![]() \MyProjectWeb\MyProjectWeb.csprojįront-Loaded Parameters (for Convenience) \MyProjectModel\MyProjectModel.csproj -startup-project. If for some reason the example above doesn’t work, you can point specifically to the actual project files: dotnet ef migrations add initialcreate -project. If you’re already in the root of the solution directory, providing the names of the projects as parameters is sufficient: dotnet ef migrations add initialcreate -project MyProjectModel -startup-project MyProjectWeb -startup-project: The project which contains the connection strings and references the model project.-project: The project containing the model in which the migrations will be applied.This is where the following parameters come in handy: And you can’t call it from the Web/API/Console projects which reference the class library as the tool expects the model to be in the project from which it is called. If you call it inside the model class library project, it won’t be aware of the connection strings, as those are controlled within the Web/API/Console projects. In this scenario, simply calling the dotnet ef migrations command won’t work. It is pretty common to create your model as a separate Class Library project within the same solution as your front-end Web/API/Console projects. Migrations in Model in Separate Class Library Note: Specifying as 0 without a parameter has the exact same effect as running the command with no parameter, as it scripts all migrations. going from an empty database to migration3: dotnet ef migrations script -idempotent -output "migration-script.sql" 0 migration3 Specify as 0 and another migration as to script migrations from the initial database state (empty) to another migration, e.g. from migration2 (already applied to db & not included in script) to migration5: dotnet ef migrations script -idempotent -output "migration-script.sql" migration2 migration5 Specify both the and parameters to script migrations to bring the database from one migration to another migration, e.g. Specify only the parameter to script migrations to bring the database from the migration (already applied to db & not included in script) to the latest migration: dotnet ef migrations script -idempotent -output "migration-script.sql" migration2 Whether it’s yet another set of changes to an existing model or you’ve just created a new model, the command is the same: dotnet ef migrations add // and parameters come in handy. and you’re unsure of which version is installed, attempt to update to the latest version: dotnet tool update -global dotnet-efĪfter making changes to a model, you can bundle those changes into a migration. If you get the error message Tool 'dotnet-ef' is already installed. ![]() To install the tool, open the command prompt in Visual Studio using menu path Tools -> Command Line -> Developer Command Prompt, then enter the following command: dotnet tool install -global dotnet-ef If it’s not installed, running any of the dotnet ef commands on this page will result in the following error: Could not execute because the specified command or file was not found. ![]() It is installed globally and not per-project, so it may already be installed if you’ve used migrations on another project. The “Command Line” referenced throughout this guide is the Visual Studio Developer Command Prompt ( Tools -> Command Line -> Developer Command Prompt)įirst you need to install the Entity Framework Core Tools for the. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |