How do I perform database initialization/seeding with EF7?

Hi,

I’ve created a code-first model with EF7 beta7 in an ASP.NET 5 MVC 6 project.

Now I want to have some users registered and some other sample data initialized when the application runs, how is this done the proper way?

I used to do this with DbInitializer, but I believe this technique has been retired now. The whole subject of initialization is blurry to me.

When I create a new project and expand the data model, am I supposed to erase the Migrations folder and add a new migration all anew?

Is there a tutorial that explains how migrations, snapshots, and database initialization work in EF7?

[rowanmiller]

Nothing yet, but we will have content in our docs.

You would put initialization logic in your app startup - Main, Startup.cs, TextFixture, etc. depending on the application type.

If you are using migrations there is context.Database.Migrate(). If you don’t want migrations and just want a quick database (usually for testing) then use context.Database.EnsureCreated()/EnsureDeleted().

Seed data would just go inline with your startup code too, here is an example in an ASP.NET 5 application:

• https://github.com/rowanmiller/UnicornStore/blob/master/UnicornStore/src/UnicornStore/Models/UnicornStore/UnicornStoreExtensions.cs#L9
• https://github.com/rowanmiller/UnicornStore/blob/master/UnicornStore/src/UnicornStore/Startup.cs#L107

[jeffmoretti86]

Hi there,

I myself am not Rowan, and I do not have a guide to setup and run MVC/EF7. However, if you want to see some sample code on how to seed with EF7, you may find my blog posting helpful.

http://coderhints.com/ef7-seed-user/

Regards,

Jeff

From: gclaasen Sent: Monday, May 30, 2016 10:10 AM To: aspnet/EntityFramework Cc: jeffmoretti86 ; Comment Subject: Re: [aspnet/EntityFramework] How do I perform database initialization/seeding with EF7? (#3042)

Hi Rowan,

I am starting out with MVC and EF7 and need help. i came across your UnicornStore sample app and would like to know whether you have a guide to how to set it up to run. i tried everything and nothing.

your help will be appreciated.

Thanks ([e-mail])

— You are receiving this because you commented. Reply to this email directly, view it on GitHub, or mute the thread.