How do you model big web forms in an MVC-based web app?

I'm talking about HUGE forms - like medical forms with 1000+ fields.

How do you logically create models for them? Do you include every single little field as seperate model? Do you have the whole form as a HUGE model with every single field? Do you have formsections as models开发者_JS百科 and each formsection has few fields?

I know this might be subjective, but I really want some advice on someone who has dealt with this before and save others a lot of time down the road by avoiding mistakes at the onset.

Your data model should follow an EAV method. Medical systems are well suited to this approach as not all patients are going to have all this information filled in. This method allows you to fill in what is appropriate and populate your model. Makes organizing the data easier as well.

As for organizing it in the view, I suggest you break it up into sections where sections are logically related to each other (past history, family history or by type of information), making the information easier to digest.