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How to check if a meta field exists in WordPress?
metadata_exists () | Function | WordPress Developer Resources metadata_exists (string $meta_type, int $object_id, string $meta_key) Determines if a meta field with the given key exists for the given object ID.
How to query by meta value in WordPress?
This tells WordPress to query for posts that have that key. Step 3 Set orderbyin your query to meta_value_num. This tells WordPress to not only query posts with my_meta_key, but to also order numerically by that key. That query argument is the only place you will ever see or use meta_value_num. – MiloApr 25 ’17 at 18:21 2
What does not exists mean in WP query?
NOT EXISTS is just like what it sounds – the meta value isn’t set or is set to a null value. All you need for that query is the key and comparison operator:
How to use’not in’in a meta query?
Using ‘NOT IN’ gets the reverse, any posts that have a value set to anything else than what’s in the array. This will get you all posts where the price is between 20 and 30. This person digs into an example with dates. NOT EXISTS is just like what it sounds – the meta value isn’t set or is set to a null value.
What to do if get _ post _ Meta is empty?
You can use metadata_exists (); (worked for me)for checking for any post meta and the do whatever you want. I found this via searching for a solution myself, but it dawned on me the answer is very simple.
How to check if an object exists in WordPress?
Determines if a meta field with the given key exists for the given object ID. (string) (Required) Type of object metadata is for. Accepts ‘post’, ‘comment’, ‘term’, ‘user’, or any other object type with an associated meta table.
Is the GET POST meta function case sensitive?
Please note that if a db collation is case insensitive (has with suffix _ci) then update_post_meta and delete_post_meta and get_posts () will update/delete/query the meta records with keys that are upper or lower case. However get_post_meta will apparently be case sensitive due to WordPress caching.
How to get the post META array in WordPress?
If the value of the $key parameter is falsy get_post_meta will return the entire post meta array, even if $single is set to true. for example: get_post_meta( $post_id, FALSE, TRUE); //Returns all the post meta fields as an array.
Where to find keywords in a meta query?
Keywords can be found in one or several of the fileds, in any order, it will return any post that has all the keywords in any of the designated fields. You can obiously force the search in a list of meta keys you include in the fonction and get rid of the extra agruments if you want ALL search queries to include these meta keys 🙂
How to use meta query with custom field?
When you call ‘post__in’ you need to set an array of ids and $unique is an array of posts. @satbir-kira answer works great but it will only search through the meta and post title. If you want it to search through meta, title and content, here is the modified version. Here’s another way, just change the request with the ‘posts_where_request’ filter.