Transfer - tx
Transfer πrc20 token
Example of Fixes Inscription data string:
op=transfer,tick=fixes,amt=100000.0,to=0xd2abb5dbf5e08666
Transaction parameters:
Key
Required
FType
Description
tick
t.String
Ticker: identity of the πrc20 token
amt
t.UFix64
Amount to transfer: States the amount of the πrc20 to transfer.
to
t.Address
The recipient of πrc20 tokens.
Transaction code example:
import txTransferFRC20 from "@fixes/contracts/transactions/transfer-frc20.cdc?raw";
async function transferFRC20(
tick: string,
to: string,
amt: number
) {
const txid = await flow.sendTransaction(txTransferFRC20, (arg, t) => [
arg(tick, t.String),
arg(amt.toFixed(8), t.UFix64),
arg(to, t.Address),
]);
return txid;
}
Transaction source code
https://github.com/fixes-world/fixes/blob/main/cadence/transactions/transfer-frc20.cdc
import "FungibleToken"
import "FlowToken"
import "Fixes"
import "FRC20Indexer"
import "FixesInscriptionFactory"
transaction(
tick: String,
amt: UFix64,
to: Address,
) {
let ins: auth(Fixes.Extractable) &Fixes.Inscription
prepare(acct: auth(Storage, Capabilities) &Account) {
/** ------------- Prepare the Inscription Store - Start ---------------- */
let storePath = Fixes.getFixesStoreStoragePath()
if acct.storage
.borrow<auth(Fixes.Manage) &Fixes.InscriptionsStore>(from: storePath) == nil {
acct.storage.save(<- Fixes.createInscriptionsStore(), to: storePath)
}
let store = acct.storage
.borrow<auth(Fixes.Manage) &Fixes.InscriptionsStore>(from: storePath)
?? panic("Could not borrow a reference to the Inscriptions Store!")
/** ------------- End -------------------------------------------------- */
// The Inscription's metadata
let dataStr = FixesInscriptionFactory.buildTransferFRC20(tick: tick, to: to, amt: amt)
// estimate the required storage
let estimatedReqValue = FixesInscriptionFactory.estimateFrc20InsribeCost(dataStr)
// Get a reference to the signer's stored vault
let vaultRef = acct.storage
.borrow<auth(FungibleToken.Withdraw) &FlowToken.Vault>(from: /storage/flowTokenVault)
?? panic("Could not borrow reference to the owner's Vault!")
// Withdraw tokens from the signer's stored vault
let flowToReserve <- vaultRef.withdraw(amount: estimatedReqValue)
// Create the Inscription first
let newInsId = FixesInscriptionFactory.createAndStoreFrc20Inscription(
dataStr,
<- (flowToReserve as! @FlowToken.Vault),
store
)
// borrow a reference to the new Inscription
self.ins = store.borrowInscriptionWritableRef(newInsId)
?? panic("Could not borrow reference to the new Inscription!")
}
execute {
let indexer = FRC20Indexer.getIndexer()
indexer.transfer(ins: self.ins)
}
}
Related docs
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