When fetching data for individual <Card> components, a potential issue arises - loading each card separately may cause a popping effect as they load in. This sudden visual change can be jarring for users.

To mitigate this problem, consider the following steps in the page.tsx file.

Back to the Project

Delete the <Card> components;
Delete the fetchCardData() function;
Import a new wrapper component called <CardWrapper />;
Import a new skeleton component called <CardsSkeleton />;
Wrap <CardWrapper /> in Suspense.

app/dashboard/(overview)/page.tsx

import { Card } from '@/app/ui/dashboard/cards';
import IncomeChart from '@/app/ui/dashboard/income-chart';
import LatestInvoices from '@/app/ui/dashboard/latest-invoices';
import CardWrapper from '@/app/ui/dashboard/cards';
import { poppins } from '@/app/ui/fonts';
import { Suspense } from 'react';
import {
  IncomeChartSkeleton,
  LatestInvoicesSkeleton,
  CardsSkeleton,
} from '@/app/ui/skeletons';

export default async function Page() {
  return (
    <main className="rounded-xl bg-neutral-900 p-6">
      <h1
        className={`${poppins.className} mb-4 text-center text-xl text-white md:text-3xl`}
      >
        Dashboard
      </h1>
      <div className="grid gap-6 sm:grid-cols-2 lg:grid-cols-4">
        <Suspense fallback={<CardsSkeleton />}>
          <CardWrapper />
        </Suspense>
      </div>
      <div className="mt-6 grid grid-cols-1 gap-6 md:grid-cols-4 lg:grid-cols-8">
        <Suspense fallback={<IncomeChartSkeleton />}>
          <IncomeChart />
        </Suspense>
        <Suspense fallback={<LatestInvoicesSkeleton />}>
          <LatestInvoices />
        </Suspense>
      </div>
    </main>
  );
}

Navigate to app/ui/dashboard/cards.tsx;
Import fetchCardData();
Invoke fetchCardData() inside the <CardWrapper/> component;
Uncomment necessary code.

app/ui/dashboard/cards.tsx

// ...
import { fetchCardData } from '@/app/lib/data';

const iconMap = {
  // ...
};

export default async function CardWrapper() {
  const {
    totalFulfilledInvoices,
    totalAwaitingInvoices,
    numberOfInvoices,
    numberOfSellers,
  } = await fetchCardData();

  return (
    <>
      {/* Attention! Uncomment this section when you reach this stage in the course. */}

      <Card title="Earned" value={totalFulfilledInvoices} type="earned" />
      <Card title="In Progress" value={totalAwaitingInvoices} type="awaiting" />
      <Card title="All Invoices" value={numberOfInvoices} type="invoices" />
      <Card title="Total Sellers" value={numberOfSellers} type="sellers" />
    </>
  );
}

// ...

In Practice

Everything was clear?

Section 5. Chapter 8

Course Content

Next.js 14

1. Introduction

Welcome Project Overview Course Prerequisites How the Course Works

2. Basic Concepts

Project Set Up Project File-Folder Strcture Styling Approaches Adding the Global CSS File Tailwind Styling CSS Modules Conditionally Applying Styles Custom Google Fonts Challenge: Adding Custom Google Font Images

3. Pages and Layouts

How Routing Works Challenge: Creating Page Creating a Common Layout Navigation Optimization Creating Active Links

4. Deployment and Database

Accounts Set Up Project Deployment Project Database Data Population

5. Working with Data

How to Fetch Data Working with the Dashboard Page Practice and Challenge: Retrieving Data Dynamic vs Static Rendering Loaders Specific Parts Loaders Challenge: Skeleton Loader Grouping Components for Loaders

6. Advanced Features

Invoices Page Search Functionality Pagination Server Actions Creating Item Updating Item Deleting Item Challenge: Form Validation

7. Authentication

Understanding Authentication Login Route NextAuth.js Authentication Configuration & Route Protection Password Hashing & Credentials Sign-in Functionality Connecting UI & Functionality Logout Functionality What's Next?