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When appending the querystring post_types = "name of your post type", it displays all the posts. I am using a plugin that has its own custom post type which is restricted (only users that have purchased a membership can view it).. but today while messing around with searching, i discovered that post_types querystring. Is there a way to prevent this private custom type from showing up? are there other similar "magic" querystring in wordpress?

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register_post_type() has quite a few related arguments, of which publicly_queryable controls precisely what you are describing.

However note that it will completely kill the CPT on front end — individual posts, archives, even post previews.

If you want to do this conditionally you'll have to manage this with code from scratch, which might get very involved to do comprehensively.

  • Is ?post_types=mycpt available by default on wp? I turned out that it's the plugin "Search & Filter" that enables this? I am not sure – yeahman Apr 27 '14 at 20:01
  • @yeahman default CPT registration sets public (which includes this, unless specified otherwise) to false. If plugin provides CPT that completely depends on arguments plugin registers it with. – Rarst Apr 27 '14 at 20:11
  • so the query_var ?post_types exists by default on wp? when i disable the "Search and filter" plugin, it displays the homepage when i add the ?post_types querystring – yeahman Apr 27 '14 at 20:29
  • @yeahman hm, actually native query var is post_type (singular). This is probably indeed implemented by plugin and completely up to it. – Rarst Apr 27 '14 at 20:50
  • yup but there's still the issue with ?post_type= lol... are there any other query like this that may reveal "private" posts? (taxonomy maybe?) – yeahman Apr 27 '14 at 20:57

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