如何使用 Realm 解码这些模型？

Question

我想将这些模型用于领域和 Json 编码。我怎样才能做到这一点？据我了解，当我使用 Dictionary 时，Realm 不接受它。

class QuestionContainer: Codable {
    
    var questionCategories: [Question]
}

class Question: Object, Codable, Identifiable {
    
    @objc dynamic var title: String
    @objc dynamic var id: String
    @objc dynamic var questions: [QuestionList]
}

class QuestionList: Object, Codable, Identifiable {
    
    @objc dynamic var id: String
    @objc dynamic var question: String
    @objc dynamic var isQuestionImage, isSectionImage: Bool
    @objc dynamic var imageURL: String
    @objc dynamic var imageData: Data?
    @objc dynamic var sections: [QuestionSections.RawValue : String]
    @objc dynamic var selected: String
    @objc dynamic var correct: String
}

enum QuestionSections: String, Codable {
    case A = "A"
    case B = "B"
    case C = "C"
    case D = "D"
}

Answer 1

您的模型应如下所示：

class QuestionContainer: Object, Codable {
    
    @Persisted var questionCategories: List<Question>
}

class Question: Object, Codable, Identifiable {
    
    @Persisted var title: String
    @Persisted var id: String
    @Persisted var questions: List<QuestionList
}

class QuestionList: Object, Codable, Identifiable {

    @Persisted var id: String
    @Persisted var question: String
    @Persisted var isQuestionImage: Bool 
    @Persisted var isSectionImage: Bool
    @Persisted var imageURL: String
    @Persisted var imageData: Data?
    @Persisted var sections: Map<String, String>
    @Persisted var selected: String
    @Persisted var correct: String
}