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I have a substrate pallet A and it has following Errors Defined

    #[pallet::error]
    pub enum Error<T> {
        /// Not a coffee
        InvalidCoffee,
    }

trait implementation in Pallet A

pub trait A<AccountId, Error> {
 

    fn is_valid_coffee(coffee_id: u32) -> Result<bool, Error>;
}

impl<T: Config> A<AccountIdOf<T>, Error<T>> for Pallet<T> {
     

     
    fn is_valid_coffee(coffee_id: u32) -> Result<bool, Error<T>> {
        Coffee::<T>::get(coffee_id).ok_or(Error::<T>::InvalidCoffee)
    }
}

I am using a trait defined in this Pallet A (is_valid_coffee) in pallet B, it requires the Error defined in Pallet A. How to import it to Pallet B?

1 Answer 1

4
trait Config: frame_system::Config + another_pallet::Config {}

fn example<T>() -> DispatchError 
where
    T: Config
{
    Err(<another_pallet::Error<T>>::AnotherError)
}

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