Modale validation

Question

Hi All,

Is there a way to have a custom function when a user click on the ok button of a modal?
I'd like to validate that an edit-field is filled before exiting the modal and if the validation is not correct, show a new message in red inside the modal to show where is the problem (as the form on Internet)

Currently, I have an option by saving the elements and show a new modal if the validation doesn't pass, but I would prefer to do it by binding or something similar...

Thank you
Martin

johnrellis · Accepted Answer

You can enable or disable the action button of the dialog by setting the "actionBinding" parameter to a property binding:

local result = LrDialogs.presentModalDialog {title = "My Dialog",

contents = controls,

actionBinding = {enabled = {bind_to_object = prop,

key = "actionEnabled"}}}

You can use more complicated bindings created by LrBinding, e.g. to call a function that evaluates a more complicated condition.

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