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Editorial Team
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Asked: 2026-05-30T23:01:22+00:00

I have setup EF4.2 (Database First) with my MVC3 site. I have to entities

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I have setup EF4.2 (Database First) with my MVC3 site. I have to entities fixture and fixture period. Fixture periods have start and end dates.

I need to allow customer to add/edit fixture periods in a single view in my MVC3 site.

I have this working. I also managed to validate that fixture period start/end dates are in the right order. I did that in a partial class of the fixture period implemetimng IValidateObject. However now I need to validate that the fixture periods themselves don’t overlap with each other.

How should I ensure periods don’t overlap? Where should I check for this? I was going to do it at the ViewModel level (which seemed easy) however it seems a domain level concern. Should it be in the entity, repository, a service layer?

Any advice?

Thanks

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1 Answer

  1. Editorial Team

    Answer was to create an after trigger in the database for insert and update. If the rows overlapped then I raised an error and rolled back insert. I then caught the SQL Exception on SaveChanges on Object Context and handled by adding an error to ModelState.

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