I am using multiple loops to grab certain categories ordered by RAND. The problem is when I put things in more than 1 category there can be duplicate results across the loops.
Is there a way to stop this from happening or not?
[resolved] Order by rand with no duplicates (8 posts)
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gashface
Posted 8 months ago # -
Possibly, you could grab the ids in the first query and add them to the post__not_in argument of the second?
http://codex.wordpress.org/Class_Reference/WP_Query#Post_.26_Page_Parameters
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Posted 8 months ago #[code moderated - please follow the forum guidelines for posting code]
So how would this work with this code?
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how to avoid duplicates:
http://codex.wordpress.org/The_Loop#Multiple_Loops_in_Action
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Posted 8 months ago #Hi there. I am doing this, but it is still not working, any help?
I think maybe because this is assuming you're getting the posts from the same category whereas I need to get them from two seperate ones, but were a post is in both, make sure only it is displayed once from one category?
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Posted 8 months ago #Ok I've managed to get it working, but occasionally my second loop only gets 2 posts instead of 3, any ideas?
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that does happen with the 'continue' method, because the code grabs 3 posts and then 'jumps over' any duplicates;
there is the other method (also described in here http://codex.wordpress.org/The_Loop#Multiple_Loops_in_Action ) which is using 'post__not_in';
see:
http://pastebin.com/fjSZB9aQ(btw: make sure to use the category slug (not the category title) with the 'category_name' parameter http://codex.wordpress.org/Class_Reference/WP_Query#Category_Parameters )
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Posted 8 months ago #Thankyou that worked perfectly and I've changed to slugs (:
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