near_contract_standards::non_fungible_token::approval

Trait NonFungibleTokenApprovalReceiver

Source 
pub trait NonFungibleTokenApprovalReceiver {
    // Required method
    fn nft_on_approve(
        &mut self,
        token_id: TokenId,
        owner_id: AccountId,
        approval_id: u64,
        msg: String,
    ) -> PromiseOrValue<String>;
}
Expand description

Approval receiver is the trait for the method called (or attempted to be called) when an NFT contract adds an approval for an account.

Required Methods§

Source

fn nft_on_approve( &mut self, token_id: TokenId, owner_id: AccountId, approval_id: u64, msg: String, ) -> PromiseOrValue<String>

Respond to notification that contract has been granted approval for a token.

Notes

  • Contract knows the token contract ID from predecessor_account_id

Arguments:

  • token_id: the token to which this contract has been granted approval
  • owner_id: the owner of the token
  • approval_id: the approval ID stored by NFT contract for this approval. Expected to be a number within the 2^53 limit representable by JSON.
  • msg: specifies information needed by the approved contract in order to handle the approval. Can indicate both a function to call and the parameters to pass to that function.

Implementors§