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Creating Drag-and-Drop Features with Vue and Gutenberg

Posted on January 5, 2025

Building Drag-and-Drop Experiences with Vue and Gutenberg: A Comprehensive Guide

Drag-and-drop functionality has become a staple of intuitive user interfaces. Whether it’s rearranging items in a to-do list or building complex layouts with page builders, the ability to manipulate elements visually significantly enhances user experience. In this blog post, we’ll delve into creating drag-and-drop features using the power of Vue.js and WordPress’s Gutenberg editor. We’ll cover both integrating a Vue-based drag-and-drop component within a Gutenberg block and building a full-fledged, standalone Vue application that leverages Gutenberg’s principles for a rich editing experience.

Part 1: Integrating Vue Drag-and-Drop into a Gutenberg Block

This section focuses on building a simple Gutenberg block that allows users to drag and drop items within a predefined container. We’ll use a popular Vue drag-and-drop library, vuedraggable, for ease of implementation.

1. Setting up the Project:

First, create a new WordPress plugin. Let’s call it vue-gutenberg-dnd. Inside the plugin directory, create a src directory for our Vue component and a build script to handle compiling the Vue code.

2. Project Structure:

vue-gutenberg-dnd/
├── gutenberg-block.js  // Gutenberg block registration
├── src/
│   └── MyDragAndDrop.vue // Vue component
└── webpack.config.js    // Webpack configuration
└── package.json         // Dependencies

3. package.json:

{
  "name": "vue-gutenberg-dnd",
  "version": "1.0.0",
  "description": "A Gutenberg block with Vue drag-and-drop",
  "main": "gutenberg-block.js",
  "scripts": {
    "build": "webpack --mode production"
  },
  "devDependencies": {
    "vue": "^3.3.4",
    "vuedraggable": "^4.0.0",
    "webpack": "^5.88.2",
    "webpack-cli": "^5.1.4"
  }
}

4. webpack.config.js:

const path = require('path');

module.exports = {
  entry: './src/MyDragAndDrop.vue',
  output: {
    path: path.resolve(__dirname, 'dist'),
    filename: 'my-drag-and-drop.js',
  },
  module: {
    rules: [
      {
        test: /.vue$/,
        loader: 'vue-loader'
      },
      {
        test: /.css$/,
        use: ['style-loader', 'css-loader']
      }
    ]
  },
  resolve: {
    extensions: ['.js', '.vue'],
    alias: {
      'vue$': 'vue/dist/vue.esm.js' // required to avoid conflicts with other vue versions
    }
  }
};

5. src/MyDragAndDrop.vue:

<template>
  <div class="my-dnd-container">
    <draggable v-model="items" @end="onDragEnd">
      <div v-for="(item, index) in items" :key="index" class="dnd-item">
        {{ item }}
      </div>
    </draggable>
  </div>
</template>

<script>
import draggable from 'vuedraggable';

export default {
  components: {
    draggable
  },
  data() {
    return {
      items: ['Item 1', 'Item 2', 'Item 3']
    };
  },
  methods: {
    onDragEnd(evt) {
      console.log('Drag end:', evt);
      // Save the updated items array to WordPress
      // This involves using the WordPress API or a custom action
    }
  }
};
</script>

<style scoped>
.my-dnd-container {
  border: 1px solid #ccc;
  padding: 10px;
}
.dnd-item {
  background-color: #f0f0f0;
  padding: 5px;
  margin-bottom: 5px;
  cursor: move;
}
</style>

6. gutenberg-block.js:

wp.blocks.registerBlockType('my-plugin/my-dnd-block', {
  title: 'My Drag & Drop Block',
  icon: 'align-wide',
  category: 'common',
  edit: function(props){
    const MyDragAndDrop = wp.element.createElement(window.MyDragAndDrop);
    return MyDragAndDrop;
  },
  save: function(props) {
    //This is a placeholder, actual saving logic needs to be implemented
    return null;
  }
});

// Load the compiled Vue component
import('./dist/my-drag-and-drop.js').then(module => {
  window.MyDragAndDrop = module.default;
})

Part 2: Building a Standalone Vue Application with Gutenberg-like Functionality

This section outlines creating a complete Vue application with drag-and-drop features mimicking the core functionality of the Gutenberg editor. This requires a more sophisticated approach, employing a state management system (like Vuex) and potentially a custom drag-and-drop library offering more control over the drag-and-drop process.

1. Project Setup (using Vue CLI):

vue create vue-gutenberg-clone
cd vue-gutenberg-clone

2. Adding Dependencies:

Install necessary dependencies (Vuex for state management, a suitable drag-and-drop library like sortablejs, and potentially a UI library like Element UI or Vuetify for pre-built components):

npm install vuex sortablejs element-plus

3. Vuex Store:

Your Vuex store will manage the block data, allowing for efficient updates and persistence:

// store/index.js
import Vue from 'vue'
import Vuex from 'vuex'

Vue.use(Vuex)

export default new Vuex.Store({
  state: {
    blocks: []
  },
  mutations: {
    ADD_BLOCK(state, block){
      state.blocks.push(block)
    },
    UPDATE_BLOCK(state, {index, updatedBlock}){
      state.blocks.splice(index, 1, updatedBlock)
    },
    REMOVE_BLOCK(state, index){
      state.blocks.splice(index, 1)
    },
    REORDER_BLOCKS(state, blocks){
      state.blocks = blocks;
    }
  }
})

4. Drag-and-Drop Component:

This component would use sortablejs to handle the drag-and-drop logic and interact with the Vuex store to update the block order. It will likely involve rendering individual block components within a container and triggering mutations in the Vuex store when the drag event concludes.

5. Individual Block Components:

You would create individual Vue components for different block types (paragraph, image, heading, etc.). These components would handle their specific rendering and editing functionalities.

6. Saving and Loading:

Implement mechanisms to save the block data (using local storage, a backend API, or other persistent storage methods) and load it when the application starts. This involves serialization and deserialization of the block data.

Conclusion:

Building drag-and-drop functionality with Vue and Gutenberg opens a world of possibilities for creating rich and interactive editing experiences. While integrating Vue into a Gutenberg block is relatively straightforward, building a full-fledged clone requires a more comprehensive architecture. This guide provides a solid foundation for both approaches, guiding you through the crucial steps and considerations involved in crafting powerful drag-and-drop features within your WordPress environment. Remember to handle data persistence, error handling, and thoroughly test your components to ensure stability and robustness in a real-world application. This advanced example requires more detailed code snippets which are beyond the scope of a single blog post, but this blueprint should provide a solid starting point for your development. Remember to consult the documentation for vuedraggable, sortablejs, Vuex, and your chosen UI library for detailed usage instructions.

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