Disabling amount can result in integer validation errors

[stewartadam]

Version

Please provide your current version (can be found on the system page since v0.8.4)
Version: 0.10.1

Bug description

A clear and concise description of what the bug is.

When adding/editing a recipe, selecting "Disable Amount" sometimes results in a validation error upon saving the recipe:

I believe this happens if the quantity/unit fields were focused before selecting disable amount. Filling the quantity field with any integer value then disabling amount again for that ingredient works.

[vabene1111]

I have tried to reproduce this issue but i can only do so by purposely typing some letters into the amount field (which i guess makes the error valid). Can you try to investigate this further and see which normal behavior is causing this issue ?

One option would be to just always set the amount to 0 whenever the amount is disabled. I didn't want to to this because if you have a amount entered and then disable it (possibly by accident) you loose the data stored there before.

[stewartadam]

I double checked and it happens if I clear the field before disabling amount. Easy fix would be to coerce '' or None to 0.

[vabene1111]

ah ok, thank you, that can definitely cause it. Will see how to fix it.