**Steps to reproduce**
- Open general settings of pos.
- Select/Create a Point of Sale that is kiosk to see the `Splash screens` field.
- The field is pre-filled with 3 images.
- ISSUE: Try removing the images and save, they won't be removed.
**FIX**
- This is because of the `write` operation made from the `res.config.settings`
model to the `pos.config`.
- When removing an image, the field will be given `link` commands, linking the
remaining images. This is wrong because it won't unlink the images that are
deleted.
- To ensure the deletion, we reinterpret the command to the splash screen images
field if the command comes from the res.config.settings.
- We introduce a context called 'from_settings_view' such that it's set to
true when the write is from the `res.config.settings` view.
- And specific to the pos_self_order, we compute the items that should be
unlinked and we append the unlink commands to the original set of commands
for the splash screen field.
closesodoo/odoo#137819
Signed-off-by: Robin Heinz (rhe) <rhe@odoo.com>
Joseph Caburnay
d6c42bba00