How to search a JSON API and decode an array using AlamoFire - swift

Question

I am searching a JSON API and I need to decode an array inside of it. I am using AlamoFire. Example: When I type in the letter "F" I want only the "F" word to display. I would like to search only in the array "name". Any help on this would be greatly appreciated!
This is my code below:
func searchBar(_ searchBar: UISearchBar, textDidChange searchText: String) {
let url = "http://dummy.com/url"
Alamofire.request(url).responseData { (dataResponse) in
if let err = dataResponse.error {
print("Failed to contact", err)
return
}
guard let data = dataResponse.data else { return }
let dummyString = String(data: data, encoding: .utf8)
print(dummyString ?? "")
do {
let searchResult = try JSONDecoder().decode(SearchResults.self, from: data)
print("Result Count:", searchResult.id)
} catch let decodeError {
print("Failed to decode:", decodeError)
}
}
}
struct SearchResults: Decodable {
let id: String
}
My API array looks like this:
{
resultId: "1",
name: "Food",
},
{
resultId: "2",
name: "Movies",
}

Answer 1

Your result is in array format so you need to put your model like this:
let searchResult = try JSONDecoder().decode([SearchResults].self, from: data)
And for search, you can apply filters:
let filteredArray = searchResult.filter( { $0.name.contains("f") } )

Answer 2

As you said, your response is:
[
{ resultId: "1", name: "Food" },
{ resultId: "2", name: "Movies"}
]
So, your struct would be,
struct SearchResults: Decodable {
let resultId: String
let name: String
}
And you will use it as:
do {
let resultArray = try JSONDecoder().decode([SearchResults].self, from: data)
print("Result Count:", searchResult.id)
} catch let decodeError {
print("Failed to decode:", decodeError)
}
For searching, you should use filter, as:
let searchString = "F"
let filteredArray = resultArray.filter( { String($0.name.first!) == searchString } )
For matching first character = String($0.name.first!) == searchText
Check if name has search Text = $0.name.contains(searchText)
In total:
do {
let searchResult = try JSONDecoder().decode([SearchResults].self, from: data)
let filteredArray = resultArray.filter( { $0.name.contains(searchText) } )
} catch let decodeError {
print("Failed to decode:", decodeError)
}