How to query posts and users by meta data?

How to query posts and users by meta data?

You’ve learned how to get the values from the fields that store post and user meta data and how to construct queries for posts and users based on meta values. With this knowledge you can are prepared to work with a few custom fields and on your way to using WordPress as a complex content management system.

How to customize your meta data in WordPress?

In order to customize what posts WordPress returns based on meta fields, we need to use WP_Query and specify a meta_query. If, for example, we had a custom post type called ‘films’ that had a custom field called ‘director’ we could query for films whose director was a director of one of the three Star Wars films.

Is there an array of director’s names in a meta query?

Take a look at the code below and see if you can use your mastery of arrays that you gained in the last part to understand what is going on with the meta_query, which I will break down what is going on under the code. As you can see we have an array of director’s names nestled inside of three other arrays. Let’s take it apart, piece by piece.

What can you do with meta query in WordPress?

Working with the WordPress user meta query WordPress has a powerful user meta function that allows developers and plugins to store additional metadata about the registered users in the database. This meta information can be all sorts of different data and attributes that can be used for different purposes.

How to set up user meta fields in WordPress?

Click on Use Template to add it to the form builder. By default, our User Registration Form template includes the following fields, which are mapped to the default user meta fields in WordPress:

How to use WP _ query to display custom post type?

Or perhaps you want to present a wide range of dynamic content with custom fields, images, etc. The powerful WP_Query class makes fetching and outputting your posts on your website a breeze, and we’re about to show you how it’s done!

How to sort posts by multiple meta keys in WordPress?

WordPress doesn’t let you sort posts by multiple custom field values or keys if you’re using a meta_query. With a filter in your (child) theme’s functions.php you can order the posts with a new query parameter meta_query_orderby. The new parameter can be used in WP_Query and pre_get_posts.

Can you store multiple rows of post meta in WordPress?

WordPress permits you to store multiple rows of the same post meta for a single post, so you can get an array of data without needing to serialize it and store it in one key. To do this, you need to slightly change how you’re interacting with the post meta api here.

How to search for a user by Meta key?

Since WP v3.1 it’s ridiculously easy to search for a user by his/her meta key. Explaining the above query, I want only those users who I assigned the role of driver, and they are approved and available. The approved and available are custom fields created using ACF as True/False fields.

How to get post ID by meta value?

The first way that you can retrieve a post’s ID through it’s meta value is by using WP_Query. The only information you really need to know is the meta value for which you’re looking, although it also helps to have the post type handy.

What can you learn from meta data in WordPress?

In this series you’ve been introduced to WordPress meta data and learned some lessons about core PHP concepts along the way. You’ve learned how to get the values from the fields that store post and user meta data and how to construct queries for posts and users based on meta values.

What are the meta keys for WP _ query?

Instead, perhaps code is the better way to do. Let’s say that we have the following two meta keys (to keep it simple): The type of account (be it public or private, for example) that is specified in the `$_POST` submission of the page. Minimum and maximum values for which a given post can have associated with, say, its cost.

What does get post meta do in WordPress?

Here, the get_post_meta function accepts the post ID and the post meta key, while the final option forces it to return a single string. That’s it! Metadata enables you to display post information (such as the author and date) on the front end of your WordPress website.

How to get posts with postmeta in PHP?

I could grab all post data in one query, then grab all relevant postmeta in another, and combine the meta with the post data in one resultset in PHP. Would that end up being quicker than an single ever-more-complex SQL query, if that’s even possible? I always think, “Give as much work as possible to the database.” Not sure on this one!

Is the post meta information cached in memory?

Post meta information is automatically cached in memory for a standard WP_Query (and the main query), unless you specifically tell it not to do so by using the update_post_meta_cache parameter. Therefore, you should not be writing your own queries for this.

How does custom post meta work in WordPress?

See the screenshot below for reference. Post meta works as a system called key/value pairs. The key is a static designation that you assign as the name of your custom field, and how WordPress recognizes this instance of your metadata.

How to query by Meta key in WordPress?

Step 2 You set meta_keyin your query to my_meta_key. 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.

How to query posts in ACF for custom fields?

The WP_Query object is used to query posts and will return an object containing an array of $post objects and many useful methods. The get_posts function makes use of the above WP_Query object, however, it only returns an array of $post objects making it a simpler way to find and loop over posts.