facebookarchive/draft-js

`aliasedElements` array not working for pasted elements

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#1,842 opened on Aug 23, 2018

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help wanted

Description

Do you want to request a feature or report a bug? Bug

What is the current behavior? When setting aliasedElements in my blockRenderMap, pasted elements do not use the block they are aliased under. I want to only allow h1 and h2 and for all other heading elements to render as h2, but they are rendering as unstyled / .

const blockRenderMap = Immutable.Map({
	'header-one': {
		element: 'h1',
	},
	'header-two': {
		element: 'h2',
		aliasedElements: ['h3', 'h4', 'h5', 'h6'],
	},
	unstyled: {
		element: 'p',
		aliasedElements: ['pre'],
	},
});

See docs here; https://draftjs.org/docs/advanced-topics-custom-block-render-map.html#configuring-block-render-map

If the current behavior is a bug, please provide the steps to reproduce and if possible a minimal demo of the problem. I have reproduced the problem here https://jsfiddle.net/m6z0xn4r/1250/

What is the expected behavior? Any pasted h3, h4, h5, h6 should render as h2.

Which versions of Draft.js, and which browser / OS are affected by this issue? Did this work in previous versions of Draft.js? Happening on Chrome, Firefox and Safari for mac. I believe the above jsFiddle is the latest version?

Contributor guide

Tech stack
javascriptreact
Domain
frontend
Issue type
bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
Basic understanding of Draft.js block rendering
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
30
Research direction
The issue is that the aliasedElements property in the blockRenderMap is not respected during paste. This likely involves the Draft.js core paste handler logic, possibly in the DraftEditorPasteHandler module. The code reference for block render map configuration is in the Draft.js documentation. Since the repository is archived (facebookarchive), no further official development is expected, but the bug could be explored for educational purposes.