My website provides services, not products. In certain cases, the customer needs to provide additional information. For example, for an interpretation, the customer must tell us which language they require, the time it is required, and the duration of the session.
I know that I could set up mandatory text fields for these things, but it is a rather inelegant approach, as it does not permit validation of the entered values. Instead, I would like the customer to be able to select the language from a drop-down list, and I would like to validate the entered time in advance.
Has anyone done anything like this already? I've searched but couldn't even find a discussion topic on the matter.
If it has not been done, does anyone have a good idea of how to go about developing this?


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