Delete Image File on Update page

I have asked this question before, but in a totally different context. And I can't seem to figure out how to do it on an update page.

What I have are 4 possible images for a record. The user might include 1, 2, 3 or 4 images and later update them. That's all fine.

But they want to be able to delete an image and not just update it. So for example a record has 3 image. They want to delete #3 leaving it blank.

What I would like to do is include a checkbox next to each image thumbnail on the Update page. If checked, that image will be deleted and the record table updated when they submit the Update. How would I bind the "File Manipulation" behavior to be triggered by the checkbox if checked?

Thanks,
TroyD

If you specify the checkbox from the form as the trigger, it will only fire when it is checked.

Thanks Ray. But when I did that, it broke the delete file behavior.

When I set the trigger to be the checkbox, the behavior disappears from the behavior list. The checkbox in this case is named "cb_deleteimage2"

Here's the code generated by the UI4 file manipulation wizard.

<?php

$WA_DeleteFileResult1 = false;

if((<?php echo((isset($_POST["cb_deleteimage2"]))?$_POST["cb_deleteimage2"]:"") ?>

!= "")){

    $WA_DeleteFileResult1 = WA_FileAssist_DeleteFile("../../../images/collection/", "".$row_rsCollection['imagethumb2']  ."");

}

?>

It looks like a syntax error maybe? But I'm still learning this so I don't see it.

TroyD

looks like that could be a bug in that server behavior... it should have been:

<?php
$WA_DeleteFileResult1 = false;
if(("".  ((isset($_POST["cb_deleteimage2"]))?$_POST["cb_deleteimage2"]:"").  ""
!= "")){
    $WA_DeleteFileResult1 = WA_FileAssist_DeleteFile("../../../images/collection/", "".$row_rsCollection['imagethumb2']  ."");
}
?>

Ok, that removed the error but it doesn't delete the file when I check the box.

What should the value of the check box be? Maybe that's where I went wrong.

One other thing, the delete file behavior does not show up in the behaviors list using that code. Is that an issue?

Thanks,
TroyD

The checkbox value can be anything as long as it isn't blank.

Thanks Ray.
Then that's not the problem. Any other thoughts?

TroyD

It is too hard to say without debugging. I'll open a support ticket so that we can research this with you directly.

Originally Said By: Ray Borduin

  It is too hard to say without debugging. I'll open a support ticket so that we can research this with you directly.  

I'm watching this thread with interest. Could the resolution of this problem be posted back please?

Many thanks.

Just to update. This was totally user error (me) after the point where Ray showed me the correct code. I was being stupid and didn't include a second delete behavior for the thumbnail version. So it was deleting the large image and yet I was seeing the thumbnail and thought it wasn't working. Sorry about that.

On the other issue. The delete file behavior still does not show up in the DW list of Server Behaviors. Is this normal since it is using a check box as a trigger? So I can't reenter the UE4 wizard.

(Ray, I updated the ticket with a copy of the page)

Thanks,
TroyD