Integrate DAI payments in existing contract

Support
1

Hi everyone,

Long time lurker of the forums. I launched my defi mvp 2 weeks ago, coded with Ethereum payments only.
I am now looking to integrate DAI payments into my contract. The only thing I need is for the user to send DAI to my contract, my contract will do something with the DAI after the transfer is completed.
I googled a lot, looked at this OZ guide, but I’m still not sure on which steps to take.

For now I can only see this as being needed:

  • Import ERC20.sol from OZ
  • Set the DAI interface:
    interface DaiToken { function transfer(address dst, uint wad) external returns (bool); function balanceOf(address guy) external view returns (uint); }

After that, I’m a bit lost on what to do next.
Could anyone guide me a bit, or have a step by step tutorial by any chance (couldn’t find one through Google searching)?

Thanks in advance.

2

Exactly what you need to do with DAI?
You can already receive them. So please give more details to let us help you

3

Thanks for your reply.
I need people to be abe to select DAI as a payment option frontend (using React), so that’s where the function transfer is for?
But how do I tell my contract people used DAI (or USDC,…)? Do I need to link the DAI contract address?