unable to save the data to the json using post - swift3

Question

I m unable to save the data back to json which is written in text fields and when save button is clicked it have to save the updated data to json.
Here is the code i have written on save button action:
if let id = UserDefaults.standard.string(forKey: "NgoId"){
var request = URLRequest(url: URL(string: "http://www.shreetechnosolution.com/funded/ngo_profile.php?ngoid=\(id)")!)
request.httpMethod = "POST"
let postString = "Nameofngo=\(textngoname.text!)&NameofChiefFunctionary=\(textcheiffunction.text!)&NameofChairman=\(textchairman.text!)&NameofSeceratary=\(textsecratary.text!)&NameofTreasurer=\(texttreasurer.text!)&ParentOrganization=\(textparentorg.text!)&AboutNGO=\(Textngo.text)&photoofNGO=\(imageviewngo.image)&ngoid=\(id)&value=NGO"
request.httpBody = postString.data(using: .utf8)
let task = URLSession.shared.dataTask(with: request) { data, response, error in
guard let data = data, error == nil else { // check for fundamental networking error
print("error=\(error ?? "" as! Error)")
return
}
if let httpStatus = response as? HTTPURLResponse, httpStatus.statusCode != 200 { // check for http errors
print("statusCode should be 200, but is \(httpStatus.statusCode)")
print("response = \(String(describing: response))")
}
let json = try! JSONSerialization.jsonObject(with: data, options: []) as! NSDictionary
let msg = json.value(forKey: "message") as! NSString!
let alert : UIAlertView = UIAlertView(title: "Alert box!", message: "\(msg!).",delegate: nil, cancelButtonTitle: "OK")
alert.show()
}
task.resume()
}

Answer 1

Try following way of post data code, this will help you. And always try use try-catch to get error. Below is your working code with response.
UserDefaults.standard.setValue(1, forKey: "NgoId");
if let id = UserDefaults.standard.string(forKey: "NgoId"){
var request = URLRequest(url: URL(string: "http://www.shreetechnosolution.com/funded/ngo_profile.php?ngoid=\(id)")!)
request.httpMethod = "POST"
var postJson = Dictionary<String, Any>.init();
postJson["Nameofngo"] = "NONAME";
postJson["NameofChiefFunctionary"] = "";
postJson["NameofChairman"] = "";
postJson["NameofSeceratary"] = "";
postJson["NameofTreasurer"] = "";
postJson["ParentOrganization"] = "";
postJson["AboutNGO"] = "";
postJson["ngoid"] = id;
postJson["value"] = "NGO";
print("post json \(postJson)");
do {
let postData = try JSONSerialization.data(withJSONObject: postJson, options: JSONSerialization.WritingOptions.prettyPrinted);
request.httpBody = postData;
}catch let err {
print("exception is \(err)");
}
let task = URLSession.shared.dataTask(with: request) { data, response, error in
guard let responseData = data, error == nil else { // check for fundamental networking error
print("error=\(error ?? "" as! Error)")
return
}
if let httpStatus = response as? HTTPURLResponse, httpStatus.statusCode != 200 { // check for http errors
print("statusCode should be 200, but is \(httpStatus.statusCode)")
print("response = \(String(describing: response))")
}
let json = try! JSONSerialization.jsonObject(with: responseData, options: []) as! NSDictionary
print("json response \(json)");
}
task.resume()
}
Response In log-----
{
listngoprofile = (
{
AboutNGO = "<null>";
City = "<null>";
CityofRegisteration = "<null>";
CompleteAddress = "<null>";
Country = "<null>";
DateofRegisteration = "<null>";
Declaration = 1;
EmailID = "hgmaetrust#gmail.com";
FCRADateofRegisteration = "";
FCRARegisterationNo = "";
FCRAValidUpto = "19/07/2025";
"Fax_No" = "<null>";
Issues = (
{
Issues = "Education& Scholarship";
},
{
Issues = fdfsdfasdfdsd;
},
{
Issues = kdjkdsksd;
},
{
Issues = dfjkkdf;
}
);
Majorachievements = "<null>";
MobileNo = 9922400698;
NGOBankAccountNo = "<null>";
NGOBankAccounttype = "<null>";
NGOBankIFSCCode = "<null>";
NameinBankAccount = "<null>";
NameofChairman = "<null>";
NameofChiefFunctionary = "<null>";
NameofSeceratary = "<null>";
NameofTreasurer = "<null>";
Nameofngo = "<null>";
NgoID = 1;
ParentOrganization = "<null>";
Pincode = "<null>";
Regcertimg = "<null>";
RegisterationNo = "<null>";
Registeredwith = "<null>";
State = "<null>";
StateofRegisteration = "<null>";
"TelePhone_No" = "<null>";
TypeofNGO = "<null>";
Validupto = "<null>";
WebsiteURL = "<null>";
YearofEstablishment = "<null>";
keyOperational = (
{
Area = Maharashtra;
},
{
Area = dfsdfdfsdfsdfdsfdsfdsfds;
},
{
Area = kjdjdkjdfjl;
},
{
Area = jldklk;
}
);
photoofNGO = "<null>";
}
);
success = 1;
}
If you want to apply check for <null> values in response, then follow below code for check.
if let successVal = response?["success"] as? NSNumber {
uWillGetValueHere = successVal;
}