EF 4.3 Auto-Migrations with multiple DbContexts in one database

Question

I\'m trying to use EF 4.3 migrations with multiple code-first DbContexts. My application is separated into several plugins, which possibly have their own DbContext regarding

Answer 1

I have a working site with multiple contexts using migrations. However, you do need to use a separate database per context, and it's all driven off of a *Configuration class in the Migrations namespace of your project, so for example CompanyDbContext points to Company.sdf using CompanyConfiguration. update-database -configurationtypename CompanyConfiguration. Another LogDbContext points to Log.sdf using LogConfiguration, etc.

Given this works, have you tried creating 2 contexts pointing at the same database and telling the modelbuilder to ignore the other context's list of tables?

protected override void OnModelCreating(DbModelBuilder modelBuilder)
{
    modelBuilder.Ignore();
    // more of these
}

Since the migrations work with the ModelBuilder, this might do the job.

The crappy alternative is to avoid using Automatic Migrations, generate a migration each time and then manually sift through and remove unwanted statements, then run them, although there's nothing stopping you from creating a simple tool that looks at the Contexts and generated statements and does the migration fixups for you.