Entity Framework Core jsonb column type

Question

I am using Entity Framework Core with npgsql postgresql for Entity Framework Core.

My question is, using migrations, how do I mark a class property to generate a JSONB column type?

For example:

public class MyTableClass
{
    public int Id { get; set; }

    // My JSONB column
    public string Data { get; set; }
}

Thanks in advance.

Solution 1

Based on H. Herzl comment:

My final solution was something like this:

public class MyTableClass
{
    public int Id { get; set; }

    [Column(TypeName = "jsonb")]
    public string Data { get; set; }
}

Migrations generated this:

Data = table.Column<string>(type: "jsonb", nullable: true),

When updated the database with migrations, the Data column was created correctly with jsonb type.

Thank you H. Herzl!

Solution 2

using string as was suggested by @bruno.almeida is a nice solution but couldn't be queried.

additional approaches are to use:

• As System.Text.Json DOM types (JsonDocument or JsonElement)
• As strongly-typed user-defined types (POCOs)

JsonDocument being my favorite since it could be queried, is flexible and fast to setup, e.g.:

public JsonDocument Customer { get; set; }

more details at: https://www.npgsql.org/efcore/mapping/json.html