What is the best way to handle foreign key Object which allow NULL value in UI

[Dawn Chen]

Dear all,

Assume Ticket doesn't really need a product, a new ticket can save without a product assigned to it. 

I've tried use Listbox which bind dynamic list (table column) to it, there is no way assign NULL to product of ticket, always has a default value if you have products.

I also tried a ProductPickForm, yes, you can leave it blank which save a NULL value, but once you pick a product, saved, you can never assign NULL value back to it.

so my question, is there any built in input in Openbiz can handle this case smoothly without additional code.

[Rocky Swen]

there is an attribute of listbox called BlankOption. you can try use it to set the value as Null

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[Dawn Chen]

Got it.

Thanks.

在 2014年3月20日星期四UTC+8下午11时35分25秒，Rocky Swen写道：