How to stake asset instead of currency?

Question

I would like to customize POS by staking the asset balance instead of currency balance. After switching the consensus from PoA to PoS by changing AURA to BABE, I need to change the configuration of pallet_staking. there are 2 fields in pallet_staking::Config need to be defined

impl pallet_staking::Config for Runtime {
    type Currency = Balances;// -> pallet_pts::Config::Kitty;
    type CurrencyBalance = (); -> pallet_potw::Kitty::Balance;
}

Kitty is defined in runtime : type Kitty = Assets; and type KittyBalance = AssetBalance; However the trait of Currency and Asset is different, what should I do to able use this asset for staking?

Answer 1

In pallet-staking you can see that type Currency has to implement the LockableCurrency trait which is implemented for pallet-balances.

Unfortunately this isn't implemented for pallet-assets. You could make your own pallet-lockable-assets by implementing the trait (if that is possible, didn't check) and use that for your Kitty pallet.