[Request] Guide to deploy ERC1820

[abcoathup]

Hi @mrwillis

I have updated my Simple ERC777 token example to include a recipient contract.

Simple ERC777 token example

OpenZeppelin 2.3.0 release candidate includes an implementation of ERC777. I created a simple ERC777 token inheriting from the OpenZeppelin implementation, based on the SimpleToken example. A key point to note is that in a testing environment an ERC777 token requires deploying an ERC1820 registry using @openzeppelin/test-helpers. (Thanks @frangio) The same applies when deploying to a private network. (We can use the OpenZeppelin Test Helpers to deploy the ERC1820 registry to a private network…

The recipient contract needs to implement the tokensReceived function from IERC777Recipient.sol.

The recipient contract also needs to register with the ERC1820 registry that it is an interface implementer of ERC777TokensRecipient
_erc1820.setInterfaceImplementer(address(this), TOKENS_RECIPIENT_INTERFACE_HASH, address(this));