Questions tagged [drizzle]

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How to write a component in Drizzle React? [closed]

The components are for the following functions: function tokenURI(uint256 _tokenId) public view returns (string) { require(exists(_tokenId)); return tokenURIs[_tokenId]; } function ...
Andy's user avatar
  • 3
2 votes
0 answers
211 views

How to update react component state with Drizzle

I'm using react and drizzle and want to update the classes state based on data returned from a call to a contract. I'm using the standard pattern from the drizzle box and here (https://itnext.io/how-...
Ayeayeron's user avatar
  • 161
5 votes
1 answer
814 views

Having issues using the Drizzle library in React

Using Ubuntu 16.04 Greetings, all I was following the tutorial for getting Drizzle up and running located here. I advanced to this step when I attempted to run the app using the "npm start" command ...
Jake Armitage's user avatar
1 vote
0 answers
327 views

Uncaught at initializeDrizzle TypeError: Cannot read property 'apply' of undefined

I am working a Drizzle truffle box project, and this is my first intro to React so I am struggling a little bit. I keep getting this error and I cannot for the life of me seem to fix it. The ...
FS_woods's user avatar
2 votes
0 answers
513 views

How to instantiate and interact with a contract in web3, metamask and drizzle, given the ABI and the address?

I have a method on a Contract A which I am calling (in my dapp). This method in turn instantiates a second Contract B and emits an event with contract B's address. I then use this address, along with ...
CollaborativeLearner's user avatar
3 votes
1 answer
1k views

Drizzle cacheCall is not updating data correctly

I have a react component which is interacting with a solidity contract via drizzle. I store a cacheCall index in the constructor: this.opcTokenCacheCallIndex = context.drizzle.contracts.OPCToken....
CollaborativeLearner's user avatar
2 votes
2 answers
400 views

Drizzle and mapDispatchToProps not working

I'm still struggling with Drizzle, trying to dispatch my own action. Based on the Drizzle box, I added the following to HomeContainer: import Home from './Home'; import {drizzleConnect} from 'drizzle-...
Sebastien's user avatar
  • 323
3 votes
2 answers
2k views

How to Listen to Contract Events in Drizzle

Let's take the example of the SimpleStorage contract that comes with the truffle box drizzle-box How can we listen to the event StorageSet and console.log it to the JS console? drizzleOptions.js ...
Nyxynyx's user avatar
  • 1,167
1 vote
2 answers
424 views

can't access web3 object in Drizzle Box

I am building a DAPP based on drizzle box. I am struggling to find out how can i get the web3 instance without initiating a new one I want to end up with something like : this.props.web3.eth Thanks
katapulte's user avatar
  • 173
2 votes
3 answers
213 views

Is drizzle a contracts lib?

I'm researching about smart contracts, and been seeing a lot of truffleframework, ganache and drizzle. In the other hand, only found broad descriptions of those tools: "Drizzle is a collection of ...
Moisés's user avatar
  • 123
1 vote
0 answers
257 views

set default amout to transaction

I have a ticket system where you can buy some tickets to an given price. I want to set the amount to the method and send it back to the contract. For this I'm using metamask but I don't really get, ...
frosty4321's user avatar
4 votes
2 answers
1k views

How can I access the address of a contract in a drizzle dapp?

I've started working from the drizzle box and can access functions within contracts, but if I want to give an allowance to a contract address so it can use users tokens how can I give the correct ...
Ayeayeron's user avatar
  • 161
1 vote
1 answer
2k views

How to access web3Instance when using Truffle's Drizzle

I'm working on a dapp with the boilerplate created by running truffle unbox drizzle and need to call functions provided by the web3 instance. Is there a way to access the web3 instance object? All we ...
Nyxynyx's user avatar
  • 1,167
3 votes
1 answer
355 views

Truffle: cannot use drizzle for communicating between react app and blockchain

I am using Truffle for writing smart contract and using drizzle and drizzle-react for communicating with smart contract. I have configured as tutorial said. After that, I try to print out: this....
hqt's user avatar
  • 449
7 votes
1 answer
928 views

Truffle unbox drizzle not working properly

truffle version = 4.1.4 truffle unbox drizzle truffle compile truffle migrate npm run build npm run start this gets me this error: Truffle Drizzle-box fails with TypeError: (0 , _drizzle....
Travis Rivera's user avatar
3 votes
2 answers
2k views

Drizzle Contract call returns unexpected object

I have a view function in my smart contract that returns a uint. In the Truffle Drizzle javascript page I make the call when the page loads: this.contracts.TheContract.methods.getNumber.call() I ...
Phillip Gibb's user avatar
4 votes
4 answers
622 views

Truffle Drizzle-box fails with TypeError: (0 , _drizzle.generateContractsInitialState) is not a function

Right after unboxing Drizzle-box I'm getting a TypeError: (0 , _drizzle.generateContractsInitialState) is not a function. Ganache is running on localhost:8545, contracts are deployed, Metamask ...
Dmitry Pasenko's user avatar
1 vote
0 answers
359 views

Drizzle React Component ContractData for array returns empty

<ContractData contract="TheContract" method="getData" methodArgs={[accounts[0], "0", { from: accounts[0] }]} /> and a contract view function function getData() public view returns (...
Phillip Gibb's user avatar
1 vote
0 answers
448 views

Drizzle React Component ContractData returns empty

My contract call to a simple view function that returns an array of data returns empty using: From testing it appears that ContractData can't deal with more than one return value. If I return one unit ...
Phillip Gibb's user avatar
0 votes
0 answers
333 views

Truffle Drizzle: Passing String address results in Invalid Number of Parameters

I have a view function in my contract that takes an address as a parameter and returns a uint: function getNumber(address _address) public view returns (uint) { require(_address != 0x0); ...
Phillip Gibb's user avatar
1 vote
1 answer
662 views

Truffle Drizzle ContractData call keccak256 error

I started with truffle unbox drizzle then made use of my contract. I can make use of the ContactForm without error in App.js: <ContractForm contract="TheContract" method="addData" labels={["...
Phillip Gibb's user avatar

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