问题
In EF6 I could retrieve migrations and run it step by step.
Is there a way to do something similar in EF Core?
EF 6 Code
public static void RunMigration(this DbContext context, DbMigration migration, string providerName, string manifest)
{
var prop = migration.GetType().GetProperty("Operations", BindingFlags.NonPublic | BindingFlags.Instance);
if (prop != null)
{
IEnumerable<MigrationOperation> operations = prop.GetValue(migration) as IEnumerable<MigrationOperation>;
MigrationSqlGenerator generator = (new DbMigrationsConfiguration()).GetSqlGenerator(providerName);
var statements = generator.Generate(operations, manifest);
foreach (MigrationStatement item in statements)
context.Database.ExecuteSqlCommand(item.Sql);
}
}
回答1:
You can use the GetMigrations extension method of the DatabaseFacade
class (returned by Database
property of the DbContext
) to get the list of the pending migration names.
Then you can obtain IMigrator service and use Migrate method passing each target migration name:
using Microsoft.EntityFrameworkCore;
using Microsoft.EntityFrameworkCore.Infrastructure;
using Microsoft.EntityFrameworkCore.Migrations;
DbContext db = ...;
var pendingMigrations = db.Database.GetPendingMigrations().ToList();
if (pendingMigrations.Any())
{
var migrator = db.Database.GetService<IMigrator>();
foreach (var targetMigration in pendingMigrations)
migrator.Migrate(targetMigration);
}
来源:https://stackoverflow.com/questions/45780598/entity-framework-core-2-0-run-migrations-step-by-step