[wp-trac] [WordPress Trac] #16096: editing permalink structure in edit site causes 404s on site

[WordPress Trac]

#16096: editing permalink structure in edit site causes 404s on site
---------------------------+-----------------------------
 Reporter:  wpmuguru       |      Owner:
     Type:  defect (bug)   |     Status:  new
 Priority:  normal         |  Milestone:  Awaiting Review
Component:  Network Admin  |    Version:
 Severity:  normal         |   Keywords:  has-patch
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 If you edit a sites permalink structure in the network admin edit site
 screen, the site's rewrite rules do not get updated. The
 permalink_structure option is used to generate the permalinks on the front
 end of the site. Hence the rewrite rules will not match the permalinks
 until the permalink settings screen is visited in the site's dashboard.

 The two alternatives are remove the permalink setting from the edit site
 screen or clear the rewrite rules.

 I'm attaching a patch to clear the rewrite rules. The patch uses
 update_option instead of delete_option because update_option leaves the
 empty option in the object cache. If the option is deleted then WP will
 query the DB, add rewrite_rules to the notoptions cache, generate the
 rules, update the DB & remove rewrite_rules from the notoptions cache.

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Ticket URL: <http://core.trac.wordpress.org/ticket/16096>
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