UserTopicPivot

UserTopicPivot.swift

struct UserTopicPivot: SQLitePivot {
    var id: Int?
    var userID: Int
    var topicID: Int
    
    typealias Left = User
    typealias Right = Topic
    static let leftIDKey: LeftIDKey = \.userID
    static let rightIDKey: RightIDKey = \.topicID
}
extension UserTopicPivot: Migration {
    static func prepare(on connection: SQLiteConnection) -> Future<Void>{
        return Database.create(self, on: connection, closure: { (builder) in
            try addProperties(to: builder)
            builder.reference(from: \.userID, to: \User.id)
            builder.reference(from: \.topicID, to: \Topic.id)
        })
    }
}