# JSON Encoding / Decoding weird encoding of dictionary with enum values

**URL:** <https://forums.swift.org/t/json-encoding-decoding-weird-encoding-of-dictionary-with-enum-values/12995>\
**Category:** Using Swift\
**Tags:** codable, json\
**Created:** [May 26, 2018, 10:54pm UTC](https://forums.swift.org/t/json-encoding-decoding-weird-encoding-of-dictionary-with-enum-values/12995 "2018-05-26T22:54:33Z")\
**Posts on this page:** 1\
**Showing post:** 5

<div class="post-metadata">

**Author:** ![zarghol](https://avatars.discourse-cdn.com/v4/letter/z/7c8e57/32.png) [@zarghol](https://forums.swift.org/u/zarghol)\
**Post date:** [May 27, 2018, 12:35am UTC](https://forums.swift.org/t/json-encoding-decoding-weird-encoding-of-dictionary-with-enum-values/12995/5 "2018-05-27T00:35:19Z")

</div>

Okay ! I already added a workaround by implementing the method in `BuildingTemplate2`, but since it has more than one property, It is a lot of code just for this...

```swift
struct BuildingTemplate: Encodable {
    let name: String
    let description: String
    
    let maxLife: Double
    let characteristics: [Characteristic: Double]
    let requiredToBuild: [Resource: Int]
    
    let skillsIds: [SkillId]
}

extension BuildingTemplate: Template {
    init(from decoder: Decoder) throws {
        let container = try decoder.container(keyedBy: BuildingTemplate.CodingKeys.self)
        
        self.name = try container.decode(String.self, forKey: .name)
        self.description = try container.decode(String.self, forKey: .description)
        self.maxLife = try container.decode(Double.self, forKey: .maxLife)
        let characteristicsDictionary = try container.decode([String: Double].self, forKey: .characteristics)
        self.characteristics = try characteristicsDictionary.map { tuple in
            guard let key = Characteristic(rawValue: tuple.key) else {
                throw DecodingError.valueNotFound(
                    Characteristic.self,
                    DecodingError.Context(codingPath: [BuildingTemplate.CodingKeys.characteristics], debugDescription: "unable to build an enum value with value provided : \(tuple.key)")
                )
            }
            return (key, tuple.value)
        }
        let requiredToBuildDictionary = try container.decode([String: Int].self, forKey: .requiredToBuild)
        self.requiredToBuild = try requiredToBuildDictionary.map { tuple in
            guard let key = Resource(rawValue: tuple.key) else {
                throw DecodingError.valueNotFound(
                    Resource.self,
                    DecodingError.Context(codingPath: [BuildingTemplate.CodingKeys.requiredToBuild], debugDescription: "unable to build an enum value with value provided : \(tuple.key)")
                )
            }
            return (key, tuple.value)
        }
        self.skillsIds = try container.decode([SkillId].self, forKey: .skillsIds)
    }
}

```

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