Npgsql Code First Json Data Type Annotation about efcore.pg

[chances]

@roji Ah, you're right. I tried to reproduce the error I was seeing with a simpler case and discovered the problem is with this upsert library. It's treating the string-backed JSON property as a text column in its PostgreSQL query generator.

Thank you for helping me look at the problem from a different angle. 😀

[roji]

@balaji8, sorry for not answering this sooner. The recently released RC2 version of the provider has tests which successfully roundtrip a jsonb field, this problem was probably resolved at some point. Can you please check with that version and confirm?

[roji]

Closing as no additional info was provided, but feel free to post back here and I'll reopen if necessary.

[chances]

@roji I'm experiencing this issue with the latest version of Npgsql.EntityFrameworkCore.PostgreSQL, v2.1.1.1

Inserting a new record throws this error: Npgsql.PostgresException: 42804: column "spotify_user" is of type json but expression is of type text

I am using models generated with the EF Core scaffold tool:

[Table("user")]
public partial class User
{
    [Column("id")]
    public long Id { get; set; }
    [Required]
    [Column("spotify_user", TypeName = "json")]
    public string SpotifyUser { get; set; }
    [Required]
    [Column("access_token", TypeName = "character varying")]
    public string AccessToken { get; set; }
    [Column("created_at", TypeName = "timestamp with time zone")]
    public DateTime CreatedAt { get; set; }
    [Column("updated_at", TypeName = "timestamp with time zone")]
    public DateTime UpdatedAt { get; set; }
}

Adding entity.Property(p => p.SpotifyUser).HasColumnType("json"); in OnModelCreating does not resolve the issue.

[roji]

@chances the following code works fine:

class Program
{
    static void Main(string[] args)
    {
        using (var ctx = new BlogContext())
        {
            ctx.Database.EnsureDeleted();
            ctx.Database.EnsureCreated();

            ctx.Blogs.Add(new Blog { Name = "{ \"key\" : \"value\" }" });
            ctx.SaveChanges();
        }

        Console.WriteLine("Done");
    }
}

public class Blog
{
    public int Id { get; set; }
    [Column(TypeName = "json")]
    public string Name { get; set; }
}

public class BlogContext : DbContext
{
    public DbSet<Blog> Blogs { get; set; }

    protected override void OnConfiguring(DbContextOptionsBuilder builder)
        => builder.UseNpgsql(ConnectionString);
}

Can you please double-check the code and versions you're using, and if the issue persists, post a full code sample which triggers the issue?