我的ConfigureServices中有一些代码在运行迁移时失败:
dotnet ef migrations list
我正在尝试添加证书但它无法找到该文件(它在整个项目启动时起作用).那么有办法做这样的事情:
if (!CurrentEnvironment.IsMigration()) {
doMyStuffThatFailsInMigration()
}
这样我可以保持我的代码不变,但只是在迁移中不运行它时执行它.
谢谢
最佳答案 我当前的解决方案是检测是否未发生迁移:
using System.Linq;
// app is of type IApplicationBuilder
// RegisteredDBContext is the DBContext I have dependency injected
using (var serviceScope = app.ApplicationServices.GetRequiredService<IServiceScopeFactory>().CreateScope())
{
var context = serviceScope.ServiceProvider.GetService<RegisteredDBContext>();
if (context.Database.GetPendingMigrations().Any())
{
var msg = "There are pending migrations application will not start. Make sure migrations are ran.";
throw new InvalidProgramException(msg);
// Instead of error throwing, other code could happen
}
}
这假定迁移已经同步到数据库.如果仅调用了EnsureDatabase,则此方法不起作用,因为迁移仍处于挂起状态.
context.Database上还有其他方法选项. GetMigrations和GetAppliedMigrations.