File Download Progress Bar Angular 6
Tamar Rochon
$scope.$$phase will return "$digest" or "$apply" if a $digest or $apply is in progress. I believe the difference between these states is that $digest will process the watches of the current scope and its children, and $apply will process the watchers of all scopes.
To @dnc253's point, if you find yourself calling $digest or $apply frequently, you may be doing it wrong. I generally find I need to digest when I need to update the scope's state as a result of a DOM event firing outside the reach of Angular. For example, when a twitter bootstrap modal becomes hidden. Sometimes the DOM event fires when a $digest is in progress, sometimes not. That's why I use this check.
We tried several workarounds, and we hated injecting $rootScope into all of our controllers, directives, and even some factories. So, the $timeout and _.defer have been our favorite so far. These methods successfully tell angular to wait until the next animation loop, which will guarantee that the current scope.$apply is over.
When you get that error, you're trying to digest your scope while it's already in progress: since you don't know the state of your scope at that point, you're not in charge of dealing with its digestion.
That is still not as good as a $scope.$digest if you really know that you only need to synchronize an isolated part of your HTML (since a new $apply will be triggered if none is in progress), but this is the best solution when you are executing a function which you cannot know it if will be executed synchronously or not, for instance after fetching a resource potentially cached: sometimes this will require an async call to a server, otherwise the resource will be locally fetched synchronously.
The problem arises when you have a call to $apply that is sometimes run asynchronously outside of Angular code (when $apply should be used) and sometimes synchronously inside Angular code (which causes the $digest already in progress error).
In my case, an ng-click changes a variable within a scope, and a $watch on that variable changes other variables which have to be $applied. This last step causes the error "digest already in progress".
The issue is basically coming when, we are requesting to angular to run the digest cycle even though its in process which is creating issue to angular to understanding. consequence exception in console.
1. It does not have any sense to call scope.$apply() inside the $timeout function because internally it does the same.
2. The code goes with vanilla JavaScript function because its native not angular angular defined i.e. setTimeout
3. To do that you can make use of
if(!scope.$$phase)
scope.$evalAsync(function()
);
The progress status displays a ratio between the current and maximum values and indicates the progress. Use the showStatus property to display or hide the status string. To format the status string, use the statusFormat function.
Hi,
Right now Bryntum gantt automatically calculates the progress of histogram based on line item start and end date.I am getting progress data from backend(server), gantt histogram should consider that progress, it shouldn't automatically calculate. Is there any way we can achieve this functionality? Please find the attached image, as you can see blue progress line that i want to bind with backed data.
Hello,
The control -angular-ui/components/utils/draganddrop/drag-container/ cannot be used on mobile devices. I am not able to move the element in its position. I also tested it directly on a mobile device and it doesn't work there either.
We don't have any example since it's a specific use case you need, not common requirement. But as @ismcagdas mentioned, you may connect to the server via signalr and send the current progress of the excel file to the client from server. And show a progress bar in client's ui. It is one of the possible solutions.
Hi All, I am using angular material v16.I want to create a custom progress bar that indicates percentage of progress depending upon the http response received from the springboot backend..So basically it's an excel file upload and want to show percentage of progress for the file upload until it's completed.plarse share any working stackblitz
In order to calculate the upload progress we need to pass the reportProgress and observe options for our HTTP request while setting them to true and event respectively. This way, the HttpClient returns and RxJS observable containing an HttpEvent for each step in the upload request. By setting reportProgress to true this will also include events of type HttpProgressEvent which provide information about the number of uploaded bytes as well as the total number of bytes in the file.
It has a progress property ranging from 0 to 100 and state property that tells us whether the underlying request is pending, currently in progress or done. Our initial state will start out accordingly:
We can use the Observable returned from the service in our component to display a progress bar. Simply assign the upload states to an instance property from inside the subscription callback (or use the AsyncPipe with NgIf):
The ProgressEvent interface represents events measuring progress of an underlying process, like an HTTP request (for an XMLHttpRequest, or the loading of the underlying resource of an , , , or ).
A 64-bit unsigned integer representing the total amount of work that the underlying process is in the progress of performing. When downloading a resource using HTTP, this is the Content-Length (the size of the body of the message), and doesn't include the headers and other overhead.
Following this guideline sample-blob.html I want to track upload progress by getting the progress value to the DOM. I also want to print, say, 'done' in the DOM when the upload is finished. Is there a way to "subscribe" to SpeedSummary so I can get its progress value? Any other more recommended approach?
Note: I am aware of this implementation upload-to-azure-blob-storage-with-angular-7977e979496a but it gives me an error when implementing the uploadFile function. But more importantly I am looking for something more straigthforward to implement.
We have been working on 3 separate projects that together will give us the ability to make 1 arc second, light weightWolter I optics that work above 40 keV. The three separate tasks are: (a) plasma spraying of metal-coated micro-balloons; (b) coating of the inside of Wolter I mirrors, (c) actuator designs for improving figure quality.We give a progress report on our work on all three areas.
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