Is there way to build meta queries with arrays as a meta _ key?

Is there way to build meta queries with arrays as a meta _ key?

Is there a way to build meta queries with arrays as a meta_key ? If the value in the database is a string and you want to feed the query several values:

Are there integers in update _ post _ meta?

To go off of Johannes’ response, since it is a serialized array, if you happen to be storing something like user id’s (which was my case), you may need to handle it a little differently. So yes they are integers but through update_post_meta they were being saved as strings.

Can a relation be cast as an integer in meta _ query?

To fix this, I made a slight tweak to the meta_query by adding a relation and another version of the query that cast the value as an integer instead of a string.

When to search for an array in a database?

If the value in the database is an array of several topics and you want to search for a single topic within that array (Note that an array in the database can be retrieved as such, but lives in the database in serialized form, which is a string also):

Can a user ID be used as an index in an array?

EDIT: Just realized that this method could run the risk of collisions with array indexes, which could allow someone illicit access to materials if they’re not in the array, but their user ID appears as an index.

How to save serialization for WP meta query?

Instead, save serialization for data that you do not intend to query in that nature, but instead would only access in a passive fashion by the direct WP API call get_post_meta () – from that function you can unpack a serialized entry to access its array properties too.

When to return an empty Meta Field in WordPress?

The value of meta data field if $single is true. False for an invalid $user_id. Please note that if the meta value exists but is empty, it will return an empty string (or array) as if the meta value didn’t exist.

What happens if the meta value is empty?

Please note that if the meta value exists but is empty, it will return an empty string (or array) as if the meta value didn’t exist. This might cause unexpected behaviors in your code when you empty the user meta, your code can try to use add_user_meta instead of update_user_meta thinking the user does not have meta created yet.

When to use a meta query in WordPress?

meta_query (array) – Contains one or more arrays with the following keys: key (string) – Custom field key. value (string | array) – Custom field value. It can be an array only when compare is ‘IN’, ‘NOT IN’, ‘BETWEEN’, or ‘NOT BETWEEN’.

How can I select multiple value in meta query-ACF?

@hube2 it’s a checkbox field, return multiple values Querying a checkbox field is similar to querying a relationship field because it stores a serialized array https://www.advancedcustomfields.com/resources/querying-relationship-fields/ @hube2 how can i select multiple value?

Is it safe to add more meta queries?

You should be cautious when adding additional meta queries because the slow down site performance. You must be logged in to reply to this topic. Welcome to the Advanced Custom Fields community forum. Helping others is a great way to earn karma, gain badges and help ACF development!

How to nest a meta query in WP?

The meta_query parameter will actually be transformed into a WP_Meta_Query object, and the relation verification won’t go deeper in wp-includes/meta.php, and occurs just once in the top level: A possible solution for this is to build your own JOIN for this query.

How old is the Meta key in Reddit?

Next to that, your only other option would be retrieving all posts that have the meta_key “topics” set and iterating over them manually or,in other words, check for the value within the loop and display the posts on said condition. Though still valid, the above answer is 9 years old.

How to fix my meta _ query code below?

It has several custom fields, named: TITLE, AUTHOR, GENRE, RATING. How do I fix my meta_query code below so that only books that have the search word in the custom fields: title, author, genre WITH EXACTLY the rating specified in my search form, gets displayed in the results?

What do you call a query with optional parameters?

Queries with optional parameters. These are those queries where you are pulling for, let’s say, a first name, a last name, a state, and/or a city. Simple enough, until you notice that or. We might only get a first name, or a state and the query still needs to work. These queries are commonly called.

How to convert an object to an array?

Approach: By using Object.keys (), we are extracting keys from the Object then this key passed to map () function which maps the key and corresponding value as an array, as described in the below example. obj: It is the object whose enumerable properties are to be returned.

Do you have to give WP an array?

You might be tempted to give WP an array, or to turn it into a comma separated list, but you don’t have to! Post meta keys are not unique, you can store the same key multiple times, e.g.: But how do I get the data back out? Have you ever noticed how calls to get_post_meta have a 3rd parameter that’s always set to true? Set it to false:

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.

How to force search in list of meta keys?

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 🙂 Hope that will help anyone who face the same issue I did! All of the above solutions only return results if a match exists in the speel meta key.

Is it possible to serialize a meta query?

Aside from the costs of partial string searches, post meta queries are slow, and serialised data can change depending on things such as the length of contents, making searching incredibly expensive, if not impossible depending on the value you’re searching for What About LIKE?

How to query multiple meta key values in WordPress?

The queries in the OP will only return posts which have both key1 = ‘value1’ AND key2 = ‘value2’. Most WP plugins (that I know of, anyway) do not store multiple values in postmeta, for the same post, using the same key.

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.

Why is the fourth parameter of post meta called unique?

Add post meta’s fourth parameter is called “unique” because you will provide a boolean value, true or false, indicating whether you want to allow more than one meta key in the databases meta field relative to this post, of the same name as the one provided.

What do you need for a meta query in WordPress?

All you need for that query is the key and comparison operator: This person needed to query non-existent meta values, and needed them to play nice with others. Hope this helps! Note that when using a meta_compare value of ‘LIKE’, WordPress automatically wraps the wildcard character ( % ) around the meta_value string.

How to use the query-meta-query compare operator?

Like this: $meta_value = ‘%’ . like_escape ( $meta_value ) . ‘%’; – see source. IN and NOT IN select any matches that are in (or not in) the given array. So you could do something like this: and it would get all posts that have the color set to either red, green, or blue.

How to add user meta data in WordPress?

Adding or Changing WordPress User Meta Data: update_user_meta() The function for either adding or updating WordPress user meta data is called update_user_meta() , and it looks as follows: update_user_meta( $user_id, $meta_key, $meta_value, $prev_value );

When do you use meta fields in WordPress?

Below are the user meta fields for wpshout.com/author/fred. You use user meta to “know more about your users” than the data they come with by default.

Can you use field keys in a meta box?

You can use it inside a meta box or at the front-end. As of Jan 2020 and WordPress v5.3.2, I confirm the following works fine. It will include the field keys with their equivalent underscore keys as well, but I guess if you properly “enum” your keys in your code, that should be no problem: Hope that helps someone, go make a ruckus!

How to get all post meta keys in PHP?

Note: some unwanted meta keys starting with “underscore (_)” will also come, so you will need to filter them out. To get all rows, don’t specify the key. Try this: Hope it helps! I use it in form of a meta box.

How to select query within a serialized array?

I’m storing a list of items in a serialized array within a field in my database (I’m using PHP/MySQL). I want to have a query that will select all the records that contain a specific one of these items that is in the array. Hopefully that makes sense. Any ideas would be greatly appreciated.

How to find matching records in a serialized array in PHP?

If that’s not possible (or you’re just lazy), you can use the fact that the serialized array is just a big-ole-string, and figure out a LIKE clause to find matching records. The way PHP serializes data is pretty easy to figure out (hint: those numbers indicate lengths of things).

Do you use’like’as the compare value?

Using ‘LIKE’ as the compare value isn’t as clear-cut an instruction as you might have hoped for, but it is the best option to go with.

How to check if a key exists in an array?

Just pass it the key you want to find, and search obj (the object or array) you want to find it in.

What happens if the meta ID does not exist?

(int|bool) Meta ID if the key didn’t exist, true on successful update, false on failure or if the value passed to the function is the same as the one that is already in the database. Changes in behavior from the now deprecated update_usermeta: Update_user_meta does not delete the meta if the new value is empty. The actions are different.

How to work with post meta arrays in worpdress?

Working with post meta arrays. Post meta is data that is associated with a post. A post does not necessarily mean the default blog post type. Worpdress has 5 default post types: Post, Page, Attachment, Revision and Navigation Menu. These, any other custom post types, Comments and Users, all have a post meta table associated to them in the database.

How to combine multiple metadata filters in a query?

To combine several metadata filters in the query, add the additional metadata filters to the array of the strictFilters property. By default, the values are logically combined (AND). A logical combination requires all filters to matches the QnA pairs in order for the pair to be returned in the answer.

Why do you need to query inside a serialized array?

Which is why folks are suggesting you store that data in some normalized fashion, if you need to query “inside” it. If you have control of the data model, stuffing serialized data in the database will bite you in the long run just about always.

What can metadata be used for in QnA maker?

QnA Maker lets you add metadata, in the form of key and value pairs, to your pairs of questions and answers. You can then use this information to filter results to user queries, and to store additional information that can be used in follow-up conversations.

Why do I have multiple meta keys in SQL?

The problem is SQL sees both meta data types as values in one column and will try to order as such, ignoring the keys. The only solutions I see are either post processing in PHP, or placing event-order values somewhere besides meta_value.

How to sort posts by multiple meta keys?

To sort the posts we add the new parameter meta_query_orderby and make sure the values in the value array are in the correct order. If you don’t use the value array (or leave it empty) you can order the posts by meta key only (see the next example).