Skip to main content
S
SS_112982417-Bedrock
7-Bedrock
December 15, 2024
Solved

Reset application parameters after placing order

  • December 15, 2024
  • 1 reply
  • 1125 views

I want to reset application parameters in Vuforia Studio after placing an order.The orderid is getting reused even after setting it to undefined ex: $scope.app.params['uid'] = undefined.Can you please help me with this.

@RolandRaytchev 

Best answer by RolandRaytchev

Hi @SS_11298241 ,

when you set the parameter to an value you need to check what is the value there.

I believe that app parameter could not be set later to undefined but it is an empty string- there is some automatic parsing. 

The quesiton how you did hanlde the setting a parmater value to undefined. Possibly you can use the string 'undefined' and check something like 

if($scope.app.params['uid'].indexOf('undefined') !=-1) ...  please see also https://stackoverflow.com/questions/2559318/how-to-check-for-an-undefined-or-null-variable-in-javascript

but possibly you can check an empty string  https://stackoverflow.com/questions/5515310/is-there-a-standard-function-to-check-for-null-undefined-or-blank-variables-in

or not valid uid ... (so means the stinng does not match the uid requirments) I think you need to have define your function e.g. (check_valid_uid) what should be the best option.

It depends when you say reused - what that means. where you reuse .it ?  e.g. $whatch construct or some service call.... you can even do you check if ui is valid or not.

Thanks

1 reply

R
RolandRaytchev21-Topaz IAnswer
21-Topaz I
December 16, 2024

Hi @SS_11298241 ,

when you set the parameter to an value you need to check what is the value there.

I believe that app parameter could not be set later to undefined but it is an empty string- there is some automatic parsing. 

The quesiton how you did hanlde the setting a parmater value to undefined. Possibly you can use the string 'undefined' and check something like 

if($scope.app.params['uid'].indexOf('undefined') !=-1) ...  please see also https://stackoverflow.com/questions/2559318/how-to-check-for-an-undefined-or-null-variable-in-javascript

but possibly you can check an empty string  https://stackoverflow.com/questions/5515310/is-there-a-standard-function-to-check-for-null-undefined-or-blank-variables-in

or not valid uid ... (so means the stinng does not match the uid requirments) I think you need to have define your function e.g. (check_valid_uid) what should be the best option.

It depends when you say reused - what that means. where you reuse .it ?  e.g. $whatch construct or some service call.... you can even do you check if ui is valid or not.

Thanks

S
SS_112982417-BedrockAuthor
7-Bedrock
December 16, 2024

Hi Roland,

Thanks for responding to my previous post. Apologies if my earlier explanation was too vague. Here's a detailed description of the issue I'm facing with my cart application:

Problem Description

My cart application generates a unique ID (uid) whenever items are added to the cart. However, I've encountered an issue when users place multiple orders without refreshing the page.

Steps to Reproduce

  1. First Order:

    • User selects 2 items and places the order.
    • The order is successfully placed, and the user receives an email confirmation for the 2 items.

  2. No Page Refresh:

    • The user does not refresh the browser after placing the first order.

  3. Second Order:

    • The user selects 3 new items for a second order.
    • On placing the second order, the application processes it with 5 items (2 from the previous order + 3 new ones).

Cause

The cart application reuses the uid for subsequent operations when the page is not refreshed, resulting in a merge of the previous order's items with the current one.

Limitation

I would like the addToCart functionality to use a new uid for each order without requiring the user to refresh the page or triggering a location.reload().

Question

How can I ensure that a new uid is generated and used for each order without requiring a page refresh?

I've attached my bindings for reference. Any suggestions or best practices to resolve this would be greatly appreciated.

Thanks in advance!

R
RolandRaytchev21-Topaz I
21-Topaz I
December 16, 2024

possibly we need to check more detailed the calling sequence to see why that happend 

... but when you say - when the customer will not refresh the view. - so means that issue is chrome - is that also in view on device?

- and I will undertand your statement that it will work ok when user will referesh the view /browser after the order- therefore possibly via some a little stupid technques we can force the refresh. $sope.apply() - found follow internal info but never used it- so possibly you can try if that will referesh:

 

$scope.$apply() function takes a function as parameter which is executed, and after that $scope.$digest() is called
internally. That makes it easier for you to make sure that all watches are checked, and thus all data bindings refreshed.
Here is an $apply() example:
$scope.$apply(function() {
$scope.data.myVar = "Another value";
});
The function passed to the $apply() function as parameter will change the value of $scope.data.myVar. When the
function exits AngularJS will call the $scope.$digest() function so all watches are checked for changes in the watched
values.

 

one possible way to refersh I know is to call a second view widget

let say a dummy view widget what has e.g. a text saying  something like  " am processing your order" etc. let say you view is named order_process

so you can call 

 

$scope.app.fn.navigate('order_process');

 

that will call the 2D view and there we can define in oder_process.js some think like :

 

 $scope.$on("$ionicView.afterEnter", function (event,info) {
 
//======when the view is loaded
//then wait 1 second and navigate back to Home or what ever the name
 $timeout( () =>{ //I will call with 2550 delay the srv
 let navigateObject = {'viewname': 'Home'};
 $scope.$emit('app-fn-navigate', navigateObject);}
 
},1000); 
//-----------------------------
}) //######################## finish afterEnter view

 

So means you will navigate to the process_view and then after 1 second it will navigate back to the Home or what ever you name of the original view is. You can also use for that an app parameter e.g.    $sope.app.params.CallingView e.g

 

 $sope.app.params.CallingView ="MyStartView"
 $scope.app.fn.navigate('order_process');

 

and then the defintion in order_process.js

 $scope.$on("$ionicView.afterEnter", function (event,info) {
 
//======when the view is loaded
//then wait 1 second and navigate back to Home or what ever the name
 $timeout( () =>{ //I will call with 2550 delay the srv
 let navigateObject = {'viewname': $sope.app.params.CallingView };
 $scope.$emit('app-fn-navigate', navigateObject);}
 
},1000); 
//-----------------------------
}) //######################## finish afterEnter view

Could you check if that will work in your case? Thanks

Terms & ConditionsCookie settingsAccessibility statement