获取ng-repeat内的图像尺寸并将其放入ng-repeat项目| AngularJS

Question

I'm rendering some scope of objects via ng-repeat.

HTML

<tr ng-repeat="product in products">
    <td><img ng-src="{{product.img_thumb}}" ng-model="product.imgSize" img-dimensions-bind-directive></td>
</tr>

How I can get image clientWidth and clientHeight and put it in object product.imgSize inside ng-repeat?

What img-dimensions-bind-directuve should be?

Currently I have:

app.directive('imgDimensionsBindDirective', function() {
    return {
        restrict: 'A',
        require: 'ngModel',
        link: function(scope, element, attrs, ngModel) {
            element.bind('load', function() {
                ngModel.$setViewValue(element[0].clientWidth);
                // but how bind height ??
                // element[0].clientHeight
            });
        }
    }
});

On output each product must have imgSize.width and imgSize.height params.

Or maybe it is possible to do with onload function?

Please help.

Answer 1

What about binding to product object directly without any additional ngModel. Like this:

app.directive('imgDimensionsBindDirective', function() {
    return {
        restrict: 'A',
        scope: {
            product: '=imgDimensionsBindDirective'
        },
        link: function(scope, element, attrs) {
            element.bind('load', function() {
                scope.product.imgSize = {
                    width: element[0].clientWidth,
                    height: element[0].clientHeight
                };
                scope.$apply();
            });
        }
    }
});

and HTML then:

<tr ng-repeat="product in products">
    <td><img ng-src="{{product.img_thumb}}" img-dimensions-bind-directive="product"></td>
</tr>

Demo : http://plnkr.co/edit/8xGZ8LrKL6NB22ZX8Mpz?p=preview

Answer 2

You can encode the dimensions as a json string.

app.directive('imgDimensionsBindDirective', function() {
    return {
        restrict: 'A',
        require: 'ngModel',
        link: function(scope, element, attrs, ngModel) {
            element.bind('load', function() {
                ngModel.$setViewValue(angular.toJson({width: element[0].clientWidth,height:  element[0].clientHeight}));
            });
        }
    }
});