Out of gas

Error (in browser):

VM Exception while processing transaction: out of gas

Contract:

pragma solidity ^0.4.6;

contract OpenCredentials {

    struct Certificate {
        address issuer;
        address candidate;
        string data;
    }

    struct Account {
        string public_key;
        Certificate[] certificates;
    }

    mapping (address => Account) public accounts;

    function register(string _pk) {
        accounts[msg.sender].public_key = _pk;
    }

    function assert(address _candidate, string _data) {
        accounts[_candidate].certificates.push(Certificate(msg.sender, _candidate, _data));
    }

    function isRegistered(address _address) public constant returns(bool) {
        return bytes(accounts[_address].public_key).length != 0;
    }

    function getCertificatesCount() public constant returns(uint) {
        if(!isRegistered(msg.sender)){
            return 0;
        }
        return accounts[msg.sender].certificates.length;
    }
}

contracts.json:

{
  "default": {
    "gas": "auto",
    "contracts": {
    }
  }
}

genesis.json:

{
  "nonce": "0x0000000000000042",
  "difficulty": "0x0",
  "alloc": {
    "0x7090981e522b810635e5147236f5eb20b6f3bfb2": {"balance": "15000000000000000000"}
  },
  "mixhash": "0x0000000000000000000000000000000000000000000000000000000000000000",
  "coinbase": "0x7090981e522b810635e5147236f5eb20b6f3bfb2",
  "timestamp": "0x00",
  "parentHash": "0x0000000000000000000000000000000000000000000000000000000000000000",
  "extraData": "0x",
  "gasLimit": "0x4c4b40"
}

app.js:

$('#create').on('click', function(){
		OpenCredentials.assert(account.address, "Test message")
			.then(function(code){
				console.info("Successfully awarded certification!");
			})
			.catch(function(error){
				console.error(error.message);
			});
	});

Amount of ether in coinbase:

web3.fromWei(web3.eth.getBalance(web3.eth.coinbase), "ether").toNumber(); //99.9999999999994

Literally cannot understand why the hell i’m getting this error. I’ve searched the web for several hours but still no solution.

[iurimatias]

There seems to be an issue with the ‘auto’ feature as it seems to max at 700.000 gas, a fix should be coming soon. If this happens, it’s necessary to manually set the gas value to a higher value. note that you can change the gas for a specific contract with:

  {
  "default": {
    "gas": "auto",
    "contracts": {
       "OpenCredentials": {
          "gas": 900000
       }
    }
  }
}

[iurimatias]

@vincentracine the config on contracts.json only affects the contract creation, not calling individual methods. for the later it’s often needed to specify the gas value if the methods are too heavy (this is a very common issue when interacting with contracts). To specify it’s something like Contract.method(arg1, arg2, {gas: 500000})