With numerous lists on our page containing potentially hundreds of items, we prioritize performance by implementing one-time bindings to update only when necessary and minimize the number of watchers.
If we decide to utilize one-time bindings, is there a method to prompt Angular to refresh specific sections or even the entire page?
After conducting some research, it appears that there is no built-in method to achieve this particular task natively. However, I did come across a potential code snippet that may be helpful for others seeking a simpler solution:
https://gist.github.com/kentcdodds/739566ebd3609ac95e61
The only functionality that seemed to align with my requirements was ng-if. This directive removes the element and all associated Angular scopes when set to false, then recompiles and adds them back when set to true (including rebinding one-time bindings).
I have been exploring this approach as a potential solution and will update on its progress. Any thoughts or feedback on this strategy are welcomed.
UPDATE
I successfully implemented the solution by using ng-if with a "reset" variable to trigger recompilation and rebinding of the desired element:
<div id="dashboard-view" ng-if="reset">
... Code containing one-time bindings e.g., {{::store.name}} ...
</div>
In your controller:
angular.module('sampleApp')
.controller('SampleCtrl',['$scope', function($scope){
$scope.reset = true;
$scope.dataUpdated = function(){
$scope.store.name = "new name";
$scope.reset = false;
$timeout(function(){$scope.reset=true;},50);
};
});
Your button triggering data updates could look like this:
<input type="submit" ng-click=dataUpdated>
While the current implementation works, I am open to suggestions for improvement. The use of $timeout can potentially be optimized with further exploration, possibly through injecting $scope.$apply(). Please share any insights you may have on this matter.
This approach ensures complete recompilation and rerendering, along with rebinded one-time bindings within the #dashboard-view div if their values were altered.
If anyone has an alternate or more efficient solution in mind, feel free to contribute. Hopefully, this methodology proves beneficial to others, as it required considerable effort to devise.
UPDATE 2 Further investigation into the ng-if source code revealed a more advanced concept of transclusion in Angular. For those interested in a cleaner, non-hacky solution, delving into this aspect would be advantageous.
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