The server-side rendering (SSR) capability of Next.js adds complexity when incorporating certain client-side dependencies in your applications.

In this tutorial, we will build a simple Rich-text editor with Next.js and an NPM dependency called Draft.js. There is scanty information on the topic and it took me a while and a lot of headaches to figure this out on my own.

At the end of this tutorial, give or take, you should set this up in your Next.js application within 4 minutes.

Overview of the tools

• Next.js

• Draft.js and its supporting dependencies

Install Next.js

• Check out the official documentation to set up Next.js if you haven't already.

Configuring Rich Text Editor

Install these packages

• Draft.js & React-draft-WYSIWYG: A React framework for building text editors

• draft-js-export-HTML & draft-js-import-HTML: Packages for serializing content

npm install draft-js react-draft-wysiwyg draft-js-export-html draft-js-import-html

Create an Editor component and import these dependencies.

import { EditorState } from "draft-js";
import dynamic from "next/dynamic";
import { stateToHTML } from "draft-js-export-html";
import { stateFromHTML } from "draft-js-import-html";
import "react-draft-wysiwyg/dist/react-draft-wysiwyg.css"; // for styles

// strictly import the Editor this way for Next.js
const Editor = dynamic(
  () => import("react-draft-wysiwyg").then((module) => module.Editor),
  {
    ssr: false,
  }
);

IMPORTANT.

In Next.js, you can use the dynamic function from the next/dynamic package to load components dynamically, which is useful for components that are not needed during server-side rendering (SSR).

For React.js, import the Editor like this

// FOR React.js ONLY
import { Editor } from "react-draft-wysiwyg";

Rendering a basic Draft.js editor

import { useState } from "react";
import { EditorState } from "draft-js";
import { stateToHTML } from "draft-js-export-html";
import { stateFromHTML } from "draft-js-import-html";
import "react-draft-wysiwyg/dist/react-draft-wysiwyg.css";
import dynamic from "next/dynamic";

const Editor = dynamic(
  () => import("react-draft-wysiwyg").then((module) => module.Editor),
  {
    ssr: false,
  }
);

const MyEditor = () => {
  const [editorState, setEditorState] = useState(() =>
    EditorState.createEmpty()
  );

  const handleChange = (newState) => {
    setEditorState(newState);
  };

  return (
    <div>
      <Editor editorState={editorState} onEditorStateChange={handleChange} />
    </div>
  );
};

export default MyEditor;

Overview of the code

We define a functional component called MyEditor. Within this component, we use the useState hook to create a state variable named editorState and its corresponding setter function, setEditorState. By default, editorState is set to an empty state created with EditorState.createEmpty(). The handleChange function updates the state with the new editor state whenever changes occur.

In the return statement, we render the Editor component provided by the react-draft-wysiwyg package. We pass in the editorState as a prop to display the current content of the editor. Additionally, we provide the onEditorStateChange prop to handle changes made by the user and update the state accordingly.

The editorState == the value prop in HTML <input /> as the onEditorStateChange == onChange prop

If you do everything right and import the component on a page. You should see this.

We are done configuring the editor. We can now use our editor and track every state change.

Finally, let's serialize our content to be able to save and retrieve it from a database like MongoDB, Firebase and what have you.

Serialize content for CRUD operations

The current state of our editor is an object that won't suffice if we want to save and retrieve it from a database. Put console.log(editorState) in the handleChange function and you will see a similar output below.

The changes will be pretty straightforward. We are going to get the current content from the state and convert it to HTML.

Update the handleChange function as follows.

const handleChange = (newState) => {
    setEditorState(newState);
    const contentState = editorState.getCurrentContent();
    const htmlVersion = stateToHTML(contentState);
    console.log(htmlVersion);
  };

// the serialized version is logged in the console on every change

Now, we can pass the htmlVersion as a body to any POST and PATCH request we may need.

If you are fetching the htmlVersion from a database, it has to be converted back to readable text without the HTML tags but with all the styles and properties.

We will use the stateFromHTML to achieve this

  const fetchFromDataBase = async () => {
    // fetch from database using axios or fetchAPI
    const response = axios.get("url");

    const htmlVersion = response.data;

    const textVersion = stateFromHTML(htmlVersion); // converted version

    // update editorstate with converted version
    const  newState = EditorState.createWithContent(textVersion); 
  };

Fixing the refocus error

One significant error with this configuration is that the cursor loses focus unnecessarily and frequently. Let's do a quick fix now. We will move the cursor to the end of the text before updating the editor state.

Add the moveFocusToEnd function to the editor state changes.

const fetchFromDataBase = async () => {
    // fetch from database using axios or fetchAPI
    const response = axios.get("url");

    const htmlVersion = response.data;

    const editorContent = stateFromHTML(htmlVersion); // convert to text
    const newState = EditorState.createWithContent(editorContent); 
    const moveFocusState = EditorState.moveFocusToEnd(newState); // move cursor

    setEditorState(moveFocusState); // update state

  };

Conclusion

Throughout the article, we covered the installation and setup of the necessary dependencies, demonstrated how to dynamically load the React-Draft-Wysiwyg component, and showcased the implementation of a basic editor with state management. Additionally, we discussed how to handle content changes and provided an outline for serialization.

Kindly leave a comment if have any queries and I will attend to them. Thank you!

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