Amount of NFTs Minted (Merch Store)

Moralis General
#1

I’m working for a coin and i’m doing a merch store nft marketplace. Basically i’m trying to mint a certain amount of a nft(t-shirt with 500 stock, for example). I tried adding a collection_id to the nft but i can’t get it to show up on EthNFTOwners so i can query the collection_id from that table. I tried using an event and another table but i’m having issues transfering ownership in that table. I saw that you have an amount attribute in EthNFTOwners, but how do i use that in contract + frontend?

#2

Im trying to understand what you need.

You need total supply of your newly minted NFT?
Is it ERC721 or ERC1155?

#3

If you do many ERC721s and need to connect them into a collection - it’s wrong way of doing it.

Better to use ERC1155 and have the ERC1155 contract hold all items in same collection.

#4

Not total supply, i mint my nfts in bulk after inputting the quantity that i want. For example, i have 500 tshirts i wanna sell. I create the tshirt nft with metadata and a given quantity. The createItem function receives that quantity and mints the number of tshirt nfts that i inputted. The problem is that they have different tokenIds and i need to have them associated with each other. I didn’t find a way to use the amount attribute in EthNFTOwners and i was unable to add a collectionId variable to the EthNFTOwners table to identify that particular colection and stock of tshirts. So i created another table with a event fired on item creation that gives it the collectionId. And then i query the items from that table to display to the user, but i created an owner attribute that i can’t get to change on sale. I even tried adding a beforeTokenTransfer function override and adding a query in the itemSold event to change the owner in the table i have created. But it didn’t work.

#5

You need to use ERC1155 so each type of t-shirt has same token_id

Here is how I would do it:

  1. Launch ERC1155
  2. In ERC1155 each token_id can have many items inside of it
  3. Each t-shirt gets a new token_id and can have X t-shirts as amount
  4. Moralis tracks all owners for this by default and you can easily filter by token_id

Learn more: https://docs.openzeppelin.com/contracts/3.x/erc1155

#6

Thank you very much, i’ll look into this and i’ll let you know of the results. One more question, should i only use erc1155 for items with x amount or should i use it for truly unique 1 of a kind items as well instead of erc721?

#7

I would use it for unique too and set amount to 1 :raised_hands:

#8

And then when you sell, you can sell just a certain number of that amount right? Can this also be used for shared ownership?

#9

You can transfer certain amount of each token correct

Each token_id can have many owners as each token_id has many tokens and they can have different owners

1 Like
#10

Thank you for your support Ivan, i’ll follow up with some feedback after i try this :pray: