Cloudflare Developers•11mo ago

[Astro SSG] Why i am redirected after a form submit

Hello, When i submit my form i don't know why i am redirected to the MY_URL.com/api/submit page. I am using Astro (SSG) (V 3.3.4) with Pages (V 8.0.0) and Wrangler (V 3.22.4) What a want to do? - I want to create a simple form. When i submit the form my cloudflare pages function send me an email (with Resend.com api) What is the problem? - Everything is working, when i submit my form it send my an email but i don't want to be redirect from the MY_URL.com/contact to MY_URL.com/api/submit - I have this problem in dev (local) and in deployment I don't understand why i have this redirection (Step 2 in the screenshoot) My code: pages/contact.astro

---
import Layout from '../layouts/Layout.astro';
---

<Layout title='Contact'>
  <form method="POST" action="/api/submit">
    <input type="text" name="name" pattern="[A-Za-z]+" required />
    <input type="email" name="email" required />
    <button type="submit">Submit</button>
  </form>
</Layout>

---
import Layout from '../layouts/Layout.astro';
---

<Layout title='Contact'>
  <form method="POST" action="/api/submit">
    <input type="text" name="name" pattern="[A-Za-z]+" required />
    <input type="email" name="email" required />
    <button type="submit">Submit</button>
  </form>
</Layout>

functions/api/submit.js

export async function onRequestPost(context) {
    return await submitHandler(context);
}

async function submitHandler(context) {
  const body = await context.request.formData();
  const { name, email} = Object.fromEntries(body);

  return fetch('https://api.resend.com/emails', {
    method: 'POST',
    headers: {
      'Content-Type': 'application/json',
      'Authorization': `Bearer ${RESEND_API_KEY}`,
    },
    body: JSON.stringify({
      from: `${MY_EMAIL}`,
      to: [`${email}`],
      subject: 'hello world',
      html: `${name}`,
    }),
  });
}

export async function onRequestPost(context) {
    return await submitHandler(context);
}

async function submitHandler(context) {
  const body = await context.request.formData();
  const { name, email} = Object.fromEntries(body);

  return fetch('https://api.resend.com/emails', {
    method: 'POST',
    headers: {
      'Content-Type': 'application/json',
      'Authorization': `Bearer ${RESEND_API_KEY}`,
    },
    body: JSON.stringify({
      from: `${MY_EMAIL}`,
      to: [`${email}`],
      subject: 'hello world',
      html: `${name}`,
    }),
  });
}

3 Replies

AmineOP•11mo ago

It's work like the exemple her: https://github.com/cloudflare/submit.pages.dev Form page You have the same redirection when you submit the form. I didn't find how to make my function working without this redirect

GitHub

GitHub - cloudflare/submit.pages.dev

Contribute to cloudflare/submit.pages.dev development by creating an account on GitHub.

Befus•11mo ago

i'm not familiar with astro but had the same problem in NextJS, I didn't use the form element and instead made an onclick on my submit button that will fetch to my api. Hopefully this helps you

AmineOP•11mo ago

I think i have fixed my problem, thanks @Befus I thought that it's a problem with my worker /functions/api/submit.js but it was not, it's an Astro problem. Because i was using SSG, if i was using SSR i probably didn't got this redirect.

In SSR mode, Astro pages can both display and handle forms. In this recipe, you’ll use a standard HTML form to submit data to the server. Your frontmatter script will handle the data on the server, sending no JavaScript to the client.

In SSR mode, Astro pages can both display and handle forms. In this recipe, you’ll use a standard HTML form to submit data to the server. Your frontmatter script will handle the data on the server, sending no JavaScript to the client.

Source: Astro doc But i don't want use SSR just for a contact/newsletter form. I think it's possible to do that with SSG, i didn't change anything in functions/api/submit.js file but i did some modifications on my form pages/contact.astro It's look like that:

---
import Layout from '../layouts/Layout.astro';
---

<Layout title='Contact'>
  <form id="contact">
    <input type="text" name="name" pattern="[A-Za-z]+" required />
    <input type="email" name="email" required />
    <button type="submit">Submit</button>
  </form>
</Layout>

<script is:inline>
  const pushForm = async (event) => {
    event.preventDefault()
    try {
      const data = new FormData(event.target);
      
      fetch(`/api/submit`, {
        body: data, method: 'post'
      })
    } catch (error) {
      if (error instanceof Error) {
        console.error(error.message);
      }
    }
  }
document.getElementById("contact").addEventListener("submit", pushForm);
</script>

---
import Layout from '../layouts/Layout.astro';
---

<Layout title='Contact'>
  <form id="contact">
    <input type="text" name="name" pattern="[A-Za-z]+" required />
    <input type="email" name="email" required />
    <button type="submit">Submit</button>
  </form>
</Layout>

<script is:inline>
  const pushForm = async (event) => {
    event.preventDefault()
    try {
      const data = new FormData(event.target);
      
      fetch(`/api/submit`, {
        body: data, method: 'post'
      })
    } catch (error) {
      if (error instanceof Error) {
        console.error(error.message);
      }
    }
  }
document.getElementById("contact").addEventListener("submit", pushForm);
</script>

I don't have redirection or page refresh with this code but i don't know if it's the right way to do it or not

Docs

Build HTML forms in Astro pages

Learn how to build HTML forms and handle submissions in your frontmatter.

Gaming

Programming

[Astro SSG] Why i am redirected after a form submit