![]() This is explained in the course demos, but still a step you may overlook in your excitement! Make sure that you are running the command from the folder that contains the project where the Tools package is referenced. ![]() NET framework, then you’ll need to use the PowerShell commands e.g. If you’re following my course, that’s explained. is for the CLI (dotnet commands)īe sure you’ve referenced the Tools.DotNet version of the package so that you have access to the CLI commands. The current stable tooling for EF Core migrations is split into two packages.There are a few key things to watch out for. While some of these notes are specific to the project.json use in the course, I’ve also added tips for using dotnet ef with the newer csproj/msbuild support. Problems You May Encounter with ‘dotnet ef’ I worked through these with them but wanted to write down the suggestions I’d made and have a single blog post I could point to. Of the nearly 2000 who have already watched the course since it’s release less than 2 weeks ago, a few people ran into some confusion with the versioning and getting the “no executable found” message. The course’s focus is on EF Core, so as long as I could hand-hold users through the project.json setup stuff without the need to make them expert at that, it was the right way to go. But Pluralsight and I both agreed that it made sense not to ALSO force users to the bleeding edge, not even released VS2017 for the demos. So in the course means that we’re stuck with project.json support and tooling that’s not quite aligned. VS2015 only supports project.json and the project templates set you up for. While I did recreate the VS2017 demos in RC3 right before we published the course, we chose to leave the rest of the. I recorded my Entity Framework Core: Getting Started course on Pluralsight while VS2017 was still in beta. The tooling for VS2015 is outdated and there are no plans to bring them up-to-date for the new csproj support. The most common one is No executable found matching command "dotnet-ef" A Note If Your Coming from My Pluralsight EF Core Course ![]() NET core), it’s easy to run into a problem when attempting to use EF Core migrations at the command line. NET Core app (ASP.NET Core or other app sitting on. If you find this to not be the case, please provide feedback and we will make it more efficient.Updated Maafter Visual Studio 2017 was released.Īlso, keep in mind that I have been updating this post (and will continue to do so) as I discover new ways people are hitting problems with dotnet ef. You just define your naming conventions once.Īlso, because of the fluent syntax, you'll find you have to type a lot less than you do with EFCore migrations. In the above example, you don't need to type out PK_Course in your primary key definition, because FluentMigrator supports "Don't Repeat Yourself" principle via naming conventions and "knows" that is the correct name for your primary key. ![]() WithColumn("Title").AsString().Nullable() WithColumn("Credits").AsInt32().NotNullable() WithColumn("CourseID").AsInt32().NotNullable().PrimaryKey() Protected override void Down(MigrationBuilder migrationBuilder)įluentMigrator Table.PrimaryKey("PK_Course", x => x.CourseID) Protected override void Up(MigrationBuilder migrationBuilder)ĬourseID = table.Column(nullable: false), Source: public partial class InitialCreate : Migration That said, here is how Microsoft recommends writing migrations with EFCore, compared with the same logic in FluentMigrator: EFCore Entity Framework Core does this through PowerShell command-line interface Add-Migration, which keeps track of a ModelSnapshot state. By comparison, Entity Framework Core can use its fluent model building syntax and automatically infer up/down migrations, and you can focus primarily on writing data migrations. Technically, FluentMigrator does not "generate" migrations for you.
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