<== not working for me

[Sina-KH]

Hi,

I'm trying to parse my custom models but <== json["customModel"] not working for me!

Example :

struct oneModel: ArrowParsable {

var customModel                = CustomMedel()

init() {
}
init(json: JSON) {
    customModel <== json["customModel"]
}

}

struct CustomModel: ArrowParsable {

var id                  = Int()
var title               = String()

init() {

}
init(json: JSON) {
    id              <-- json["id"]
    title           <-- json["title"]
}

}

But I can use json.valueForKeyPath without any problems!!!

[s4cha]

Hi @sina-kh ,

I just tried an example in a test project and I can't unfortunately reproduce the issue :(

According to your example I assume your json looks like so :

{
    "customModel": {
        "id" : 1234,
        "title" : "Great!"
    }
}

struct OneModel:ArrowParsable {

    var customModel = CustomModel()

    init() { }
    init(json: JSON) {
        customModel <== json["customModel"]
    }
}

struct CustomModel:ArrowParsable {

    var id = Int()
    var title = String()

    init() { }
    init(json: JSON) {
        id <-- json["id"]
        title <-- json["title"]
    }
}

then I run :

 let json:JSON = jsonForName("OneModel")!
 let m = OneModel(json: json)
 print(m.customModel.id)
 print(m.customModel.title)

which prints out :

1234
Great!

Do you have a compiler error? a runtime crash? or something like that ?

[Sina-KH]

Unbelievably It's working now!!! Before this It wasn't parsing! Sorry about that.

But I have another problem bro, How can I parse an array of custom objects with Arrow?

[s4cha]

Hey @sina-kh Excuse the late reply. At the moment there is no Arrowish way to easily parse arrays. The way you would do it is the manual way which looks like so :

for a property

var phoneNumbers:[PhoneNumber] = [PhoneNumber]()

and the following JSON

{
    "id": 15678,
    "created_at": "2013-06-07T16:38:40+02:00",
    "name": "Francky",
    "stats": {
        "numberOfFriends": 163,
        "numberOfFans": 10987
    },
    "phoneNumbers": [{
        "label": "house",
        "number": "9809876545"
    }, {
        "label": "cell",
        "number": "0908070656"
    }, {
        "label": "work",
        "number": "0916570656"
    }]
}

The parsing would be the following :

        phoneNumbers = [PhoneNumber]()
        if let pns = json["phoneNumbers"] as? [AnyObject] {
            for pn in pns {
                phoneNumbers.append(PhoneNumber(json: pn))
            }
        }

of course with the following mapping :

struct PhoneNumber {
    var label:String = ""
    var number:String = ""
}

extension PhoneNumber:ArrowParsable {
    init(json: JSON) {
        label <-- json["label"]
        number <-- json["number"]
    }
}

Hope it helps :)

[s4cha]

Actually here is a snippet that would enable parsing arrays with <== syntax :)

public func <== <T:ArrowParsable>(inout left:[T], right: AnyObject?) {
    left = [T]()
    if let pns = right as? [AnyObject] {
        for pn in pns {
            left.append(T(json:pn))
        }
    }
}

[s4cha]

Array parsing has been added in the latest version :)

[Sina-KH]

Good to hear that. Finally I can use arrow in my projects easier than ever! Thanks, Good Job!