User1768510565 posted
I am trying to keep BooksContext.cs file in a folder called Contexts.
I have a single Book class inside Entities folder. Hence, below is the code in BookContext.cs file.
I have used the following command at Package Manager Console to enable migrations.
PM>Enable-Migrations -ContextTypeName Books.API.Contexts.BooksContext
But, I'm getting below error: The type BooksContext does not inherit from DbContext. The DbMigrationsConfiguration.ContextType property
must be set to a type that inherits from DbContext.
Following the error, I am not sure where and how to set DbMigrationsConfiguration.ContextType property
I couldn't get much help from google, and I am not sure what I am missing. Can anyone please help me!
namespace Books.API.Contexts
{
public class BooksContext : DbContext
{
public DbSet<Book> Books { get; set; }
public BooksContext(DbContextOptions<BooksContext> options)
: base(options)
{
}
protected override void OnModelCreating(ModelBuilder modelBuilder)
{
modelBuilder.Entity<Author>().HasData(
new Author
{
Id = Guid.Parse("e4da4ec7-0fe1-46d8-a133-4374ccd54df9"),
FirstName = "George",
LastName = "RR Martin"
},
new Author
{
Id = Guid.Parse("5afd341b-95df-427a-80df-3ed0995a5da6"),
FirstName = "Stephen",
LastName = "Fry"
},
new Author
{
Id = Guid.Parse("4c8bd0d6-14b1-4284-9be1-1cb78c9fc871"),
FirstName = "James",
LastName = "Elroy"
},
new Author
{
Id = Guid.Parse("fc433048-0153-4230-a15b-df1808de27d6"),
FirstName = "Douglass",
LastName = "Adams"
}
);
modelBuilder.Entity<Book>().HasData(
new Book
{
Id = Guid.Parse("92f5d8a9-0141-4bbc-8ee1-61ecdab16cda"),
AuthorId = Guid.Parse("e4da4ec7-0fe1-46d8-a133-4374ccd54df9"),
Title = "The Winds of Winter",
Description = "The book that seems like impossible to write."
},
new Book
{
Id = Guid.Parse("1c4ea7c7-f410-4173-b6bd-900f0dd95472"),
AuthorId = Guid.Parse("5afd341b-95df-427a-80df-3ed0995a5da6"),
Title = "A Game of Throws",
Description = "First novel in a song of Ice and Fire"
},
new Book
{
Id = Guid.Parse("fd15e575-3d0c-4b92-9b40-63d0f7d58108"),
AuthorId = Guid.Parse("4c8bd0d6-14b1-4284-9be1-1cb78c9fc871"),
Title = "Mythos",
Description = "The Greek myths are amongst the best stories ever told"
},
new Book
{
Id = Guid.Parse("d544691c-1a10-4dcd-853a-f7bbd90543ff"),
AuthorId = Guid.Parse("fc433048-0153-4230-a15b-df1808de27d6"),
Title = "American Tabloid",
Description = "It is a 1995 novel"
}
);
base.OnModelCreating(modelBuilder);
}
}
}
