User
    name Text
    email Text
    password Text
    salt ByteString
    salted ByteString Maybe
    albums [AlbumId]
    deriving Typeable
Activator
    token Text
    user User
    deriving
Token
    token ByteString
    kind Text
    user UserId Maybe
    deriving
Album
    title Text
    owner UserId
    content [MediumId]
    samplePic MediumId Maybe
    deriving
Medium
    title Text
    path FilePath
    time UTCTime
    owner UserId
    description Textarea
    tags Texts
    album AlbumId
    deriving

 -- By default this file is used in Model.hs (which is imported by Foundation.hs)