NeverNull

[ghost]

I defined entity with unique key, autokey disabled. Compiling with ghc-8.6.
Class ‘NeverNull’ does not have a method ‘toPrimitivePersistValue’ (‘fromPrimitivePersistValue’)

[lykahb]

Can you share the definitions?

[ghost]

definitions:

• entity: EncryptKey
  autoKey: null
  keys:
  • name: UserId
    default: true
    constructors:
  • name: EncryptKey
    uniques:
    • name: UserId
      type: primary
      fields: [_userId]

[ghost]

and second definition:
definitions:

• entity: User
  dbName: bs_user_20180814
  autoKey: null
  keys:
  • name: PrimaryUser_20180814
    default: true
    constructors:
  • name: User
    uniques:
    • name: PrimaryUser_20180814
      type: primary
      fields: [userKey]
    • name: user_uk_20180814
      type: constraint
      fields: [userKey]

[lykahb]

Can you share the datatype definitions too? A gist that produces that error would be helpful.

[emmanueldenloye]

I am also seeing this error with ghc 8.6. The definition that fails is this (I've also attached the exact error message)

  - entity: BakerDetails
    autoKey: null
    keys:
     - name: BakerDetailsKey
       default: true
    constructors:
     - name: BakerDetails
       uniques:
        - name: BakerDetailsKey
          type: primary
          fields: [_bakerDetails_publicKeyHash]

Error message

backend/src/Backend/Schema.hs:714:1: error:
    • Class ‘NeverNull’ does not have a method ‘toPrimitivePersistValue’
    • In the instance declaration for
        ‘NeverNull (Key BakerDetails (Unique BakerDetailsKey))’

[emmanueldenloye]

I'll also include the datatype definitions as well.

data BakerDetails = BakerDetails
  { _bakerDetails_publicKeyHash :: !PublicKeyHash
  -- Used to say what block we examined for delegate info, and also for missed baking and endorsing. It would be the same thing per worker
  , _bakerDetails_branch :: !VeryBlockLike
  , _bakerDetails_delegateInfo :: !(Maybe (Json CacheDelegateInfo))
  } deriving (Eq, Ord, Show, Generic, Typeable)
instance HasId BakerDetails where
  type IdData BakerDetails = PublicKeyHash

There are obviously more datatypes but I suspect that we can just go one level deep.

[emmanueldenloye]

I've found the source of my error. I had mistakenly thought that the version of this codebase I was using was from this repo. It is from another and I found the source of the error I'm pretty sure.