Codable Decodable JSON 从字符串到枚举

Question

我正在尝试使用 codable 解码 JSON。我想知道是否有一种方法可以将 return HelloModel 的 typeCustomer 的 codable 自定义为 TypeOfCustomerEnum 类型而不是 String？

示例：

{
"name": "Hello",
"lastName": "World",
"typeOfCustomer": "Student"
}

enum TypeOfCustomerEnum: String {
   let Student = "Student"
   let Paying = "Paying"
   let NonPaying = "Nonpaying"
}

struct HelloModel: Codable {
   let name: String
   let lastName: String
   let typeOfCustomer: TypeOfCustomerEnum // JSON for TypeOfCustomer is a String but TypeOfCustomer wanted
}

Answer 1

类型 TypeOfCustomerEnum 也必须符合 Codable 并且大小写（必须是大小写）应该小写并且文字字符串必须匹配 JSON 值

enum TypeOfCustomerEnum: String, Codable {
   case student = "Student"
   case paying = "Paying"
   case nonPaying = "NonPaying"
}

struct HelloModel: Codable {
   let name: String
   let lastName: String
   let typeOfCustomer: TypeOfCustomerEnum 
}

Codable Decodable JSON 从字符串到枚举

Codable Decodable JSON from String to Enum

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enums

codable

decodable