如何从另一个托盘访问托盘中的存储和功能？

如何解决如何从另一个托盘访问托盘中的存储和功能？

我有一个通用托盘，供其他托盘使用。例如，下面是常见的共享托盘：

#![cfg_attr(not(feature = "std"),no_std)]

#[cfg(test)]
mod tests;

pub trait Trait: system::Trait {
    type Event: From<Event<Self>> + Into<<Self as system::Trait>::Event>;
    type Currency: Currency<Self::AccountId> + ReservableCurrency<Self::AccountId>;
}

type AccountIdOf<T> = <T as system::Trait>::AccountId;
type BalanceOf<T> = <<T as Trait>::Currency as Currency<AccountIdOf<T>>>::Balance;
type StructInfoOf<T> = StructInfo<AccountIdOf<T>,<T as system::Trait>::BlockNumber>;

#[derive(Encode,Decode,Default,PartialEq,Eq)]
#[cfg_attr(feature = "std",derive(Debug))]
pub struct StructInfo<AccountId,BlockNumber> {
    name: Vec<u8>,owner: AccountId,created: BlockNumber,}

decl_storage! {
    trait Store for Module<T: Trait> as TokenStore {

    pub Data get(fn data): map hasher(blake2_128_concat) u32 => Option<StructInfoOf<T>>;
    pub DataCount get(fn data_count): u32;


    }
}

decl_event!(
    pub enum Event<T>
    where
        AccountId = <T as system::Trait>::AccountId,Balance = BalanceOf<T>,{
        /// Test event
        TestEvent(u32,Balance,AccountId),}
);

decl_error! {
    pub enum Error for Module<T: Trait> {
        TestError
    }
}

decl_module! {
    pub struct Module<T: Trait> for enum Call where origin: T::Origin {
        fn deposit_event() = default;


        #[weight = 10_000]
        pub fn test_dispatch_call(origin) -> dispatchResult {
            let caller = ensure_signed(origin)?;
            Ok(())
        }   
        
    }
}

impl<T: Trait> Module<T> {


    pub fn public_function(value: u32) -> BalanceOf<T>  {
        let value: u32 = 0;
        Self::data_count()
    }
}

但我不确定如何从公共模块调用 Data、DataCount、test_dispatch_call、public_function。

解决方法

在 [dependencies] 中添加 Cargo.toml 中需要的托盘，如 pallet-test = {default-features = false,path ='../test'} 和 [features] [std] 中，如 'pallet-test/std'

在当前托盘中：在 pub trait Trait (v2) 或 pub trait Config(v3) 中添加 pallet-test 像 {{1 }}

访问函数：pub trait Config: frame_system::Config + pallet_test::Config{};