Forum | Appery.io

I have this code in a button click event:

precode
for (var i=0;i<table&#46;length;i++){
localStorage&#46;setItem('syncContactObj', table);
READ_myService&#46;execute({});
}
/code/pre
In the request part of the myService, I have a javascript that uses localStorage.getItem('syncContactObj') to construct a filter.

But while the myService is executing with the first iteration of the for-loop, I suspect that the for-loop already continues and sets the next localStorage Item and initiates the next myService execute. But I use the localStorage Item in the myService success event, so when the 1st service is still executing, the localStorage item is already replaced with a new value of the 2nd for-loop iteration.
Which makes the code in the success event of the myService erronous, because it uses the localStorage item.

How can I make sure that the 1st service call is completed before the for loop continues with the next iteration?

Hi,

You would need this: http://api.jquery.com/category/deferr...

Can you elaborate a bit more please, I have no clue on how to use it with the service.execute method, or do I have to use it in a success event, ... ?

You can find there all you need. You would need to develop your app yourself.
The code needs to be changed a bit. Then you should paste it in your code with the cycle.

You can surf "jquery deferred explained" in Google, read the descriptions and follow the tutorials. This is outside the scope of our support.

precode
for (var i=0;i<table&#46;length;i++){
localStorage&#46;setItem('syncContactObj', table&#46;contact_obj);

     $.when(myService.execute({})).done( 
       function (){  

       } 
     ); 

}
/code/pre

This gives the same result. But if I put an alert in the function, then it works (because of the delay caused by the alert).

Is the service.execute a deferred object?

It seems to be that the only way to resolve this, is to pass the table.contact_obj to the myservice callback function instead of using localstorage.

How can I override the default success callback function when i call execute in Appery, so that it has 2 input parameters instead of only the 'data' now?

There is no way to do this.

You would need to save the array in localStorage.
Then create a counter variable.
On each Success event increase the counter variable value (+1).
Then call the service again with the new value from the array (by counter index).