populating JSON in tableview - json

Question

So I'm trying to populate multiple tableviews with the json code below:
{ "company":[
{ "company_id":"0",
"name": "Company Name",
"phone_number":"0123978978",
"website":"http:\/\/www.Company.co.uk\/",
"email":"Company#hotmail.co.uk",
"address":"123 Alm Street...",
"employees":[
{
"company_id": "0",
"name":"Steve",
"age":"25",
"description":"desc"},
{
"company_id": "0",
"name":"Paul",
"age":"35",
"description":"desc"}]
}
]
}
below is the model of fetching the json and formatting it into something I can use
class Company: NSObject {
var name: String
var phoneNumber: String
var website: String
var email: String
var address: String
var employees: [Employee]
override init() {
}
init(name: String, phoneNumber: String, website: String, email: String, address: String, employees: [Employee]) {
self.name = name
self.phoneNumber = phoneNumber
self.website = website
self.email = email
self.address = address
self.employees = employees
}
}
class Employee : NSObject {
var name:String
var age:Int
var information:String
override init() {
}
init(name: String, age: Int, information: String) {
self.name = name
self.age = age
self.information = information
}
}
func getJSON(completion: (array: [Company])->()) {
var companyArray = [Company]()
let requestURL: NSURL = NSURL(string: urlString)!
let urlRequest: NSMutableURLRequest = NSMutableURLRequest(URL: requestURL)
let session = NSURLSession.sharedSession()
let task = session.dataTaskWithRequest(urlRequest) {
data, response, error -> Void in
let httpResponse = response as! NSHTTPURLResponse
let statusCode = httpResponse.statusCode
if (statusCode == 200) {
print("Everything is fine, file downloaded successfully.")
do{
let json = try NSJSONSerialization.JSONObjectWithData(data!, options:.AllowFragments)
if let companies = json["companies"] as? NSArray {
for companyDict in companies {
let company = Company()
let employee = Employee()
var employeeArray = [Employee]()
if let name = companyDict["name"] as? String,
let phoneNumber = companyDict["phone_number"] as? String,
let website = companyDict["website"] as? String,
let email = companyDict["email"] as? String,
let address = companyDict["address"] as? String {
company.name = name
company.phoneNumber = phoneNumber
company.website = website
company.email = email
company.address = address
}
if let employees = companyDict["employees"] as? NSArray {
for employeesDict in employees {
if let name = employeesDict["name"] as? String,
let age = employeesDict["age"] as? Int,
let information = employeesDict["information"] as? String {
var employeeArray = [Employee]()
let employee = Employee()
employee.name = name
employee.information = information
employee.age = age
employeeArray.append(employee)
company.employees = employeeArray
}
}
}
companyArray.append(company)
}
dispatch_async(dispatch_get_main_queue()) {
completion(array: companyArray)
}
}
} catch {
print("Error with Json: \(error)")
}
}
}
task.resume()
}
This is where the problem arrises, I can populate my first tableview fine. Each cell displays the data fine. The problem occurs when I try to populate my second tableview based on selection of a cell in my first tableview.
let selectedCompany:Company?
func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return self.selectedCompany!.employees!.count //ignore force unwrap
}
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let employee = self.selectedCompany!.employees![indexPath.row] //ignore force unwrap
cell.employeeName.text = employee.name
return cell
}
The line let employee = self.selectedCompany!.employees![indexPath.row] displays a compiler error of type has no subscript members. I think I know why - I need to populate the second table view as an array. At the moment, Employee is not an array. I've tried several different methods to make it an array but I can't seem to do it. What I've tried usually returns nil and the app crashes or i get compiler errors

Answer 1

You have to declare employees in Company as array
var employees = [Employee]()
and also in the initializer
init(name ... , employees: [Employee]) {
and – very very important – you have to create the Employee instance in the repeat loop, otherwise you have employees.count times the same object (due to reference semantics of classes)
...
for employeesDict in employees {
if let name = employeesDict["name"] as? String,
let age = employeesDict["age"] as? Int,
let information = employeesDict["information"] as? String {
let employee = Employee(name:name, age:age, information:information)
employeeArray.append(employee)
}
}
}
company.employees = employeeArray
...
You have to use the initializer anyway. And you have to assign the array after the repeat loop.