Change query filter on execute

In the database the type is a string, but in the code I put it to be bool, making the following configuration:

Simplified configuration:

public class ContaConfiguration : IEntityTypeConfiguration<Conta>
{
    public void Configure(EntityTypeBuilder<Conta> builder)
    {
        builder.HasKey(c => new { c.Codigo });
        builder.Property("DbImprimir");
    }
}

Simplified entity:

[System.ComponentModel.DataAnnotations.Schema.Table("conta")]
public partial class Conta
{
    [System.ComponentModel.DataAnnotations.Key()]
    [System.ComponentModel.DataAnnotations.Schema.Column("Codigo")]
    public int Codigo { get; set; }

    [System.ComponentModel.DataAnnotations.Schema.NotMapped]
    public bool? Imprimir { get; set; }

    [System.ComponentModel.DataAnnotations.Schema.Column("Imprimir")]
    private string DbImprimir { get => Imprimir.IsTrue() ? "Sim" : "Não"; set => Imprimir = value?.TryCast<string>() == "Sim"; }
}

When I put the filter below does not work, because the ‘Imprimir’ property is not mapped, does it have any before executing the query change the property to ‘DbImprimir’ in Query Linq?

using (var db = new DbContext())
{
    var test = db.Conta.Where(equipeQ => equipeQ.Imprimir == true).FirstOrDefault();
}

[ralmsdeveloper]

Did the part I put above help with your initial question?

I suggest that when you open the problem, tell the environment that you are trying to run the tests. Example:

Further technical details

EF Core version: (found in project.csproj or packages.config) Database Provider: (e.g. Microsoft.EntityFrameworkCore.SqlServer) Operating system: IDE: (e.g. Visual Studio 2017 15.4)

By doing this, the team tries to identify more quickly or the community.

[ajcvickers]

@ErliSoares When 2.1 is released this will be possible using value conversions–that is, it will be possible to configure the bool property in the model to be converted to and from a string in the database. It should then be possible to use it in the query filter directly.

In 2.0, I don’t think that there is a way to do this because the query filter needs the actual mapped property, which has to be a string if it will be stored to the database as a string.

Closing as duplicate of #242