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How to Build an NFT Gallery using React and QuickNode's NFT API
July 25, 2022
Overview
Ever wanted to get a list of all the owners of a particular NFT collection? Or wanted to fetch all the metadata for an NFT collection? From experience, you may know that compiling all this NFT data can be quite complex as you would need to gather data from multiple sources and keep it up to date in your database. Fortunately, QuickNode's NFT API helps us streamline the process of retrieving NFT data. In this guide, we will show you how to retrieve all the NFTs from a particular collection and demonstrate how to display them on our front-end using React, Ethers.js, and TailwindCSS.
Dive into the different methods available on the QuickNode NFT API
Boot up a QuickNode Ethereum node with the NFT API add-on
Create a React application that displays data retrieved from the NFT API using Ethers.js and TailwindCSS
Diving into the QuickNode NFT API
Before we dive into building our gallery, let us learn more about the different methods QuickNode offers for retrieving NFT data.
qn_fetchNFTCollectionDetails - This method is used to return high-level information about a collection. Collection details include:
Collection name
Collection description
Block number the collection was created in
The transaction hash from deployment
The type of NFT (i.e., at the time of this writing, this method supports ERC-721 and ERC-1155 standards)
qn_fetchNFTsByCollection - This method returns aggregated data on NFTs within a given collection. The response data includes an array of token objects, which we will find useful when building our NFT gallery. We will need the following fields for our front-end: token ID, image URL, and associated attributes (i.e., traits). All this data is aggregated by the NFT API; without it, we'd have to use multiple sources of data to compile what we need, which can be quite complex and cumbersome. Note that at the time of this writing, this method only supports ERC-721 contracts.
qn_verifyNFTsOwner - Last but not least, the qn_verifyNFTsOwner method allows one to verify if an address holds a particular NFT. How does it work? Well, you pass in a wallet address, and an array of NFT addresses along with their token IDs. If the owner is verified, it will return an array of owned NFTs for the provided wallet. Even Twitter uses this feature to verify NFTs on their platform 🤯
To see the complete documentation, view our docs here.
Note - The NFT API is only supported on Ethereum mainnet and Solana at the time of this writing but will likely expand to more chains in the future.
Setting Up the React Project
Now that we are more familiar with QuickNode's NFT API, we can start building! In this section, we will create our React app and install the required dependencies.
First, let us create a project directory by running the following command:
npx create-react-app nft-gallery
Once our project directory is created, let us navigate inside it and install the required dependencies. We will be installing Ethers.js to make requests to our Ethereum node and will also use React and TailwindCSS to make our frontend look beautiful!
cd nft-gallery
npm install ethers
npx tailwindcss init -p
To test that everything is working up until this point, you can start the development server by running the command.
npm start
When you navigate to the URL your server is running on, you should see the following:
Before moving onto booting our Ethereum node, let's open a code editor and replace the content in tailwind.config.js with the following code:
Setting Up an Ethereum Endpoint with the NFT API Add-on
Setting up your Ethereum node with the NFT API is quite easy. If you haven't signed up already, you can create an account here.
Once you have logged in, navigate to the quicknode.com/endpoints page page and click "Create an endpoint". Select Ethereum mainnet, then click Next. On the "Configure add-on's" tab, select the "NFT Fetch Tool":
Once you finish the payment details, your endpoint is ready, copy the HTTP Provider link:
Building the NFT Gallery
Now that we have our Ethereum node and React project set up, it's time to get to building! We will open our project in the code editor of preference (mine is VScode) and then start building the functions we need to load and display NFT data on our frontend.
First, we will enable tailwind so our frontend looks pretty! Navigate to the src/Index.js file and input the following link element in between lines 9-10 (i.e, between the <React.StrictMode> & <App/ > elements):
Remember to input your QuickNode HTTP URL in the provider variable above.
> Note: If you plan to publish your code publicly, we recommend using a .env file to store your QuickNode RPC endpoint to prevent it from being compromised.
So what does the code above do?
Starting from the top to bottom, we will first import the required libraries and components. Next, we will create three useState variables that we'll need when fetching data from the NFT API. The nfts state variable will hold the array of NFT data (i.e., name, token ID, current owner, traits, and transaction history). The other two useState variables will track the loading state and the address the user searches for. For convenience, we will set a default address in our state variable address (e.g. 0xaAdBA140Ae5e4c8a9eF0Cc86EA3124b446e3E46A).
We also created a fetchCollection function that uses Ethers.js to request data from the NFT API (specifically the qn_fetchNFTsByCollection method). Our request includes the collection address (i.e., collection), the page number we would like returned (i.e., page), and the number of NFTs we would like returned on each page (i.e., perPage). In this example, we set the perPage value to 10, but feel free to modify this number. Note, you can request up to 100 items per page (if this field is omitted, the default is set to 40 items per page). Additionally, our useEffect function will run our fetchCollection() function every time we set a new value in the address state variable.
In the return() call (which contains our JSX), we first input our CollectionSearch component. This component contains our search form and its associated event handling. Our logic is, if the search is valid, we will map over each NFT in the response and map it into our NFTCard component. A No Collection Found banner will show on the page if the search returns an error.
Moving forward, we will create a new folder under the src directory called components. Once our components folder is created, we will make a new file inside it called CollectionSearch.js and input the following code:
The code above does a few things; it will create the form and button element users will use to search for different collections. It will also keep track of the latest search.
Lastly, we will need to create another component to render our NFTs and associated metadata. Create a file in the components called NFTCard.js, then input the following code:
If you want to build on top of this guide, here are some additional features you can implement on your front-end to improve the user experience:
Add pagination so users can see the complete NFT collection
Add a Modal window for viewing transaction history
Conclusion
Congratulations! You have learned how to query data from QuickNode's NFT API and display it on your React app! To continue building on your new skills and knowledge, check out our collection of guides here.
We❤️ Feedback!
If you have any feedback or questions on this guide, feel free to reach out to us via Twitter or our Discord community server. We’d love to hear from you!
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