#Dynamic Social Image Preview Generation

1 messages · Page 1 of 1 (latest)

young bridge
#

I have a page that shows the results of a game:

app/(main)/results/[leaderboardID]/page.tsx

"use client";

import { Footer } from "@/components/footer";
import { Logo } from "@/components/logo";
import { Button } from "@/components/ui/button";
import { Card, CardHeader, CardTitle, CardDescription, CardContent } from "@/components/ui/card";
import { Dialog, DialogContent, DialogHeader, DialogTitle, DialogDescription } from "@/components/ui/dialog";
import { Separator } from "@/components/ui/separator";
import { ArrowRight, Download, Gamepad2, Home, Loader2, Share, Share2 } from "lucide-react";
import Link from "next/link";
import html2canvas from 'html2canvas-pro';
import { useEffect, useRef, useState } from "react";
import Image from "next/image";
import { api } from "@/convex/_generated/api";
import { useQuery } from "convex/react";
import { useRouter, useSearchParams } from "next/navigation";
import { cn } from "@/lib/utils";
import { useBanCheck } from "@/hooks/use-ban-check";

type Props = {
    params: { 
      leaderboardID: string
    }
}

const ResultPage = ({ params }: Props) => {
...
};

export default ResultPage;

How would I set it up for this page?

dense idolBOT
#

Hi @young bridge. I'm kapa.ai, your friendly support bot. I will try to answer your question by searching through the knowledge base. :wave:

#

To set up dynamic social image preview generation for your game results page, you can use Next.js's built-in Open Graph (OG) image generation feature. Here's how you can implement it for your specific case:

  1. First, create a new file named opengraph-image.tsx in the same directory as your page file:
app/(main)/results/[leaderboardID]/opengraph-image.tsx
  1. In this file, you'll use the ImageResponse API to generate the OG image dynamically. Here's an example of how you can structure it:
import { ImageResponse } from 'next/og'
import { api } from "@/convex/_generated/api";

export const runtime = 'edge'

export const alt = 'Game Results'
export const size = {
  width: 1200,
  height: 630,
}

export const contentType = 'image/png'

export default async function Image({ params }: { params: { leaderboardID: string } }) {
  // Fetch the game results data using the leaderboardID
  const results = await api.leaderboard.getResults(params.leaderboardID);

  return new ImageResponse(
    (
      <div
        style={{
          fontSize: 48,
          background: 'white',
          width: '100%',
          height: '100%',
          display: 'flex',
          flexDirection: 'column',
          alignItems: 'center',
          justifyContent: 'center',
        }}
      >
        <h1>Game Results</h1>
        <p>Leaderboard ID: {params.leaderboardID}</p>
        {/* Add more details from your results data */}
      </div>
    ),
    {
      ...size,
    }
  )
}

This setup will generate a dynamic OG image for each unique leaderboardID.

  1. Next.js will automatically use this generated image for Open Graph tags. However, if you want to explicitly set the OG metadata, you can create a generateMetadata function in your page file:
import type { Metadata } from 'next'
#

export async function generateMetadata({ params }: Props): Promise<Metadata> {
return {
title: Game Results - Leaderboard ${params.leaderboardID},
openGraph: {
images: /results/${params.leaderboardID}/opengraph-image,
},
}
}


Add this function to your `app/(main)/results/[leaderboardID]/page.tsx` file.

By implementing these steps, you'll have set up dynamic social image preview generation for your game results page. Each unique leaderboard ID will generate its own custom OG image, which will be used when sharing the page on social media platforms.

For more detailed information on this feature, you can refer to the **Next.js documentation on generating images using code** (<https://nextjs.org/docs/app/api-reference/file-conventions/metadata/opengraph-image#generate-images-using-code-js-ts-tsx>).
----------------------
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#

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young bridge
#

@dense idol I have this file: opengraph-image.tsx

import { ImageResponse } from 'next/og';
 
export const runtime = 'edge';
 
// Image metadata
export const alt = 'About Acme';
export const size = {
  width: 1200,
  height: 630,
};
 
export const contentType = 'image/png';
 
// Image generation
export default async function Image() {
  return new ImageResponse(
    (
      <div
        style={{
          fontSize: 128,
          background: 'white',
          width: '100%',
          height: '100%',
          display: 'flex',
          alignItems: 'center',
          justifyContent: 'center',
        }}
      >
        Username: [USERNAME GOES HERE]
      </div>
    ),
  );
}

The page.tsx file doesn't do anything or invoke this file. How do I pass in the user's username into the opengraph-image.tsx file?

dense idolBOT
#

Let me check the knowledge base for you again. Give me one moment! :books:

#

To pass the user's username into the opengraph-image.tsx file, you can use dynamic route parameters. However, there's a limitation with the current implementation of OpenGraph image generation in Next.js that doesn't allow direct access to dynamic route parameters in catch-all routes or optional catch-all routes.

As a workaround, you can create an API route to generate the image dynamically. Here's how you can modify your setup:

  1. Create a new API route file:
app/api/og/route.tsx
  1. In this file, implement the image generation logic:
import { ImageResponse } from 'next/og';
 
export const runtime = 'edge';

export async function GET(request: Request) {
  const { searchParams } = new URL(request.url);
  const username = searchParams.get('username');

  return new ImageResponse(
    (
      <div
        style={{
          fontSize: 128,
          background: 'white',
          width: '100%',
          height: '100%',
          display: 'flex',
          alignItems: 'center',
          justifyContent: 'center',
        }}
      >
        Username: {username || '[USERNAME NOT PROVIDED]'}
      </div>
    ),
    {
      width: 1200,
      height: 630,
    }
  );
}
  1. In your page file where you want to use this dynamic OpenGraph image, you can set the metadata like this:
import { Metadata } from 'next';

export async function generateMetadata({ params }): Promise<Metadata> {
  const username = 'example_user'; // Replace with actual logic to get the username

  return {
    openGraph: {
      images: [`/api/og?username=${encodeURIComponent(username)}`],
    },
  };
}

This approach allows you to pass the username as a query parameter to your API route, which then generates the image dynamically.

#

For more information on this approach, you can refer to the Vercel guide on Using an external image as OG image (https://vercel.com/guides/using-an-external-dynamic-image).

Remember that this is a workaround due to the current limitations of OpenGraph image generation in Next.js with dynamic routes. The Next.js team is aware of these limitations, and future updates may provide more straightforward ways to handle this scenario.

Vercel Guide: Using an external image as OG image (https://vercel.com/guides/using-an-external-dynamic-image)

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