Non-global fields for custom content types?

Question

I've been tasked with creating a fairly complex system in sharepoint 2010. Coming from a background of from-scratch .NET applications, I'm used to defining tables with their own "local" columns.

My approach to this sharepoint project however, is leaving me with the sense, I'm doing something wrong.

I fired up VS2010 and started making content types, for which I want to make list definitions, and then list instances, so my entire "database" of sharepoint lists will be created at the flick of a feature. (Please stop me, if I'm going about this the wrong way)

Now, in creating my content types, I'm defining my < fields> right above my < ContentType> like so:

<Field ID="{GUID]" Name="UserLookup" DisplayName="User" Type="Lookup" FieldRef="ID" ShowField="ID"></Field>
<ContentType ID="0x01004df1f9fc39ee49569a3dfc2967f81f64"
...>
<FieldRefs>
  <FieldRef ID="{GUID}" Name="UserLookup" DisplayName="User"/>
</FieldRefs>

I have no problem getting this to work. However, when I create my other content types and lists, they're going to need some of the same fields, but not necessarily be the exact same field - it might just be the name and type that's similar. But since these fields are created as a site column, no two can have the same name. It's like they're "global".

Is there no way to create a content type with fields defined JUST for that content type? Allowing other content types fields with the same name, but different definitions?

Answer 1

You can override some of the properties content type per content type (DisplayName, Required, etc.). This will allow you to reuse existing types.

If replacing properties is not enough, you can create different fields, with different staticname, name and ID, but with same display name (could lead to confusion to user though).

A last word, while it's not possible to create fields from a specific content type, you can create fields specific to list.