I have an instance of a Gizmo contract created by a Factory but I can't hook into it from JS.

> gizmoInst = web3.eth.contract(gizmoABI).at(gizmoAddr)
Error: INVALID_PARAMS: Invalid method parameters (invalid name and/or type) recognised

Any clues?

  • I can't connect to any contracts using the web3.eth.contract methods.
    – o0ragman0o
    May 18 '16 at 4:57
  • did you deploy it on test or private network and try to access it on main, sorry to ask this dumb question but it happened to me once ;)
    – euri10
    May 18 '16 at 6:37
  • I'm trying this in Mix console so it's just Mix's sealed blocks. I haven't deployed anything to the chains yet because I can't get past this issue.
    – o0ragman0o
    May 18 '16 at 7:06

The error was that I was passing a stringified ABI to web3.eth.contract(ABI) and not an array object.


if you're using Mix the access to the contract is just done using contracts["contractName"] . if you follow the tutorial here, they write a contract called Rating. the way to access it in the javascript code is the following :

var res = contracts["Rating"].contract.ratings(param);

Si I'd try to access it through contracts["Gizmo"] or whatever name you called it.

  • The problem is that Gizmo is dynamically created by a Factory contract and so doesn't exist in the contracts[] object.
    – o0ragman0o
    May 18 '16 at 7:37
  • did you have successfully mined it after creation ?
    – euri10
    May 18 '16 at 7:43
  • yes and the Factory contract can see it fine and read it's publics
    – o0ragman0o
    May 18 '16 at 8:59

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