Draft js. Persist EditorContent to database

问题

I'm trying to persist draft-js's EditorContent to database then read and recreate the EditorContent object again. But EditorContent.getPlainText() strips away rich text content. I don't know how else to do it.

How do I properly persist EditorContent?

回答1:

The getPlainText() method, as its name suggests, only returns the plain text without any rich formatting. You should use the convertToRaw() and convertFromRaw() functions to serialize and deserialize the contents of the editor.

You can import them this way if necessary: (assuming you are using ES6)

import {convertFromRaw, convertToRaw} from 'draft-js';

If you need to export HTML instead, see https://medium.com/@rajaraodv/how-draft-js-represents-rich-text-data-eeabb5f25cf2#9260 (not sure you can import the contents back from HTML, though)

回答2:

I've found that I must stringify and parse the RawContentState object when reading and saving to the database.

import { convertFromRaw, convertToRaw } from 'draft-js';

// the raw state, stringified
const rawDraftContentState = JSON.stringify( convertToRaw(this.state.editorState.getCurrentContent()) );
// convert the raw state back to a useable ContentState object
const contentState = convertFromRaw( JSON.parse( rawDraftContentState) );

回答3:

To persist

const contentStateJsObject = ContentState.toJS();
const contentStateJsonString = JSON.stringify(contentStateJS);

now content state can be persisted as JSON string.

To recreate ContentState

const jsObject = JSON.parse(jsonString);
const contentState = new ContentState(jsObject);

回答4:

There are a bunch of useful answers here so I want to add this jsfiddle demo. It shows how it works in action. For saving and retrieving of the content of the editor, here local storage is used. But for database case, the basic principle the same.

In this demo, you can see simple editor component, when you click on SAVE RAW CONTENT TO LOCAL STORAGE, we save current editor content as a string to local storage. We use convertToRaw and JSON.stringify for it:

 saveRaw = () => {
  var contentRaw = convertToRaw(this.state.editorState.getCurrentContent());

  localStorage.setItem('draftRaw', JSON.stringify(contentRaw));
}

If after that you reload the page, your editor will be initialized with the content and styles what you save. Becouse of in constructor we read the appropriate local storage property, and with JSON.parse, convertFromRaw and createWithContent methods initialize editor with the previously stored content.

constructor(props) {
  super(props);

  let initialEditorState = null;
  const storeRaw = localStorage.getItem('draftRaw');

  if (storeRaw) {
    const rawContentFromStore = convertFromRaw(JSON.parse(storeRaw));
    initialEditorState = EditorState.createWithContent(rawContentFromStore);
  } else {
    initialEditorState = EditorState.createEmpty();
  }

  this.state = {
    editorState: initialEditorState
  };
}

来源：https://stackoverflow.com/questions/36499858/draft-js-persist-editorcontent-to-database

标签

javascript

reactjs

draftjs