OSX .Net Core Project - Error messages you may receive
dotnet ef migrations add InitialCreate => Startup project 'Catalog.DataAccess.csproj' targets framework '.NETStandard'. There is no runtime associated with this framework, and projects targeting it cannot be executed directly. To use the Entity Framework Core .NET Command-line Tools with this project, add an executable project targeting .NET Core or .NET Framework that references this project, and set it as the startup project using --startup-project; or, update this project to cross-target .NET Core or .NET Framework. For more information on using the EF Core Tools with .NET Standard projects, see https://go.microsoft.com/fwlink/?linkid=2034781
Cover project to core
dotnet ef migrations add InitialCreate => Your startup project 'Catalog.DataAccess' doesn't reference Microsoft.EntityFrameworkCore.Design. This package is required for the Entity Framework Core Tools to work. Ensure your startup project is correct, install the package, and try again.
install package Microsoft.EntityFrameworkCore.Design to DataAccess project
dotnet ef migrations add InitialCreate => System.InvalidOperationException: No database provider has been configured for this DbContext. A provider can be configured by overriding the DbContext.OnConfiguring method or by using AddDbContext on the application service provider. If AddDbContext is used, then also ensure that your DbContext type accepts a DbContextOptions object in its constructor and passes it to the base constructor for DbContext. ::Error:: No database provider has been configured for this DbContext. A provider can be configured by overriding the DbContext.OnConfiguring method or by using AddDbContext on the application service provider. If AddDbContext is used, then also ensure that your DbContext type accepts a DbContextOptions object in its constructor and passes it to the base constructor for DbContext.
override OnConfiguring method with this
//in EfCoreContext.cs
protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder) {
optionsBuilder.UseMySQL(@"Server=localhost;Database=CampTest;User=root;Password=47854785zZ.;");
base.OnConfiguring(optionsBuilder);
}
dotnet ef migrations add InitialCaner => Done. To undo this action, use 'ef migrations remove' 👌👌👌👌
dotnet ef database update => Failed executing DbCommand (18ms) [Parameters=[], CommandType='Text', CommandTimeout='30']
SELECT MigrationId, ProductVersion
FROM __EFMigrationsHistory
ORDER BY MigrationId;
:error: Table 'camptest.__efmigrationshistory' doesn't exist
open your db shell and run this script
CREATE TABLE __EFMigrationsHistory ( MigrationId nvarchar(150) NOT NULL, ProductVersion nvarchar(32) NOT NULL, PRIMARY KEY (MigrationId) );