I am performing the (add the contracts pallet to a runtime) substrate tutorial and I am getting this error
error[E0405]: cannot find trait Trait in crate pallet_contracts
--> runtime/src/lib.rs:279:24
|
279 | impl pallet_contracts::Trait for Runtime {
| ^^^^^ not found in pallet_contracts
can anyone tell me what should I do to solve this error
There is a Parity repository called substrate-contracts-node, it's a Substrate node configured to include pallet-contracts.
You can take a look at how the trait is implemented here: https://github.com/paritytech/substrate-contracts-node/blob/main/runtime/src/lib.rs#L272-L320.
You should implement contracts' Config, not just Trait.
Use impl pallet_contracts::Config for Runtime.
Here is my example of implementation
RentPayment is not a member of trait pallet_contracts::Config error[E0437]: type SignedClaimHandicap is not a member of trait pallet_contracts::Config ` error[E0437]: type TombstoneDeposit is not a member of trait pallet_contracts::Config and many more .
Commented
Jul 11, 2022 at 14:21
With regards to the naming of the trait,
the Trait name was used for config traits in the older version of substrate. This name has been replaced with Config.
Therefore, instead of using:
impl pallet_contracts::Trait for Runtime {
//define types here
}
you should use:
impl pallet_contracts::Config for Runtime {
//define types here
}
The errors you're getting with regards to the RentPayment and SignedClaimHandicap types are occurring because these types are non-existent. They aren't declared in the contracts pallet's Config trait (they may have been there in older versions, but have been removed).
You should use the up-to-date tutorial here
