POST json object in a form variable on a sever - php

Question

hello I am working on IOS SWIFT 2. I NEED to send the json object in a variable so that I can access the json object like that
$json = $_POST['json'];
$data = json_decode($json, TRUE);
$email = $data['email'];
$user_password = $data['password'];
right now the data is posting on server like this
{
"email" : "email",
"password" : "password"
}
This is the code I am using
func post() {
let url:String = "http://example.com/test.php"
let request = NSMutableURLRequest(URL: NSURL(string: url)!)
let params = ["email":"email", "password":"password"] as Dictionary<String, String>
//let request = NSMutableURLRequest(URL:url)
let session = NSURLSession.sharedSession()
request.HTTPMethod = "POST"
do {
let data = try NSJSONSerialization.dataWithJSONObject(params, options: .PrettyPrinted)
let dataString = NSString(data: data, encoding: NSUTF8StringEncoding)!
print("dataString is \(dataString)")
request.HTTPBody = try NSJSONSerialization.dataWithJSONObject(params, options: .PrettyPrinted)
} catch {
//handle error. Probably return or mark function as throws
print(error)
return
}
request.addValue("application/json", forHTTPHeaderField: "Content-Type")
request.addValue("application/json", forHTTPHeaderField: "Accept")
let task = session.dataTaskWithRequest(request, completionHandler: {data, response, error -> Void in
// handle error
guard error == nil else { return }
print("Response: \(response)")
let strData = NSString(data: data!, encoding: NSUTF8StringEncoding)
print("Body: \(strData)")
let json: NSDictionary?
do {
json = try NSJSONSerialization.JSONObjectWithData(data!, options: .MutableLeaves) as? NSDictionary
} catch let dataError {
// Did the JSONObjectWithData constructor return an error? If so, log the error to the console
print(dataError)
let jsonStr = NSString(data: data!, encoding: NSUTF8StringEncoding)
print("Error could not parse JSON: '\(jsonStr)'")
// return or throw?
return
}
// The JSONObjectWithData constructor didn't return an error. But, we should still
// check and make sure that json has a value using optional binding.
if let parseJSON = json {
// Okay, the parsedJSON is here, let's get the value for 'success' out of it
let success = parseJSON["success"] as? Int
print("Succes: \(success)")
}
else {
// Woa, okay the json object was nil, something went worng. Maybe the server isn't running?
let jsonStr = NSString(data: data!, encoding: NSUTF8StringEncoding)
print("Error could not parse JSON: \(jsonStr)")
}
})
task.resume()
}
I want to pass the json above in a form variable called 'json'.

Answer 1

I would highly recommend using a Library, such as Alamofire to handle this.
Doing it yourself is tedious.
Once added to your Swift Project, you can send JSON parameters really, really elegantly:
Example from the Github page:
let parameters = [
"foo": [1,2,3],
"bar": [
"baz": "qux"
]
]
Alamofire.request(.POST, "https://httpbin.org/post", parameters: parameters, encoding: .JSON)
Then you can use your existing PHP code to process your JSON.
Edit:
Also handling JSON is really elegant too:
Alamofire.request(.POST, url, etc).responseJSON { response in
print(response.request) // original URL request
print(response.response) // URL response
print(response.data) // server data
print(response.result) // result of response serialization
if let JSON = response.result.value {
print("JSON: \(JSON)")
}
}