Mint on Polygon using WETH instead of MATIC

[BrwGamer]

Hello,
I have developed a mint function directly on my website, on mumbai polygon testnet.

My code works and the transaction is paid automatically by default with MATIC (for the cost and fees).

Since opensea uses WETH instead of MATIC on the polygon chain, I want WETH to be used to pay for the transaction.
How to do this with ethers.js?

Thank you very much!

[zemse]

On Polygon you cannot mint WETH, you directly have WETH as an ERC20 token.

You can definitely use WETH, just use the WETH contract address on the polygon chain. Does this help?

[BrwGamer]

I finally opted to make transaction with MATIC directly. I also found this project that do it with MATIC: https://nft.bestdragon.app/RhinosGuardians/ but I cannot understand the javascript code used.

[andrewkmin]

I finally opted to make transaction with MATIC directly.

Awesome! Super curious - care to share any details on how you went about it?

[BrwGamer]

I found a tweet about it on twitter.

[ryanjsfx2424]

I understand the gas will have to be paid with matic - but that's pretty tiny. I'd like to allow users to mint using whatever token they want, starting with allowing weth and then I'd want to expand to allow payment with SHIB and other erc-20 tokens on polygon as well.

So, same question as BrwGamer. Last version I gave up and just allowed payment with matic and this version I'll probably do the same. But would be nice and should definitely be possible to expand to other coins...I'll update this if/when I figure it out but any tips appreciated (zemse's response sounds promising although it apparently didn't work for BrwGamer).

[WrappedUsername]

Here you go my friends!

// adding weth transferFrom, working
    const wethPolygonContract = new ethers.Contract('0x7ceb23fd6bc0add59e62ac25578270cff1b9f619', 
    ['function approve(address spender, uint256 amount)', 
    'function transferFrom(address sender, address recipient, uint256 amount)'], signer);
 
    // Works!
    const wethTx = await wethPolygonContract.transferFrom(
    "0x7ceb23fd6bc0add59e62ac25578270cff1b9f619",
    "0x3Bfa52b2d73Ce7a9a7A45Eb9Fe35c1d9199931dd", 
    "50000000000000000",
    { gasLimit: 3000000 });
    
    await wethTx.wait();

    const _price = ethers.utils.formatUnits(wethTx);
    console.log({ value: _price });

    await VoxelHelosGenesis.safeMint(
      
      signer.getAddress(),
      // fixed the BigNumber error, removed { value: _price }, now working!
      _price, 
      // this is working
      { gasLimit: 3000000 }, 
       
    );

[kingahmedino]

Going through this, I think I found the solution to this question: https://ethereum.stackexchange.com/questions/57286/make-function-payable-for-a-specific-erc20-token

[BrwGamer]

Thanks, did you try it? Does it works?

[ryanjsfx2424]

Thanks, yeah I did end up doing something like that :)

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On Thu, May 12, 2022 at 8:54 AM BrwGamer ***@***.***> wrote: Thanks, did you try it? Does it works? — Reply to this email directly, view it on GitHub <#2126 (reply in thread)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AW6PK3JR3ESIOHNC5MF4XR3VJSTK3ANCNFSM5FHK7MDQ> . You are receiving this because you commented.Message ID: <ethers-io/ethers .***@***.***>