select - 关键字不适用于odata,automapper和efcore

问题描述 投票:0回答:1

我正在尝试将odata查询应用于我的automapper - 在我的efcore上下文中进行映射。在我使用$ select查询选项之前,所有内容都按预期工作。

当我尝试在我的odata-controller的请求中使用select关键字时,我得到了异常:

SerializationException:'SourceSourceInjectedQuery`2'无法使用ODataMediaTypeFormatter序列化。

我正在使用UseAsDataSource - Extension方法,因为它被推荐为here on github

这是我的oDataController:

public class StudentsController : ODataController {
    private readonly SchoolContext schoolContext;

    public StudentsController(SchoolContext schoolContext) {
        this.schoolContext = schoolContext;
    }
    [EnableQuery]
    public IActionResult Get() {

        return Ok(
            schoolContext
            .Students
            .UseAsDataSource()
            .For<StudentVM>()
        );
    }
}

这是我的EFCore实体:

public class Student {
    public int ID { get; set; }
    public string LastName { get; set; }
    public string FirstMidName { get; set; }
    public DateTime EnrollmentDate { get; set; }

    public ICollection<Enrollment> Enrollments { get; set; }
}

这是我对automapper的mappingprofile:

public class StudentVM {
    public int ID { get; set; }
    public string  LastName { get; set; }
    public string FirstMidName { get; set; }
}

public class StudentProfile : Profile {
    public StudentProfile() {
        CreateMap<Student, StudentVM>();
    }
}

我需要一些特定的映射才能执行此操作吗?

asp.net-core odata automapper ef-core-2.0
1个回答
0
投票

我发现我在startup.cs中配置odataservice时出错了

    private static IEdmModel GetEdmModel() {
        ODataConventionModelBuilder builder = new ODataConventionModelBuilder();
        builder.EntitySet<Student>("Students");
        builder.EntitySet<Course>("Courses");
        return builder.GetEdmModel();
    }

我把我的实体而不是我的ViewModel放在那里。这是固定代码:

    private static IEdmModel GetEdmModel() {
        ODataConventionModelBuilder builder = new ODataConventionModelBuilder();
        builder.EntitySet<StudentVM>("Students");
        builder.EntitySet<CourseVM>("Courses");
        return builder.GetEdmModel();
    }

现在它按预期工作了

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