Swift 4 Codable array with dictionary has value of String and Array - ios

Question

struct ProductDetails:Codable {
var custom_attributes:[CustomAttributesData]
struct CustomAttributesData:Codable {
var attribute_code:String
var value:String
}
}
I have an Array of custom_attributes has dictionary with elements of attribute_code as String & value as String, but some value datatype's are in Array, due to Array I am not able to parse using codable, help me out, Thanks in advance
"custom_attributes": [
{
"attribute_code": "image",
"value": "/6/_/6.jpg"
},
{
"attribute_code": "small_image",
"value": "/6/_/6.jpg"
}
{
"attribute_code": "news_to_date",
"value": "2017-09-30 00:00:00"
},
{
"attribute_code": "category_ids",
"value": [
"2",
"120"
]
},
{
"attribute_code": "options_container",
"value": "container2"
}
]
I have added json above.

Answer 1

You have to add a custom initializer which distinguishes between String and [String].
This code declares value as [String] and converts a single string to an array
struct ProductDetails : Decodable {
let custom_attributes : [CustomAttributesData]
struct CustomAttributesData : Decodable {
private enum CodingKeys : String, CodingKey {
case attributeCode = "attribute_code", value
}
let attributeCode : String
let value : [String]
init(from decoder: Decoder) throws {
let container = try decoder.container(keyedBy: CodingKeys.self)
attributeCode = try container.decode(String.self, forKey: .attributeCode)
do {
let string = try container.decode(String.self, forKey: .value)
value = [string]
} catch DecodingError.typeMismatch {
value = try container.decode([String].self, forKey: .value)
}
}
}
}
Alternatively you could use two separate properties stringValue and arrayValue