height: {{image.height}}</p>
            <img class="image" ng-src="{{image.image}}">
        </div>
        <p>Total images found: {{num_images}}</p>
    </div>

In addition to the HTML above, here is the accompanying Javascript:

    var app = angular.module('socket-server', []);


    app.controller('imageValidationController', function($scope, $http) {
        $http({
            method: 'POST',
            data: 'html=<html><body><img src="https://media.giphy.com/media/lhvyCCcFuQFKo/200.gif"></body>',
            url: '/app/image-validation',
            headers: {'Content-Type': 'application/x-www-form-urlencoded'}
        })
        .then(function(response) {
            $scope.images = response.data.images;
            $scope.num_images = response.data.num_images;
        })

    })

The endpoint /app/image-validation returns a JSON object structured as follows:

{
    images: [ 
        {
            image: 'http://someurl.com/image.jpg',
            size: 471812,
            width: 640,
            height: 480
        }
    ]
}

Despite checking and confirming that everything is functioning correctly, I am encountering an issue. The image tag is being generated with the correct source, but the actual image does not load. I'm uncertain where my mistake lies in this scenario.

Answer №1

One issue arises with the response data - it needs to be formatted as follows:

Prior:

{
    images: [ 
        {
            image: 'http://someurl.com/image.jpg',
            size: 471812
            width: 640
            height: 480
        }
    ]
}

After:

{
    images: [ 
        {
            image: 'http://someurl.com/image.jpg',
            size: 471812,
            width: 640,
            height: 480
        }
    ]
}

A working example showcasing the correct response data can be found in this fiddle!

JSFiddle Demo

Answer №2

One possible solution might involve including a decache query string in the image URL, like so:

.then(function(response) {
        $scope.images = response.data.images;
        $scope.num_images = response.data.num_images;

      angular.forEach( $scope.images.image ,  function(url, key) {         
       $scope.images[key].image= url+ '?decache=' + Math.random();
    })

Answer №3

Essentially, the url provided in the post data, , is not actually a gif file. Instead, it directs to an html page containing the desired gif, causing loading issues.

By substituting another image url in the post data, the process functions smoothly:

app.controller('imageValidationController', function($scope, $http) {
    $http({
        method: 'POST',
        //now works correctly
        data: 'html=<html><body><img src="https://media3.giphy.com/avatars/nikdudukovic/ylDRTR05sy6M.gif"> </body>', 
        url: '/app/image-validation',
        headers: {'Content-Type': 'application/x-www-form-urlencoded'}
    })
    .then(function(response) {
        $scope.images = response.data.images;
        $scope.num_images = response.data.num_images;
    })

})

The returned data structure is as follows:

{
    "images":[
        {
             "image": "https://media3.giphy.com/avatars/nikdudukovic/ylDRTR05sy6M.gif",
             "size": 337783,
             "width": 250,
             "height": 250,

        }
    ],
    "num_images": 1
}

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