[wp-trac] [WordPress Trac] #21492: Theme customizer > Static front page: missing error message when front page and posts pages are similar

[WordPress Trac]

#21492: Theme customizer > Static front page: missing error message when front page
and posts pages are similar
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 Reporter:  hd-J                   |       Owner:
     Type:  defect (bug)           |      Status:  new
 Priority:  normal                 |   Milestone:  4.7.3
Component:  Customize              |     Version:
 Severity:  normal                 |  Resolution:
 Keywords:  has-patch ux-feedback  |     Focuses:  ui
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Comment (by MatheusGimenez):

 Replying to [comment:21 westonruter]:
 > @MatheusGimenez it looks like you didn't include `customizer-static-
 front.js` in your patch.
 Sorry. I'm not SVN guy, i guess, hehe.

 Hard to tell exactly what the behavior is from the video, but it looks
 like a user is able to momentarily select the same pages and then after a
 short delay the duplicated setting is cleared out and the `option` is made
 `disabled` so that it cannot be re-selected? This causes an extra refresh
 and it may make the user confused as to why the error message just went
 away on its own.
 >
 > If we want to still allow a user to select an identical page for posts
 as the page on front (for parity with admin screen), we can still allow
 this and make use of the JS notifications API by adding a `warning`
 notification instead of an `error` notification. See
 [https://github.com/xwp/wp-customize-loopconf-workshop-advanced-
 examples/blob/27b128641cdde9c4a8ddc7c366f00e9fef304275/pane.js#L144-L156
 example]. As such there wouldn't be any server-side component at all. I
 know I suggested above the whole disabling of the option and to use
 server-side validation to block the user from being able to save, but
 perhaps in the end a modern iteration on @ocean90's original
 [attachment:21492.patch] would be best, if it was updated to use the new
 JS notifications API.
 >
 > @karmatosed thoughts on the UX? Should we still allow the user to select
 the same page for posts ad page on front, even when we warn them not to?

 I honestly do not know why the message is automatically disappearing after
 a few seconds. First I thought it was some feature of the validation api,
 but with your comment it seems it is not.

 Even if I remove the function that removes the selected option, the
 notification continues to disappear.

 Watch on video:

 https://cloudup.com/crL07SjjxHt

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Ticket URL: <https://core.trac.wordpress.org/ticket/21492#comment:23>
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