如何使用 servicestack 中的 ormLite 更新复杂类型字段 (json)

Question

我正在尝试仅更新 jsonb 类型的一列。插入完美无缺，但我不知道如何只更新具有属性 [ComplextType('json')] 的一个字段 db.UpdateOnly(() => new QuestionPoco() {Answers = requestDto.answers}, 其中：q => q.Id.ToString() == question.id.ToString());

Answer 1

现在应该由 this commit 支持，现在是 available on MyGet。

我们还添加了新类型的PgSqlTypes Attributes，您可以使用它来代替[CustomField("json")]，例如：

public class Question
{
    public int Id { get; set; }
    public string Text { get; set; }

    //equivalent to: [CustomField("json")]
    [PgSqlJson]
    public List<Answer> Answers { get; set; }
}

public class Answer
{
    public int Id { get; set; }
    public string Text { get; set; }
}

您可以正常插入/更新，例如：

db.DropAndCreateTable<Question>();

var createTableSql = db.GetLastSql();
Assert.That(createTableSql, Does.Contain("\"answers\" json NULL"));

db.Insert(new Question
{
    Id = 1,
    Answers = new List<Answer>
    {
        new Answer { Id = 1, Text = "Q1 Answer1" }
    }
});

var question = db.SingleById<Question>(1);
Assert.That(question.Answers.Count, Is.EqualTo(1));
Assert.That(question.Answers[0].Text, Is.EqualTo("Q1 Answer1"));

db.UpdateOnly(() => new Question {
        Answers = new List<Answer> { new Answer { Id = 1, Text = "Q1 Answer1 Updated" } }
    },
    @where: q => q.Id == 1);

question = db.SingleById<Question>(1);
Assert.That(question.Answers[0].Text, Is.EqualTo("Q1 Answer1 Updated"));