Substrate NFT !ink smart contract base

POLK4.NET

Last update: Dec 3, 2022

Related tags

Cryptography rust crypto smart-contracts blockchain substrate polkadot

Overview

Substrate !ink NFT simple implementation

This is a simple working version of base NFT smart contract written using latest (as of this date) !ink 3.0.0-rc3.

To run all tests:

cargo +nightly test

To compile to WASM:

cargo +nightly contract build

Original wasm size: 47.4K, Optimized: 26.3K

Once your contract is compiled you can find artifacts in: <PROJECT_DIR>/target/ink

nft.contract (code + metadata)
nft.wasm (the contract's code)
metadata.json (the contract's metadata)

If you are facing any issues please follow the setup step of substrate environment at:

https://substrate.dev/substrate-contracts-workshop/#/0/setup

Testing on using Polk4 canvas network

You can upload this contract and interract with it either via your own local Canvas node or using Polk4 Canvas testnet.

Head to https://paritytech.github.io/canvas-ui/
In node settings input custom node endpoint: wss://canvas.polk4.net
Upload nft.contract into the node via UI
Instantiate a contract and make RPC calls/transactions 🎉

License

This NFT template is MIT

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Comments

error on tests

Hey, just try to make

cargo +nightly test

got error:

error[E0277]: the trait bound `ink_env::AccountId: TypeInfo` is not satisfied
   --> lib.rs:9:5
    |
9   | /     pub struct NFT {
10  | |         owner: AccountId,
11  | |         id_to_owner: ink_storage::collections::HashMap<u64, AccountId>,
12  | |         owner_to_token_count: ink_storage::collections::HashMap<AccountId, u64>,
13  | |     }
    | |_____^ the trait `TypeInfo` is not implemented for `ink_env::AccountId`
    |
note: required by a bound in `FieldsBuilder::<NamedFields>::field_of`

rustup:

Default host: x86_64-unknown-linux-gnu
rustup home:  /home/******/.rustup

installed toolchains
--------------------

stable-x86_64-unknown-linux-gnu (default)
nightly-x86_64-unknown-linux-gnu

active toolchain
----------------

stable-x86_64-unknown-linux-gnu (default)
rustc 1.57.0 (f1edd0429 2021-11-29)

opened by moneyzmey 2