Questions tagged [truffle-contract]
The truffle-contract tag has no usage guidance.
1
vote
0answers
8 views
During gas-free transaction get an error “No relay responded! 4 attempted, 4 pinged”
I did all modification related to this instruction https://github.com/tabookey/tabookey-gasless
However, when I'm trying to write some tests
it fails and provides me the following error
Error:...
0
votes
0answers
6 views
DeclarationError: Identifier not found or not unique and Undeclared identifier
I am trying to create a crowdsale contract using zeppelin. But i am facing following errors.
CrowdSale.sol:6:46: DeclarationError: Identifier not found or not unique.
contract EdCoinCrowdSale is ...
0
votes
0answers
27 views
How to send a value from interface to smart contract function
I have the below contract to create document details:
pragma solidity ^0.5.0;
contract Documents {
struct Document
{
uint256 creationDate;
uint32 documentCreationTimestamp;
...
-1
votes
0answers
28 views
Smart contract truffle test fail - no events were emmitted
Here's my smart contract:
pragma solidity 0.5.0;
// Basic app of how to store and retrieve a document id for IPFS stored on Ethereum network
contract BasaltStore {
// struct of how a document ...
0
votes
1answer
18 views
Truffle contract.deployed does not get the latest instance deployed
I am developing a back-end DApp using truffle and nodejs on a private network. My application call Contract.deployed() and print the address of the obtained Contract. When I call truffle migrate --...
1
vote
2answers
26 views
How use Truffle Framework [closed]
Anyone please help me to understand what is exactly Truffle & Ganache ?
How to install & use Truffle ?
Please reply who are know this.
0
votes
0answers
13 views
truffle migrate --network ropsten issues
When i run truffle migrate --network ropsten i don't see the contract deployment but just
Compiling your contracts...
===========================
> Everything is up to date, there is nothing to ...
1
vote
3answers
21 views
Issue deploying this contract
This is a contract im trying to deploy and i think its an abstract contract as most of the functions dont seem to be implemented... anyway the issue im facing is that truffle is telling me i cant ...
0
votes
0answers
31 views
I am working on a smart contract. I am getting the following error while running the smart contract in the browser console
Uncaught (in promise) ReferenceError: TruffleContract is not defined
at Object.loadContract (app.js:55)
at async Object.load (app.js:8)
here is my code of app.js file
App = {
...
0
votes
1answer
105 views
TypeError: Data location must be “memory” for parameter in function, but none was given
Contract fail to compile in IDE Remix.due to the following error:
TypeError: Data location must be "storage" or "memory" for parameter
in function, but none was given.
version:0.5.6+commit....
0
votes
2answers
25 views
Getting error in truffle migrate
I am trying to compile a sample solidity contract,sampleapp.sol. The code is given below:
pragma solidity >=0.4.21 <0.6.0;
contract SimpleStorage {
uint storedData;
function set(uint ...
0
votes
1answer
15 views
Cannot retrieve data from smartcontract during tests
I am writing truffle tests for my smart contract solidity version 0.4.24. The tests are emitting events to write data to memory through smart contract. But I am unable to retrieve data from functions.
...
0
votes
1answer
53 views
Invalid type for argument in function call. Invalid implicit conversion from mapping
I have defined struct for saving data to ethereum blockchain. I am using uint to map the data stored with a unique ID. I am using truffle framework to write smart contracts with solidity version: 0.4....
0
votes
2answers
256 views
Truffle compile and migrate not working
I have a geth node running on my laptop. This is the command I used to start geth.
geth --port 4321 --networkid 1234 --datadir=./dataDir --rpc --rpcport 8543 --rpcaddr 127.0.0.1 --rpcapi "eth,net,...
0
votes
0answers
101 views
Truffle: Error: Could not find a compiler version matching 0.5.0
I wonder why I get the error when I have v0.5.0 everywhere and do the following:
In my Action.sol:
pragma solidity ^0.5.0;
In Migrations.sol:
pragma solidity >=0.5.0 <0.6.0;
When running truffle ...
1
vote
1answer
30 views
Truffle test failing
i am learning solidity contracts and ethereum dapps. I have created a smart contract for creating a ERC20 token on using truffle dev environment.
pragma solidity ^0.5.0;
contract LearnTokens {
...
0
votes
0answers
21 views
cannot retrieve token price
i am trying to code a decentralized application and what i am trying to do right now is to get the token price of 1000000000000000 and display it. but when i try to get token price i keep getting 0. ...
0
votes
0answers
82 views
How to call contract method from specific address and private key without Metamask check
Good morning,
I need to known how call contract method in javascript from specific address(and relative private key) without the check of Metamask.
I explain better.
This is an example of js code, ...
2
votes
1answer
115 views
Cannot deploy contract on private network with truffle: gas required exceeds allowance or always failing transaction
I'm writing a contract based on the ring mixer contract from here https://ropsten.etherscan.io/address/0x5e10d764314040b04ac7d96610b9851c8bc02815
I've tested it with ganache. Everything worked fine ...
0
votes
2answers
118 views
solidity code compilation error?
pragma solidity ^0.5.0;
contract Ballot {
struct Voter {
uint weight;
bool voted;
uint8 vote;
// address delegate;
}
//modifer
modifier onlyOwner () {...
1
vote
1answer
82 views
UnimplementedFeatureError: Encoding type “struct BiddingContract.Bidder memory” not yet implemented
The code is broken with the new upgrade v0.5,
using
Truffle v5.0.1 (core: 5.0.1)
struct Bidder {
address bidders_address;
uint productId;
uint bidValue;
}
struct Product {
uint ...
0
votes
1answer
69 views
truffle-contract: Contract has not been deployed to detected network (network/artifact mismatch)
I am running a private network and would like to use truffle-contract to interact with the contracts. Unfortunately it gives me this error:
Error: Contract has not been deployed to detected network (...
0
votes
1answer
174 views
truffle-contract error: Number can only safely store up to 53 bits
I am using truffle-contract with a local quorum node and try to execute a smart contract method, but getting this error:
Error: Number can only safely store up to 53 bits
That's the way I do it:
...
0
votes
1answer
55 views
How does truffle get the address of the contract only by it's name?
When executing the command
truffle(develop)> let instance = await MetaCoin.deployed()
How does truffle get the address of the contract that is deployed ?
0
votes
1answer
63 views
How to change the account that is interacting with the deployed smart contract on Ganache? [duplicate]
When I enter truffle console and start interacting with the deployed contract truffle uses the first address, how to change the address for testing ?
user@user:~/workspace/smart-contract$ truffle ...
0
votes
0answers
44 views
Truffle-contract cannot find module 'debug'
I'm trying to connect my smart contracts to a frontend app using web3 and the truffle-contract node package. In my client-side javascript file, I am requiring the package as follows:
import contract ...
0
votes
1answer
26 views
Unable to use call.value to send the ether to another contract
Block Builder! I create a bank and client contracts, in order to reproduce DAO attack event. The client can deposit, but can not withdraw.
I enclose the repo from Github here:
https://github.com/...
0
votes
0answers
42 views
Struct Mapping: DeclarationError: Identifier not found or not unique for
Using openzepplin version 2.0.0 and solc version 0.5. I am writing an ERC721 token contract on truffle. Truffle compiles with no error on solc 0.4.23. I had to upgrade to 0.5 due to openzepplin ...
1
vote
1answer
32 views
Scope in events in web3 1.0 [closed]
Inside the callback of an event, how do I get the scope outside the function? Specifically, in the following scenario, I want the web3 object:
(using truffle-contracts and web3 1.0 here)
...
const ...
2
votes
0answers
55 views
this.contract.deployed() is not a function
I'm working on making a React frontend for my smart contract, but I'm having problems connecting it into my React code.
Here are the relevant portions of my code:
import TruffleContract from '...
-1
votes
1answer
67 views
Problem with the compilation in the truffle framework
I made a smart contract in Remix-Solidity IDE, when I compiled it I had no errors and I was able to remove the contract but when I tried to use the truffle for my Dapp and compiled it it showed me ...
1
vote
0answers
101 views
How to use the latest version of Truffle Contract in a web page?
I'm trying to use version 4.0.0 of truffle-contract in a browser app, so no NodeJS, no require or anything. So I followed the instructions in the doc, downloaded truffle-contract in non-minified ...
-2
votes
1answer
74 views
ParserError compiling Smart Contract, what's wrong?
I'm getting this error when trying to compile a contract using cmd on windows:
Error parsing C:/Users/alexa/Desktop/contracts/contracts/ApprovalContract.sol: ParsedContract.sol:6:37: ParserError: ...
2
votes
0answers
76 views
Installing Truffle without npm
I'm a student trying to install a truffle test RPC client (just for simple contract deployment in small scale).
I am using a remote Ubuntu machine in my university, and i don't root privileges.
...
2
votes
1answer
62 views
TruffleContract At() function with Drizzle
I am learning the Drizzle framework after I did a project using TruffleContract abstractions in Javascript (DApp).
I have multiple instances of a contract and I am not able to access at the instances ...
1
vote
1answer
84 views
Truffle-contract installed, but receiving error in Chrome console: Uncaught Error: Cannot find module 'truffle-contract'
I am working on my first end to end ethereum project. A problem that I am stuck on is that I have installed 'truffle-contract', but when I run my server and open the project in the Chrome browser, the ...
0
votes
1answer
80 views
Set up backup from private Ethereum (Ganache) [duplicate]
I have created an ethereum application with Ganache and truffle js. i have installed ganache in a server, and th application work. but when i stop the server i lose the the smart contract that i have ...
0
votes
1answer
117 views
Loading multiple truffle artifacts from a single sol file
Big picture: How do I get multiple contract instances from a single sol file using truffle-contract?
I have two Contracts in my .sol file (it's more of a contract factory)
const artifacts = require(...
0
votes
1answer
30 views
Ownership trasfer to crowdsale contract fails while deploying in truffle
I have created a "Token" and the "Crowdsale" contract as mentioned in the openzeppelin. Below is my deployment code in truffle. I am new to ICO related coding and solidity. The question may be very ...
0
votes
1answer
58 views
Deploying fails with different compile version
I'm trying to implement a simple card game. Actually, everything is working fine. Until I tried to move from 0.4.0 to 0.4.22. Any idea what is going wrong?
Thanks a lot. And here the code:
pragma ...
0
votes
1answer
91 views
Truffle Flattener creates empty flat file
Using trufffle-flattener, I am trying to create a flat file merging all the related solidity based codes. After executing the flattening scripts, I see only the empty flat file getting created. Could ...
0
votes
1answer
22 views
Deploying using Truffle unbox
The following code is taken from truffle unbox
initContract: function() {
$.getJSON("adding.json", function(addingdappfrontend) {
App.contracts.Add = TruffleContract(...
0
votes
1answer
1k views
Uncaught ReferenceError: TruffleContract is not defined
I am working on a smart contract. When I try to serve my smart contract via lite-server I see following error in the browser console
Here my app.js source code: https://pastebin.com/UjFuYCyQ
I have ...
1
vote
1answer
41 views
How to process Smart Contracts payable functions in batch?
I am aware that metamask will enable effective security for processing via the web browser a payable function action to a smart contract.
What happens in batch?
I have an API service which then ...
2
votes
2answers
90 views
Truffle interaction with my smart contract getting Vm exception
pragma solidity ^0.4.23;
contract Hotelbooking {
event Transfer(
address indexed _from,
address indexed _to,
uint256 _value
);
mapping(address => uint256) public ...
1
vote
1answer
145 views
truffle-contract cannot deploy in node js
This is the error I get.
internal/modules/cjs/loader.js:631
throw new ERR_INVALID_ARG_TYPE('id', 'string', id);
^
TypeError [ERR_INVALID_ARG_TYPE]: The "id" argument must be of ...
0
votes
1answer
40 views
How can I persist the chain state of Truffle develop? [duplicate]
Is it possible to persist the chain state of Truffle develop?
If my truffle console crash, can I restore the chain state?
-1
votes
1answer
59 views
I have deployed my contract using truffle but to see my accounts i am using web3 can any one explain what is going inside my contract while deploying
web3.eth.accounts
[ '0x5aad8308d0c45d2b9fc1c465316ba071d2eb6f9c',
'0x9d73990623df116eb56d300773aa458a11b11e4b',
'0x1ea4dc6c3ab6d9ddca32083e3d5313ee319abd29',
'...
1
vote
1answer
113 views
Error: Web3ProviderEngine does not support synchronous requests
Error: Web3ProviderEngine does not support synchronous requests.
I have an error when deploying contract to rinkeby
provider const HDWalletProvider = require('truffle-hdwallet-provider')
module....
2
votes
2answers
50 views
Working of Truffle
The following is my code in solidity
pragma solidity ^0.4.2;
contract DappToken {
//Constructor
// set no of Tokens
// Read the total number of Tokens
uint256 public totalSupply;
...
