useScaffoldEventHistory

Use this hook to retrieve historical event logs for your smart contract, providing past activity data, with the option to watch for new events.

const {
  data: events,
  isLoading: isLoadingEvents,
  error: errorReadingEvents,
} = useScaffoldEventHistory({
  contractName: "YourContract",
  eventName: "GreetingChange",
  fromBlock: 31231n,
  watch: true,
  filters: { premium: true },
  blockData: true,
  transactionData: true,
  receiptData: true,
});

This example retrieves the historical event logs for the GreetingChange event of the YourContract smart contract, starting from block number 31231 and filtering events where the premium parameter is true.

Configuration

Parameter	Type	Description
contractName	string	Name of the contract to read from.
eventName	string	Name of the event to read.
fromBlock	bigint	Block number from which to start reading events.
filters (optional)	object	Apply filters to the event based on parameter names and values { [parameterName]: value }.
blockData (optional)	boolean	If set to true it will return the block data for each event (default: false).
transactionData (optional)	boolean	If set to true it will return the transaction data for each event (default: false).
receiptData (optional)	boolean	If set to true it will return the receipt data for each event (default: false).
watch (optional)	boolean	If set to true, the events will be refetched every pollingInterval set at scaffold.config.ts. (default: false).
enabled (optional)	boolean	If set to false, the hook will not fetch any data (default: true).

Return Values

• data property of the returned object contains an array of event objects, each containing the event parameters and (optionally) the block, transaction, and receipt data.
• isLoading property indicates whether the event logs are currently being fetched.
• error property contains any error that occurred during the fetching process (if applicable).