Display the value from the previous record in the form

How to
#1

Hello,
I have a Devices table and an attached Consumptions table with Date and Status fields. How to get the Consumption form to display the past status of this device when entering a new status.
Thanks Jan

#2

You can simply load it on form init/change.

You have Device, you click “add consumption”, Device is prefilled, in scripts load the latest value for consumption and set that value to some field/display in free HTML field,… Depends what you need then.

#3

Pavel thanks for response.
I am a beginner in JavaScript and I don’t know how to write this code. The attached image illustrates what I need to display in the form. Can you please provide an example of the script.
Jan

DeviceStatus
DeviceStatus698×317 15.4 KB

#4

Something like

doo.model.date.value = doo.model.doo.device.date.value

Should do its job :slight_smile:

#5

Thanks for reply, but In the Device table, there is only the Device-id field.
I need to show in the form for adding a new Consumption record the last known status for the selected Device and the date when this record was saved.
Query like that:
SELECT TOP 1 Consumptions.Date, Consumptios.Status
FROM Consumptions
INNER JOIN Devices ON Consumpions.Device = Device-id (selected in Lookup)
ORDER BY Consumption.Date DESC;
Thanks

#6

Oh, Ok, something like this:

const data = await doo.table.getData("deviceConsumption", {
    filter: `device.id(eq)${doo.model.id}`,
    limit: 1,
    sort: "date(desc)"
}).then(r => r.data[0].fields)

const previousDate = data.date
const previousState = data.state