Server action

[chrome flicker]

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

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To convert the given API route file to a Server Action function and show its usage in a page.tsx file in the app router, follow these steps:

Step 1: Convert the API Route to a Server Action

Create a new file app/actions.ts and add the use server directive at the top. Then, move the logic from the API route to this file.

// app/actions.ts
'use server'

import prisma from '@/app/libs/prismadb';

export async function getRegions() {
  try {
    const regions = await prisma.event.findMany({
      select: {
        region: true,
      },
      distinct: ['region'],
    });
    return regions;
  } catch (error: any) {
    throw new Error(error.message);
  }
}

Step 2: Use the Server Action in a Page Component

In your page.tsx file, you can now import and use the getRegions Server Action. Here is an example of how to do this:

// app/page.tsx
import { getRegions } from '@/app/actions';

export default async function Page() {
  const regions = await getRegions();

  return (
    <div>
      <h1>Regions</h1>
      <ul>
        {regions.map((region, index) => (
          <li key={index}>{region.region}</li>
        ))}
      </ul>
    </div>
  );
}

Explanation

1. Server Action Definition: The getRegions function is defined in app/actions.ts with the use server directive, marking it as a Server Action.
2. Usage in Page Component: The getRegions function is imported and used in the Page component. The function is called to fetch the regions, and the result is rendered in a list.

By following these steps, you have successfully converted the API route to a Server Action and used it in a page component.

References

• Server Actions and Mutations - Convention (https://nextjs.org/docs/app/building-your-application/data-fetching/server-actions-and-mutations#convention)
• Server Actions and Mutations - Non-form Elements (https://nextjs.org/docs/app/building-your-application/data-fetching/server-actions-and-mutations#non-form-elements)

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[prime gorge]

@chrome flicker Should we add "use server" always to the top? When we are working in app router, isn't all components considered as server component?

[chrome flicker]

Let me check the knowledge base for you. One moment! :books:

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In the context of the Next.js App Router, not all components are considered Server Components by default. You need to explicitly mark components or functions as Server or Client components using the use server and use client directives.

When to Use use server

The use server directive should be used to mark functions or files as Server Actions. This directive can be placed at the top of an async function or at the top of a file to mark all exports of that file as Server Actions.

Example of use server at the Top of a Function

// app/actions.ts
'use server'

import prisma from '@/app/libs/prismadb';

export async function getRegions() {
  try {
    const regions = await prisma.event.findMany({
      select: {
        region: true,
      },
      distinct: ['region'],
    });
    return regions;
  } catch (error: any) {
    throw new Error(error.message);
  }
}

Example of use server at the Top of a File

// app/actions.ts
'use server'

import prisma from '@/app/libs/prismadb';

export async function getRegions() {
  try {
    const regions = await prisma.event.findMany({
      select: {
        region: true,
      },
      distinct: ['region'],
    });
    return regions;
  } catch (error: any) {
    throw new Error(error.message);
  }
}

When to Use use client

The use client directive is used to mark components as Client Components. This is necessary when you need to use client-side features like state or lifecycle methods.

Example of use client

// app/counter.tsx
'use client'

import { useState } from 'react';

export default function Counter() {
  const [count, setCount] = useState(0);

  return (
    <div>
      <p>You clicked {count} times</p>
      <button onClick={() => setCount(count + 1)}>Click me</button>
    </div>
  );
}