在Pluralsight课程中进行EF7迁移 [英] EF7 migration in Pluralsight course

问题描述

Shawn Wildermuth的Pluralsight课程使用ASP.NET Core RC1，MVC 6，EF7和AngularJS构建Web应用程序"中的第二次迁移是否还有其他问题?

Is anyone else having problems with the second migration in Shawn Wildermuth's Pluralsight course "Building a Web App with ASP.NET Core RC1, MVC 6, EF7 & AngularJS"?

具体来说，命令

dnx ef migrations add IdentityEntities

导致此异常:

GenericArguments[0], 'TheWorld.Models.IWorldRepository', on 'Microsoft.Data.Entity.Infrastructure.IDbContextFactory`1[TContext]' violates the constraint of type 'TContext'.

第一次迁移和数据库创建似乎进展顺利，所以我不确定是什么原因造成的.

The first migration and database creation seemed to go fine, so I'm not sure what's causing this.

推荐答案

我刚刚通过从解决方案资源管理器中删除整个Migrations文件夹来解决此问题.我不确定导致此错误的确切原因，但我认为，如果将迁移命名为同一事物(在您的情况下为IdentityEntities)，则很可能会出现问题.

I just fixed this by deleting the entire Migrations folder from Solution Explorer. I am not sure exactly what causes this error, but I think if you name your migrations the same thing (IdentityEntities in your case) the problem is likely to occur.

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