Vimeo undefined

[stmarytx]

WP 4.8.1 with Gutenberg 1.0.0

Issue Overview

When a Vimeo block is added, but no Vimeo link entered, the front end public view is showing "undefined"

Steps to Reproduce (for bugs)

1. Add two text blocks, then a Vimeo block between them
2. Leave the Vimeo URL input blank
3. Publish the post
4. View the published post which contains "undefined" where the Vimeo block should be

Expected Behavior

If a video block URL is left blank, I'd expect nothing to appear for that block - I would just see the block above and the block below, no Vimeo block at all.

Current Behavior

Vimeo block displays "undefined" instead of not appearing.

Possible Solution

On the block display end, first check for a valid video URL. If one doesn't exist, simply do not display the block.

Related Issues and/or PRs

Todos

• Tests
• Documentation

Issue visible on test site at: http://s20923.p221.sites.pressdns.com/2017/a-fancy-news-story/

[aduth]

Somewhat related to discussion of how to handle empty blocks: #1181