Swift ObjectMapper loop in nested

Question

I have this mapper:

import Foundation
import ObjectMapper

class Article: Mappable {
    var id: Int!
    var name: String!
    var image: String!
    var children: Article!

    required init?(_ map: Map) {
        mapping(map)
    }

    func mapping(map: Map) {
        id <- map["id"]
        name <- map["name"]
        image <- map["image"]
        children <- map["children"]
    }
}

and then i need to loop and find article by id:

func getArticleName(aid) {
    for article in articleList {
        if aid == article.id {
            return article.name
        }
        for child in article.children {
            if aid == child.id {
                return child.name
            }
        }
    }
    return ""
}

articleList is array of that Article mappable class.

Now when i loop in children, i get this error: Value of type 'Article' has no member 'Generator'

How can i loop in children array?

What's the question? Do you not understand that error message? — matt
– matt, Commented Sep 24, 2015 at 16:08
It's not an array. That's what the error message is telling you. — matt
– matt, Commented Sep 24, 2015 at 16:09

matt · Accepted Answer · 2015-09-24 16:10:38Z

1

I don't know what ObjectMapper is, but the error message is simple enough. You are saying:

class Article: Mappable {
    var children: Article!
}

Thus, an article's children is an Article. So then when you say:

for child in article.children {

...the compiler stops you; an Article, which is what the children is, is not something about which you can say for ... in.

answered Sep 24, 2015 at 16:10

matt

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