Fetching data from a database based on the current element during ng-repetition

Currently, I am in the process of developing a spring web application where I have implemented a div table. My goal is to showcase data from an array within angularjs's $scope using ng-repeat. Here is an example:

<div ng-repeat="element in elements>
{{element.id}}
</div>

My next objective is to retrieve additional information about the current element stored in a separate database table. This is how it could look like:


...
{{getImage(element.id)}}
...

To fetch data from the database, I have adopted the rest approach by sending HTTP get requests and storing the retrieved data in the $scope.

The code snippet below, however, doesn't produce the desired outcome:

$scope.getImage = function(id){

            $http.get("services/rest/getImage/" + id).then(function(response){
                return response.data;
            },
            function(response){

            });

        }

This results in an endless loop of HTTP requests being sent, likely due to the asynchronous nature of JavaScript requests as I attempt to simultaneously retrieve an element from the database and assign it elsewhere.

How can this issue be effectively resolved?

Answer №1

To display images within an ng-repeat loop, you'll need to create a custom directive that handles setting the image source for each img tag. Assuming that your HTTP call returns image URLs or base64 data and the ID is accessible in the scope during ng-repeat, the code snippet below uses scope.id to retrieve the id:

angular.module('app').directive('imageSetter',[function() {
    return {
        restrict: "A",
        link: function(scope, element, attrs) {
           $http.get("services/rest/getImage/" + scope.id).then(function(response){
                attrs.$set('src', response.data);
            },
            function(response){
            });
        }
    };
}]);

Usage: <img src="" image-setter>

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