[wp-trac] [WordPress Trac] #41857: Walker_PageDropdown doesn't set correct selected value when using value_field

[WordPress Trac]

#41857: Walker_PageDropdown doesn't set correct selected value when using
value_field
-------------------------------+------------------------------
 Reporter:  it4life            |       Owner:
     Type:  defect (bug)       |      Status:  new
 Priority:  normal             |   Milestone:  Awaiting Review
Component:  Posts, Post Types  |     Version:  4.8.1
 Severity:  normal             |  Resolution:
 Keywords:                     |     Focuses:
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Comment (by it4life):

 Replying to [comment:1 birgire]:
 > Welcome to WordPress Trac, @it4life
 >
 > Can you give an example?
 >
 > Not all fields have unique values, like {{{ID}}} and {{{post_name}}}.
 >
 > How should non-unique fields be handled?
 >
 > If the first match is selected, then that would depend on the order -
 that might be problematic.
 >

 Yes, an example is using with `value_field` = `post_name` and it doesn't
 show selected value, as you see the code is only checking selected value
 by `ID`.

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Ticket URL: <https://core.trac.wordpress.org/ticket/41857#comment:2>
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