Hi, I got some issues with a form, which has a column to act as a parent (a drop-down list), and a ref_rows as a child.
The value that is allowed to add to the child is dependent on the value selected for the parent.
Below is my sample parent & child data:
Parent a, got 1, 2,3 child
Parent b got 4,5,6 child
In the form to create a new record for this table, I select "a" in the parent column, and then in the child ref rows, I have added child 1 & 2. Before save, I found that I choose a wrong parent, and switch to "b". In this situation, child 1 & 2 in the ref_rows is not belong to parent "b", so it is invalid. Anywhere for me to check the validity of the child upon I change the value for parent? Or simplest way, are there any way for me to create the ref_row list if I change the value for parent?
PS: all happened in a form, before save.
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