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Questions - openzeppelin

Error during minting with code from Opensea guide

I'm trying to deploy my first SmartContract following the Opensea guide. Everything was working fine until I set a price for my tokens and added the payable keyword. Now when I try to mint, I get the ...
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cronoklee

smartcontracts

nft

hardhat

openzeppelin

opensea

Votes: 0

Answers: 1

Latest Answer

I figured out a solution for this issue. You need to set the price inside the mint task in mint.js like so: task("mint", "Mints from the NFT contract") .addParam("address"...
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cronoklee

Upgreadable ERC20 TypeError: Cannot create property 'kind' on string

I created 2 smart contracts. contract A is ERC20 token and B is a contract that accepts ERC20 A as payment method. When deploying, contract A got deployed but when I passed its proxy address to the in...
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kool Erick

solidity

smartcontracts

hardhat

openzeppelin

Votes: 0

Answers: 1

Latest Answer

I was passing the parameters in the next smart contract the wrong way, it should be const SmartBInit= await upgrades.deployProxy(SmartB,[tokenaddr],{} Instead of const SmartBInit= await upgrades.depl...
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kool Erick

OpenZeppelin's ownable contract vs require msg.sender

I am currently learning solidity through CryptoZombies and I came across a point where they say ,"setKittyContractAddress is external", so anyone can call it! That means anyone who called th...
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Nidhish Shanker

blockchain

ethereum

solidity

cryptocurrency

openzeppelin

Votes: 0

Answers: 1

Latest Answer

can we not just use msg.sender for this purpose That's exactly what the OpenZeppelin Ownable does in the background. Through a series of steps, it sets the owner variable, and then validates msg.sen...
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Petr Hejda

Easy way to view a list of the tokens owned by a user?

I'm sure this could be done on the front end as well as from solidity. I saw a few posts that seemed inefficient, where they are creating a new mapping and storing unnecessary data to the blockchain w...
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Matt Jaf

blockchain

solidity

smartcontracts

nft

openzeppelin

Votes: 0

Answers: 1

Latest Answer

I fixed the code in my first post, the issue was that I had to declare a uint[] memory variable called result and set it equal to a new uint array. The length of the array should be however many token...
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Matt Jaf

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