Indexing into NSArray with JSON object

Question

I receive an object that is sent as a pointer to a collection. I can access the fields directly as an NSDictionary.

The emails field is sent as an array, and I receive it in parentheses. Currently I get the emailaddress by what I feel is a roundabout method. How can I most efficiently get to the email address?

let allDoc = users.allDocuments[0]
print("allDoc: \(allDoc)")

let emailsArray = users.allDocuments[0].valueForKey("emails") as! NSArray
print("emailsArray: \(emailsArray)")

let emailAddress = emailsArray[0]["address"] as! String
print("emailAddress: \(emailAddress)")

Console output:

allDoc: <METDocument key: <collection: users, ID: kzzw3vcqukD62xEyz>, fields: {
    emails =     (
                {
            address = "[email protected]";
            verified = 1;
        }
    );
    profile =     {
        address =         {
            city = "";
            country = nor;
            lineOne = "";
            lineTwo = "";
            zip = "";
        };
        card =         {
            last4 = 4242;
            verified = 1;
        };
        filledOut = 1;
        name =         {
            first = XXXX;
            last = XXXX;
        };
        phone = 9999999999;
        validated = 1;
    };
}>
emailsArray: (
        {
        address = "[email protected]";
        verified = 1;
    }
)
emailAddress: [email protected]

Update your question with the results of printing users.allDocuments[0]. — rmaddy
– rmaddy, Commented Oct 31, 2015 at 18:35

rmaddy · Accepted Answer · 2015-10-31 19:02:44Z

1

If you just want the email address you could simply do:

let emailsAddress = users.allDocuments[0]["emails"][0][@"address"] as! String
print("emailAddress: \(emailAddress)")

But it really is better to use multiple lines. It makes the code much easier to read and debug. Also, putting all that onto one line doesn't allow any error checking. What if the @"emails" key has an empty array, for example? The code will crash.

answered Oct 31, 2015 at 19:02

rmaddy

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