SWIFT: Iterate through a JSON object that's convert to a dictionary - json

Question

NOTE: Somewhat similar questions have been already asked. And yet none of them provides how to solve this seemingly simple task. So I hope it gets resolved here once and for all.
MY PROBLEM:
I am receiving this nested JSON object:
print("type(of: JSON) \( type(of: JSON))") //__NSDictionaryI
completion(true, nil, JSON as? [String: Any], nil)
Alamofire module converts it, as you see, to a Dictionary.
I have been trying for hours on end to access the nested values with different methods (Something, I thought that should be straightforward compared to JavaScript), inside this Dictionary but I couldn't find a single way that works.
So except for the high-level values, I couldn't access anything else:
for (key,movieData) in moviesData! { // moviesData is the JSON dictionary object
// Do some logic
}
So is there anyway to easily manipulate/access the received JSON data?

Answer 1

This is a far from being an ideal solution but it works. So here it is:
for (key,movieData) in moviesData! {
if let nestedDictionary = moviesData![key] as? [String: Any] {
print("nestedDictionary: ",nestedDictionary) // logs the result part of the JSON object
// Trying to access nested values
for (key,value) in nestedDictionary {
print("nestedDictionary.key: ",key)
print("nestedDictionary.type(of:value): ",type(of:value) )
print("nestedDictionary.value: ",value)
// Testing if sections is an array of dictionaries
if let arrayOfDictionaries = nestedDictionary[key] as? [[String: Any]] {
print("nestedDictionary: ",nestedDictionary) // logs the result part of the JSON object
// Trying to access array items which are sections
for item in arrayOfDictionaries {
print("arrayOfDictionaries.item: ",item)
}
}
}
}
}
It is based on the tip mentioned here:
if let dictionary = jsonWithObjectRoot as? [String: Any] {
if let number = dictionary["someKey"] as? Double {
// access individual value in dictionary
}
for (key, value) in dictionary {
// access all key / value pairs in dictionary
}
if let nestedDictionary = dictionary["anotherKey"] as? [String: Any] {
// access nested dictionary values by key
}
}
The key idea is to check if there's a nested dictionary or a nested array inside the json and then iterate accordingly.