xjohnwu / near-marketplace-contract

near-marketplace-contract

Learning Points

1. There are two types of function calls, view and change. Calls that are view will only read data from the blockchain, while calls that are change will write data to the blockchain and modify its state. Calls that are view are free, while we need to pay gas for change calls.

2. We will create one account that we will use to interact with the smart contract, and another account that we will deploy the smart contract to. The second account will be a subaccount of the first account, and will look like a subdomain.

3. https://dacade.org/communities/near/courses/near-101/learning-modules/b52ba9f1-caac-4339-96ed-fad3b1ab6bbd Commands

   near login
   
   near create-account ${SUBACCOUNT_ID}.${ACCOUNT_ID} --masterAccount ${ACCOUNT_ID} --initialBalance ${INITIAL_BALANCE}
   
   yarn asb  # compile
   
   near deploy --accountId=${ACCOUNT_ID} --wasmFile=${PATH_TO_WASM}  # ACCOUNT_ID=account for deployment, which is a subaccount.
   
   near call ${CONTRACT_ACCOUNT_ID} ${METHOD_NAME} ${PAYLOAD} --accountId=${ACCOUNT_ID}
   
   near view ${CONTRACT_ACCOUNT_ID} ${METHOD_NAME} ${PAYLOAD}
   
   near call mycontract.myaccount.testnet buyProduct '{"productId": "0"}' --depositYocto=1000000000000000000000000 --accountId=buyeraccount.myaccount.testnet

Barriers

1. Unsupported platform whilst "yarn add -D near-sdk-as" https://docs.near.org/docs/faq/developer-faq#near-sdk-as

2. sudo yarn add global near-cli will NOT make "near" work.

   sudo npm i -g near-cli will make "near" work