i use lightning-edit-form in my lighting web component. Would like to validate some backend logic based on the customer inputs entered in the edit form using apex class method. How to validate the logic and show lightning error message before clicking save button.
i tried to show the sample error message for testing on the event of submit or onclick of the lightning-record-edit-form.
how to check the logic and through the error before save the record.
I have a record edit form with multiple custom lookup fields. Standard validation rules on lookup fields with an invalid input would give an error message "An invalid option has been choosen". Looks like lightning:inputfield for lookup doesnot fire these validations. Any workaround would be greatly appreciated. On submit, it would not error out and would not save this invalid value.
