ios - AlamofireObjectMapping 错误 : Cannot call GET

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我在 Login.swift 中的 POST 请求返回值，我想将这些值映射到 Particulars.swift 中的变量(例如 API token )并通过扩展写入 Realm 。我该怎么做？

我的 Login.swift 代码:

import Foundation
import Alamofire
import SwiftyJSON
import RealmSwift
import ObjectMapper
import AlamofireObjectMapper


class Login {


init(userName: String, passWord: String) {
    Data.sharedInstance.userName = userName
    Data.sharedInstance.passWord = passWord
}

// call this method to login
func getRequest() {

    Alamofire.request(.POST, Data.todoEndpoint, parameters: ["username": Data.sharedInstance.userName!, "password": Data.sharedInstance.passWord!])
        .responseJSON { response in

            if let result = response.result.value
            {
                let value = JSON(result)

                    if let api_key = value["api_token"].string
                    {
                        print("The token is " + api_key)

                    }

                    else
                    {
                        print("error parsing api token")
                    }

            }
            else
            {
                print("JSON data is nil.")
            }


    }

}


}

---

我正在尝试将我的 JSON 请求映射到 Realm，但我一直被抛出此错误

Generic parameter 'T' could not be inferred

这就是我要找的:(全部在单独的文件中)

发送 GET 请求 -> 存储在 Realm/如果不存在则创建新对象/更新对象

我该如何解决？

调用 GET 请求的代码(完整代码在这里 https://codeshare.io/l4cEQ)

FetchData.get(Particulars.self, success: {
                            print("success!!!")
                    }) {
                         print("fail!!!")
                    }

处理 GET 请求的代码

import Foundation
import Alamofire
import ObjectMapper
import AlamofireObjectMapper
import RealmSwift

class FetchData {
static func get <T:Object where T:Mappable,T:Meta> (type:T.Type,success:()->Void,fail:()->Void)->Void {
    Alamofire.request(Method.GET, type.url())
        .responseArray { (response: Response<[T], NSError>) in
            switch response.result {
            case .Success:
                let items = response.result.value
                if let items = items {
                    let realm = try! Realm()
                    try! realm.write {
                        for item in items {
                            realm.add(item, update: true)
                        }
                    }
                    success()
                }
            case .Failure(_):
                fail()
                break
            }
    }
}
}

映射对象的代码 (Particulars.swift)

import Foundation
import RealmSwift
import ObjectMapper

protocol Meta {
static func url()->String
}

class Particulars: Object, Mappable {
dynamic var name = ""
dynamic var email = ""
dynamic var id = 0
dynamic var profilePicture = ""
dynamic var username = ""
dynamic var apiToken = ""

override static func primaryKey() -> String? {
    return "id"
}

//Impl. of Mappable protocol
required convenience init?(_ map: Map) {
    self.init()
}

func mapping(map: Map) {
    id    <- map["id"]
    name <- map["name"]
    email <- map["email"]
    profilePicture <- map["profile_picture"]
    username <- map["username"]
    apiToken <- map["api_token"]
}

//Impl. of Meta protocol
static func url()->String {
    return "https://bitbucket.org/hyphe/blog-examples/raw/master/fetchData/demoapi/books"
}

}

Answer 1

问题是您的 Particulars 类没有声明它符合 Meta，因此类型检查器不认为它是您的 的有效输入获取 方法。您需要明确声明一致性；仅仅拥有所需的方法是不够的:

class Particulars: Object, Mappable, Meta {
    ...
}