如何设置启动项目以更新已发布的 ASP.NET5 中的数据库 | MVC6项目？

Question

There are two EF7 db-contexts in a MVC6 (beta-7) project. First of them (let's call it StartupContext ) is in a startup project ( MyProject.Startup ). Second (let's call it DataContext ) is in a separate assembly ( MyProject.Data ).

There is a command in the project.json files of the MyProject.Startup and the MyProject.Data :

"dependencies": {
  "EntityFramework.SqlServer": "7.0.0-beta7",
  "EntityFramework.Commands": "7.0.0-beta7",
  ...
}

"commands": {
  "ef": "EntityFramework.Commands"
  ...
}

I can use it for a database updating like this:

• for an updating of the StartupContext I run the ef command from a startup folder:

  dnx ef database update

• for an updating of the DataContext I run the ef command from a folder of the MyProject.Data project:

  dnx ef database update -c DataContext -s MyProject.Startup

It works perfectly but only from sources (from not published project). I get exception like this for an updating of the DataContext from a published project:

System.IO.FileNotFoundException: Could not load file or assembly "MyProject.Data" or one of its dependencies.

I tried various approaches:

dnx ef database update -c DataContext -s MyProject.Startup
dnx ef database update -c DataContext -s C:\Published\approot\packages\MyProject.Startup
dnx ef database update -c DataContext -s C:\Published\approot\packages\MyProject.Startup\1.0.0\root\
dnx ef database update -c DataContext -s C:\Published\approot\packages\MyProject.Startup\1.0.0\lib\MyProject.Startup.dll
dnx ef database update -c DataContext -s %~dp0approot\packages\MyProject.Startup
dnx ef database update -c DataContext -s %~dp0approot\packages\MyProject.Startup\1.0.0\root\

I also tried to copy the MyProject.Startup.dll to a folder with the MyProject.Data but unsuccessfully.

Has anybody else had a similar problem?

How can I update a database and create a migration from a published project?

Answer 1

This is a bug in EF7-beta7 and should be fixed in the upcoming RC1 release of EF.

If you need (as in very much so) this feature before the, you could use the nightly builds of EF. (Caution: nightly builds have a lot of instability.)