Create Contract
There are a couple ways to get you started.
Swanky Phala
GitHub
Go to your development workspace and initialize a new project. For this tutorial, we will name the project
Norwhich
and choose the phat_hello
template.swanky phala init Norwhich
Here is a video example of the creating the new project called
Norwhich
.swanky phala init
Next,
cd
into the Norwhich
directory and compile the phat_hello
Phat Contract that was generated with the following command:swanky phala contract compile -c phat_hello
Here is a short clip of compiling the
phat_hello
contract.swanky phala contract compile
In order to initialize a new Phat Contract project you can use our hello world template:
git clone https://github.com/Phala-Network/phat-hello
Contract ExamplesMore Phat contract examples can be found in phat-contract-examples and awesome-phat-contracts repositories.
This will create a folder
phat-hello
in your work directory. The folder contains a scaffold Cargo.toml
and a lib.rs
, which both contain the necessary building blocks for using Phat Contract.The
lib.rs
contains our hello world contract ‒ an ETH balance reader.In order to build the contract just execute this command in the
phat-hello
folder:cargo contract build
As a result, you’ll get the following files in the
target/ink
folder of your contract: phat_hello.wasm
, metadata.json
, and phat_hello.contract
. The .contract
file combines the WASM and metadata into one file and needs to be used when instantiating the contract.Before you really upload and deploy your contract to the blockchain, you are encouraged to run local unit tests to check its correctness.
In the
phat-hello
folder, runcargo test -- --nocapture
and ensure you see all tests passed.
Do not usecargo contract test
here,cargo test
will give you more details if something goes wrong.-- --nocapture
is optional to see the output during testing.
Now you have successfully compiled and locally test your first Phat Contract. Now it’s time to deploy it to a real blockchain.
Last modified 3mo ago