How to get the value of url parameter using swift 4.1 - ios

Question

I am trying to get parameters for urls and I try to get only the date not time the URL.
http://aa.no-ip.biz:8001/hf_tracker/api/history.php?accesskey=12345&Vehilce=1618&FromDate=2018-05-10 13:11&ToDate=2018-05-14 12:11
Code:
extension URL {
func valueOf(_ queryParameterName: String) -> String? {
guard let url = URLComponents(string: self.absoluteString) else {
return nil
}
return url.queryItems?.first(where: { $0.name == queryParameterName})?.value
}
}
let newURL = URL(string: "assetlinkasia.no-ip.biz:8001/hf_tracker/api/…)!
newURL.valueOf("toDate")
newURL.valueOf("fromDate")
How can I only get the date and not time?

Answer 1

This is the way you can do it,
Your URL extension here, from here
extension URL {
func valueOf(_ queryParamaterName: String) -> String? {
guard let url = URLComponents(string: self.absoluteString) else { return nil }
return url.queryItems?.first(where: { $0.name == queryParamaterName })?.value
}
}
Your code goes here,
let string = "http://aa.no-ip.biz:8001/hf_tracker/api/history.php?accesskey=12345&Vehilce=1618&FromDate=2018-05-10 13:11&ToDate=2018-05-14 12:11"
let test = string.addingPercentEncoding(withAllowedCharacters: .urlQueryAllowed)
let url = URL(string: test!)!
let fromDate = url.valueOf("FromDate")
let toDate = url.valueOf("ToDate")
let date1 = fromDate?.components(separatedBy: " ").first
print(date1)
let date2 = toDate?.components(separatedBy: " ").first
print(date2 )
Output will be below,
2018-05-10
2018-05-14

Answer 2

In my apps a use a helper function that parses the url and returns an optional dictionary:
func parameters(for url: URL) -> [String: String]? {
guard let urlQuery = url.query else { return nil }
// Create all parameters dictionary
let queryArray = urlQuery.split { $0 == "&" }.map(String.init)
var parametersDict: [String: String] = [:]
for queryParameter in queryArray {
// split the queryParam into key / value
let keyValueArray = queryParameter.split{ $0 == "=" }.map(String.init)
let key = keyValueArray.first!
let value = keyValueArray.last!.removingPercentEncoding!
parametersDict.updateValue(value, forKey: key)
}
return parametersDict
}
And use it like this:
let params = parameters(for: URL(string: "https://someurl.com?name=john")!)
if let name = params?["name"] {
print(name)
}
Or you can add a var to URL extension:
extension URL {
var parameters: [String: String]? {
guard let urlQuery = self.query else { return nil }
// Create all parameters dictionary
let queryArray = urlQuery.split { $0 == "&" }.map(String.init)
var parametersDict: [String: String] = [:]
for queryParameter in queryArray {
// split the queryParam into key / value
let keyValueArray = queryParameter.split{ $0 == "=" }.map(String.init)
let key = keyValueArray.first!
let value = keyValueArray.last!.removingPercentEncoding!
parametersDict.updateValue(value, forKey: key)
}
return parametersDict
}
}
And get the parameter:
let params = URL(string: "https://someurl.com?name=john")!.parameters
if let name = params?["name"] {
print(name)
}