1

I'm calling a function that will write information to contract, and MetaMask will list it as a 'Contract Deployment'. It is on the Rinkeby testnet. But if I run it locally using Truffle/Ganache, it will list it as a 'Contract Call', as opposed to a 'Contract Creation'.

Here is my code:

this.contract = new web3.eth.Contract(ABI, contractAddress)

let accounts = web3.eth.getAccounts()
... 
let contractFunctionData = this.contract.methods.contractFunction(params).encodeABI()
web3.eth.sendTransaction({ 
  from: accounts[0],
  data: contractFunctionData
}, function(err, result) {
  if(!err)
    console.log(result)
})

when it logs result it returns the address of the new contract created.

This only happens with write functions. Read functions work as expected and return the right output.

1

It looks like your code is missing a to address. If you send a transaction to address 0 (the default), it creates a new contract. Adding to: contractAddress should work.

BTW, you might also consider just letting the contract instance do the work rather than using web3.eth.sendTransaction directly:

this.contract.methods.contractFunction(params).send()

This would ensure that the right data and to address are used.

  • I changed my code according to what you suggested and it worked, with MetaMask listing it as a 'transaction' instead of a 'contract creation'! The only this is I was getting a TypeError when I tried to use .sendTransaction()', but when I tried using .send()` it worked. – JarethRader Jan 26 at 2:30
  • 1
    My mistake! Edited to have .send() instead. – user19510 Jan 26 at 3:02

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