contract-advanced-rs

Complex Cross-Contract Calls Examples

This contract presents 3 examples on how to do complex cross-contract calls. Particularly, it shows:

1. How to batch method calls to a same contract.
2. How to call multiple contracts in parallel, each returning a different type.
3. Different ways of handling the responses in the callback.

How to Build Locally?

Install cargo-near and run:

cargo near build

How to Test Locally?

cargo test

How to Deploy?

To deploy manually, install cargo-near and run:

# Create a new account
cargo near create-dev-account

# Deploy the contract on it
cargo near deploy <account-id>

CLI: Interacting with the Contract

To interact with the contract through the console, you can use the following commands

# Replace <your-account.testnet> with your account ID
# Call batch_actions method
near call <your-account.testnet> batch_actions --gas 300000000000000 --accountId <your-account.testnet>

# Call multiple_contracts method
near call <your-account.testnet> multiple_contracts --gas 300000000000000 --accountId <your-account.testnet>

# Call similar_contracts method
near call <your-account.testnet> similar_contracts --gas 300000000000000 --accountId <your-account.testnet>

Useful Links

• cargo-near - NEAR smart contract development toolkit for Rust
• near CLI - Interact with NEAR blockchain from command line
• NEAR Rust SDK Documentation
• NEAR Documentation
• NEAR StackOverflow
• NEAR Discord
• NEAR Telegram Developers Community Group
• NEAR DevHub: Telegram, Twitter