[wp-trac] [WordPress Trac] #41972: Add Import/Export functionality to the Customizer

[WordPress Trac]

#41972: Add Import/Export functionality to the Customizer
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 Reporter:  philclothier  |       Owner:
     Type:  enhancement   |      Status:  new
 Priority:  normal        |   Milestone:  Awaiting Review
Component:  Customize     |     Version:  4.8.2
 Severity:  normal        |  Resolution:
 Keywords:                |     Focuses:  ui
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Comment (by westonruter):

 cf. [https://core.trac.wordpress.org/ticket/39896#comment:87 my comment]
 on #39896:

 > It is trivial to implement an export feature because it's simply a
 matter of exporting the contents of the `customize_changeset` post. Well,
 and any posts that may be referenced in that changeset.
 >
 > The hard thing is importing a changeset. Settings for widgets and nav
 menus all make reference to auto-incremented IDs in their settings, and so
 importing a changeset would run the real risk of conflicting with existing
 changes on a given site. Importing a changeset in a way that does not
 conflict with existing content is what the starter content feature was
 designed to solve: #38114.
 >
 > In order to export and import a changeset, it would essentially need to
 be able to “understand“ the structure of the IDs (e.g.
 `nav_menu_item[123]` and the structure of the values, like when
 `page_on_front` is set to `4`, that the `123` in the former and the `4` in
 the latter are both references to post IDs. It's the same problem you get
 when trying to migrate parts of a database from one site to another
 existing database. This is a problem that [https://versionpress.net/
 VersionPress] has been focused on heavily as well as
 [https://mergebot.com/ Mergebot]. There may be a way to leverage schema
 work done by these projects as a way to inform a changeset import/export
 tool. But it would be out of scope for this ticket.

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Ticket URL: <https://core.trac.wordpress.org/ticket/41972#comment:1>
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