需要帮助构建从母版nft创建新版本nft的函数。

Question

图像链接到我的代码

https://i.stack.imgur.com/UWtpj.png

我目前正在用Rust/Anchor-Solana编写一个Solana元复合NFT程序，特别是编写一个逻辑来从主版NFT创建一个版本NFT。

在调用mpl_token_metadata::instruction::mint_new_edition_from_master_edition_via_token指令时，我发现它需要metadata和metadata_mint字段作为参数。然而，在元文档中，指令似乎只需要主记录元数据帐户。

问题：

我应该在每个字段(metadata和metadata_mint)中输入哪个帐户键或值，以及为什么？

代码：

pub fn create_new_edition_nft(
        ctx: Context<CreateNewEdition>,
        edition: u64,
    ) -> Result<()> {
        let edition_infos = vec![
            ctx.accounts.token_program.to_account_info(),
            ctx.accounts.new_metadata.to_account_info(),
            ctx.accounts.new_edition.to_account_info(),
            ctx.accounts.master_edition.to_account_info(),
            ctx.accounts.new_mint.to_account_info(),
            ctx.accounts.new_mint_authority.to_account_info(),
            ctx.accounts.payer.to_account_info(),
            ctx.accounts.token_account_owner.to_account_info(),
            ctx.accounts.token_account.to_account_info(),
            ctx.accounts.new_metadata_update_authority.to_account_info(),
            ctx.accounts.metadata.to_account_info(),
            ctx.accounts.system_program.to_account_info(),
            ctx.accounts.rent.to_account_info(),
        ];
        msg!("Edition Account Infos Assigned");
        invoke(&mint_new_edition_from_master_edition_via_token(
            ctx.accounts.token_program.key(),ctx.accounts.new_metadata.key(),ctx.accounts.new_edition.key(), ctx.accounts.master_edition.key(), ctx.accounts.new_mint.key(),ctx.accounts.new_mint_authority.key(), ctx.accounts.payer.key(), ctx.accounts.token_account_owner.key(), ctx.accounts.token_account.key(), ctx.accounts.new_metadata_update_authority.key(), ctx.accounts.metadata.key(), ctx.accounts.metadata.key(), edition
        ), edition_infos.as_slice())?;

        msg!("A New Edition Nft Minted !!!");
        Ok(())
    }

#[derive(Accounts)]
pub struct CreateNewEdition<'info> {
    /// CHECK: This is not dangerous because we don't read or write from this account
    #[account(mut)]
    pub new_metadata: UncheckedAccount<'info>,
    /// CHECK: This is not dangerous because we don't read or write from this account
    #[account(mut)]
    pub new_edition: UncheckedAccount<'info>,
    /// CHECK: This is not dangerous because we don't read or write from this account
    #[account(mut)]
    pub master_edition: UncheckedAccount<'info>,
    /// CHECK: This is not dangerous because we don't read or write from this account
    #[account(mut)]
    pub new_mint: UncheckedAccount<'info>,    
    /// CHECK: This is not dangerous because we don't read or write from this account
    #[account(mut)]
    pub edition_mark_pda: UncheckedAccount<'info>,    
    #[account(mut)]
    pub new_mint_authority: Signer<'info>,
    #[account(mut)]
    pub payer: AccountInfo<'info>,
    // /// CHECK: This is not dangerous because we don't read or write from this account
    #[account(mut)]
    pub token_account_owner: UncheckedAccount<'info>,
    // /// CHECK: This is not dangerous because we don't read or write from this account
    #[account(mut)]
    pub token_account: UncheckedAccount<'info>,
    /// CHECK: This is not dangerous because we don't read or write from this account
    #[account(mut)]
    pub new_metadata_update_authority: UncheckedAccount<'info>,
    /// CHECK: This is not dangerous because we don't read or write from this account
    #[account(mut)]
    pub metadata: UncheckedAccount<'info>,    
    // #[account(mut)]
    pub token_program: Program<'info, Token>,
    pub system_program: Program<'info, System>,
    /// CHECK: This is not dangerous because we don't read or write from this account
    pub rent: AccountInfo<'info>,
}

文档参考：

从主版打印新版本的文档：

https://docs.metaplex.com/programs/token-metadata/instructions#print-a-new-edition-from-a-master-edition

Answer 1

您正在讨论的元工文档是solana指令的文档，而不是锈蚀api的文档。它们是不同的。如果你看一下生锈代码，你就会看到不同之处。

文档中描述的帐户与代码提供的帐户相匹配：

let accounts = vec![
   AccountMeta::new(new_metadata, false),
   AccountMeta::new(new_edition, false),
   AccountMeta::new(master_edition, false),
   AccountMeta::new(new_mint, false),
   AccountMeta::new(edition_mark_pda, false),
   AccountMeta::new_readonly(new_mint_authority, true),
   AccountMeta::new(payer, true),
   AccountMeta::new_readonly(token_account_owner, true),
   AccountMeta::new_readonly(token_account, false),
   AccountMeta::new_readonly(new_metadata_update_authority, false),
   AccountMeta::new_readonly(metadata, false),
   AccountMeta::new_readonly(spl_token::id(), false),
   AccountMeta::new_readonly(solana_program::system_program::id(), false),
   AccountMeta::new_readonly(sysvar::rent::id(), false),
];

您正在讨论的变量metadata_mint用于计算链上edition_mark_pda地址的地址：

    let (edition_mark_pda, _) = Pubkey::find_program_address(
        &[
            PREFIX.as_bytes(),
            program_id.as_ref(),
            metadata_mint.as_ref(),
            EDITION.as_bytes(),
            as_string.as_bytes(),
        ],
        &program_id,
    );

当您将此与文档进行比较时，您将看到应该提供哪些内容：

版pda标记创建-将检查是否存在.(“元数据”、程序id、主元数据薄荷id、“edition_number”、edition_number不是您在args中传递的版本号，实际上是edition_number=层(edition_number/ edition _MARKER_BIT_SIZE))。

metadata :=主记录元数据帐户

metadata_mint :=主元数据薄荷id