About the operation of data-hide

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1

Hi,

I have a question about how data-hide works. It is difficult to explain in text, so I will use pictures to explain it.

form:
  - queue
  - gpus
  - opengl
attributes:
  queue:
    widget: select
    options:
      - [ "normal node", "normal", data-hide-gpus: true, data-hide-opengl: true ]
      - [ "gpu node", "gpu" ]
  gpus:
    widget: select
    value: "0"
    options:
      - [ "0", "0", data-hide-opengl: true ]
      - [ "1", "1" ]
      - [ "2", "2" ]
  opengl:
    widget: check_box

The screen visited for the web form generated by the above form.yml is shown below.

p1
p11046×230 8.18 KB

Next, select “gpu node” from Queue and you will be taken to the below screen.

p2
p21056×452 15.2 KB

Here, you can see the OpenGL checkbox.
Is it possible to hide this checkbox using the above flow ?
Of cause, when you select “1” from Gpus and then select “0” again, the OpenGL checkbox will disappear. But I want it to be invisible from the beginning.

Best,

2

So when I copied this I had the behavior that you’d expect. This makes me think that you’ve launched this application in the past with gpus set to 1 or more and this value is being cached.

So what you’re seeing when the page loads is the fact that gpus is not the defualt 0 that you’ve provided, but instead the cached value of 1 or 2.

You can disable caching by setting cacheable attribute to false. This way the starting value of gpus will always be 0 as you’ve set it there. (hacking around I had to set it on both queue and gpus, so you may have to play around a bit with it).

  gpus:
    widget: select
    value: "0"
    options:
      - [ "0", "0", data-hide-opengl: true ]
      - [ "1", "1" ]
      - [ "2", "2" ]
   cacheable: false

By the way - you probably also want a data-set-gpus=0 attached to the normal node option. Unfortunately, we don’t have a lot of support for checkboxes at this time so there’s no way to reset that value.