React Drag-and-Drop Columns and Items Project

This project implements a drag-and-drop interface using React and react-beautiful-dnd where users can move items between columns and reorder the columns themselves.

Features

• Drag and Drop Items: Users can drag and drop items within a column or move them to other columns.
• Reorder Columns: Users can reorder columns by dragging and dropping them.
• Empty Columns Handling: Columns without items are also droppable, ensuring a smooth user experience.

Prerequisites

Before setting up the project, make sure you have the following installed on your local machine:

• Node.js: Download and install Node.js from nodejs.org.
• npm: Node Package Manager is installed automatically with Node.js.

Installation

1. Clone the Repository

   Clone the project to your local machine using the following command:

   git clone https://github.com/imarjunshrma/DragnDropNextApp.git

2. Navigate to the Project Directory

   cd your-repo-name

3. Install Dependencies

   Install all the required dependencies for the project:

   npm install

Configuration

To ensure that the drag-and-drop functionality works correctly, React's strict mode must be disabled. You can disable it by modifying the next.config.js file in your Next.js project.

1. Open the next.config.js file.

2. Add the following configuration:

   const nextConfig = {
     reactStrictMode: false,
   };
   
   module.exports = nextConfig;

Important: The project will only function correctly if reactStrictMode is set to false. React's strict mode is known to cause issues with the drag-and-drop functionality by performing double rendering of components in development mode, which interferes with the way state updates work in react-beautiful-dnd.

Usage

Once you have installed the dependencies and disabled strict mode, you can start the project locally with:

npm run dev

Then open http://localhost:3000 in your browser to view the drag-and-drop application.

How It Works

• The app allows users to drag items between columns and reorder both items and columns.
• The components are rendered dynamically based on the structure of the data.
• onDragEnd: This function handles both column reordering and item movement within or between columns. The data structure is updated when a drag-and-drop action is completed.

Project Structure

• components/: Contains the reusable UI components for the app.
• utils/: Includes utility functions (if any).
• pages/: Main app entry point.
• next.config.js: Next.js configuration file where strict mode is disabled.