#Flipping shadcn chevron on click of parent group

1 messages · Page 1 of 1 (latest)

mild field
#

<DropdownMenuTrigger className="peer text-[#111827] items-center flex flex-row font-medium text-sm uppercase transition-colors hover:text-[#8b0000] px-3 py-2">
L'établissement
<ChevronDown size={16} className="mr-1 transition-transform duration-200 peer-data-[state=open]:rotate-180" />
</DropdownMenuTrigger>

flip chevron on click of dropdownmenutrigger

ebon lionBOT
#

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

#

Based on your code snippet, it looks like you're trying to rotate a ChevronDown icon when a DropdownMenuTrigger is clicked in a NextJS application.

You're actually on the right track with your current implementation. The code you've provided is using the peer modifier from Tailwind CSS along with a data state selector to handle the rotation of the chevron icon when the dropdown is opened.

In your code:

<ChevronDown size={16} className="mr-1 transition-transform duration-200 peer-data-[state=open]:rotate-180" />

The peer-data-[state=open]:rotate-180 class is designed to rotate the chevron 180 degrees when the peer element (your DropdownMenuTrigger) has a data-state attribute with the value "open".

This approach is correct and should work as expected with the shadcn UI components, which automatically handle the state changes and apply the appropriate data attributes when the dropdown is opened or closed.

If you're experiencing issues with this implementation, make sure that:

  1. You're using the latest version of shadcn's dropdown menu component
  2. The peer modifier is properly configured in your Tailwind CSS setup
  3. The DropdownMenuTrigger component is correctly applying the data-state attribute when clicked

For more detailed information about styling in NextJS, you can refer to the documentation on applying styles which demonstrates various approaches to styling components.

Note: you can ask me a follow up question by @ mentioning me again :speech_balloon:

#

@mild field Kapa.ai is still learning and improving, please let me know how I did by reacting below.

mild field
#

how to properly configure it

#

@ebon lion how to properly configure it

ebon lionBOT
#

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

#

Based on your previous question about flipping the shadcn chevron, I understand you're asking about properly configuring Tailwind CSS in a Next.js project to ensure the peer modifier works correctly. Let me explain how to set this up:

Configuring Tailwind CSS in Next.js

Installing Tailwind CSS

First, install the necessary packages:

npm install -D tailwindcss @tailwindcss/postcss postcss

Setting up PostCSS Configuration

Create a postcss.config.mjs file in the root of your project:

/** @type {import('tailwindcss').Config} */
export default {
  plugins: {
    '@tailwindcss/postcss': {},
  },
}

Importing Tailwind Styles

For Next.js with the App Router, add this to your app/globals.css file:

@import 'tailwindcss';

Then import this CSS file in your root layout:

// app/layout.tsx
import './globals.css'

export default function RootLayout({
  children,
}: {
  children: React.ReactNode
}) {
  return (
    <html lang="en">
      <body>{children}</body>
    </html>
  )
}

For Pages Router, add the import to your styles/globals.css and import it in pages/_app.tsx:

// pages/_app.tsx
import '@/styles/globals.css'

Ensuring Peer Modifiers Work

For your specific chevron rotation case, the peer modifier should work as long as:

  1. The peer class is on your trigger element
  2. The element you want to style (the chevron) is a sibling of the peer element
  3. You're using the correct data attribute selector

Your current implementation looks correct:

# 
<DropdownMenuTrigger className="peer text-[#111827] items-center flex flex-row font-medium text-sm uppercase transition-colors hover:text-[#8b0000] px-3 py-2">
  L'établissement 
  <ChevronDown size={16} className="mr-1 transition-transform duration-200 peer-data-[state=open]:rotate-180" />
</DropdownMenuTrigger>

If you're experiencing issues, it might be because Tailwind CSS v4 has a different configuration approach than v3. As noted in the Next.js documentation, Tailwind v4 requires minimal configuration by default, but you can follow the official Tailwind documentation for custom configurations.

There's also an open issue regarding outdated Tailwind documentation in Next.js for the v4 release, as mentioned in this GitHub issue.

Note: you can ask me a follow up question by @ mentioning me again :speech_balloon:

#

@mild field Kapa.ai is still learning and improving, please let me know how I did by reacting below.

mild field
#

@ebon lion its not working

ebon lionBOT
#

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

#

I understand that the Tailwind CSS peer modifier for your chevron rotation isn't working as expected. Based on the knowledge sources, there could be several reasons for this issue:

Possible Issues

  1. HMR (Hot Module Replacement) Issues: There's a known issue with Tailwind CSS reloading in Next.js 14, as described in this GitHub issue. CSS changes might not be properly applied during development.

  2. CSS Minification Problems: There could be issues with CSS minification during builds, especially if you're using Tailwind v4 with Next.js, as noted in another GitHub issue.

  3. Incorrect Selector Syntax: The CSS parser in Turbopack (if you're using --turbo) is stricter than webpack and might reject certain selectors that would otherwise be ignored.

Troubleshooting Steps

  1. Try using Turbopack: Several users reported that using --turbo flag fixed their Tailwind CSS issues:

    npm run dev -- --turbo

    Multiple users confirmed this workaround.

  2. Check your Tailwind configuration: Make sure your configuration is compatible with the version you're using. If you're using Tailwind v4, the syntax has changed from v3.

  3. Verify the HTML structure: The peer modifier only works when the element you want to style is a sibling of the element with the peer class. In your case, the ChevronDown appears to be a child of the DropdownMenuTrigger, not a sibling, which might be causing the issue.

  4. Try alternative approaches:

    • Use a state variable to track the dropdown open state
    • Use a different selector approach that doesn't rely on peer modifiers

  5. Clear cache and rebuild:

    • Delete the .next folder
    • Run npm run dev again
#

If you continue to experience issues, you might want to consider sharing a more complete code example or creating a minimal reproduction repository to help identify the specific problem.

Would you like me to suggest an alternative approach to rotating the chevron that doesn't rely on the peer modifier?

Note: you can ask me a follow up question by @ mentioning me again :speech_balloon:

#

@mild field Kapa.ai is still learning and improving, please let me know how I did by reacting below.

mild field
mild field
#

@ebon lion exactly, hwo to do it with parent

ebon lionBOT
#

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

#

I understand you're looking for a way to rotate the chevron when the parent element is clicked, without relying on the peer modifier. Based on the issues you're experiencing, here's an alternative approach using parent-child relationships in Tailwind CSS with Next.js:

Using the group Modifier Instead of peer

The group modifier in Tailwind CSS is designed for styling children based on the parent's state, which is exactly what you need here:

<DropdownMenuTrigger className="group text-[#111827] items-center flex flex-row font-medium text-sm uppercase transition-colors hover:text-[#8b0000] px-3 py-2">
  L'établissement 
  <ChevronDown size={16} className="mr-1 transition-transform duration-200 group-data-[state=open]:rotate-180" />
</DropdownMenuTrigger>

Key changes:

  1. Replace peer with group on the parent element
  2. Replace peer-data-[state=open] with group-data-[state=open] on the child element

This approach works because:

  • The group modifier marks the parent element
  • The group-data-[state=open] targets the child when the parent has the specified data attribute

If you're still experiencing issues with Tailwind CSS in Next.js, there might be underlying configuration problems as mentioned in our previous conversation. Some users have reported CSS issues with certain Next.js versions, particularly with CSS modules and Tailwind's preflight styles overwriting module CSS, as noted in this GitHub issue.

Would you like me to suggest any additional troubleshooting steps if this approach doesn't resolve your issue?

Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: