Design Studio - Display a dummy image when searched photo does not exist

Question

hello,
I would like to display an employee photo, which should be searched on the server folder with URL.
Each photo name in my folder is : "employeeId.png".
But some employees do not have a photo, and in this case I try to display a dummy photo, which I have in the same folder with employee id 00000000.
My variables are :
- URLlink variable is global variable type URL, which gives a path to my folder with employees photos
- empnb variable is filled with employee id through getSelectedMember on cross table
- filename variable to search a photo on the server
- filename0 variable for those employees for which photo does not existe
I tried to test the existence of an employee photo with getHeigh() method or getImage() method, to check if a photo filename set in Image1 is a real
one. Cause if a photo does not exist, the Design studio put by default a small black cube inside Image.
Unfortunatelly these tests are not working .
My script:
var filename =  URLlink + empnb + ".png";    // existing employee photo
var filename0 = URLlink + "00000000" + ".png";  // dummy profile photo
IMAGE_1.setImage(filename); //Try to put a photo found on the server 
var height = IMAGE_1.getHeight(); 
if (height == -1)
{ IMAGE_1.setImage(filename0);   }
else   {IMAGE_1.setImage(filename);}
Does anyone have other idea how to test if a photo exist or not in my folder.
Many thanks!
Bea

Answer 1

I do not think it is possible today (at least not via checking of the image size). Such function would require
* code extension in image component -> boolean IMAGE.exists()
or
* could be made by custom image implementation via design studio SDK. This custom image would send a request via Ajax and check response status. in case not existing some dummy images would be placed.
for both options there are no plans as of today.
the only option I see today is to generate in the folder "dummy" images for all employes who do not have any real image.