Скачать или смотреть How to Dynamically Query Custom Post Types in WordPress Using Custom Fields

Learn how to create dynamic WordPress queries for custom post types based on a custom field. This guide walks you through the steps to make your queries adaptable with practical examples.
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This video is based on the question https://stackoverflow.com/q/67859120/ asked by the user 'R-G' ( https://stackoverflow.com/u/1390648/ ) and on the answer https://stackoverflow.com/a/67864372/ provided by the user 'Jpslimmen' ( https://stackoverflow.com/u/10784883/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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How to Dynamically Query Custom Post Types in WordPress Using Custom Fields

WordPress offers incredible flexibility with custom post types, allowing developers to tailor their content management systems according to unique project needs. However, when working with multiple custom post types and needing to display them based on a certain condition—in this case, a custom field— it can get a bit tricky. If you’ve found yourself wanting to adjust your queries based on custom field values, this guide is for you!

The Problem

In this scenario, you have multiple custom post types defined through Toolset Types, like no-9, no-8, and so on. You want to display posts from one of these custom post types on a page that contains a custom field called issue-no. This field should match the name of the custom post type you wish to display. While you initially wrote a query that statically targets no-9, you now need it to be dynamic—changing based on the value of issue-no.

The Initial Query

Your first attempt looked something like this:

[[See Video to Reveal this Text or Code Snippet]]

This works perfectly for displaying posts from no-9, but it lacks the flexibility required for your use case.

The Solution

Instead of hardcoding the custom post type into your query, you can utilize a variable to pull the value of your custom field issue-no dynamically. Here's how you can do it:

Step 1: Define Your Custom Field Variable

First, you’ll need to create a variable that retrieves the current value of the issue-no custom field.

[[See Video to Reveal this Text or Code Snippet]]

Step 2: Modify Your Query

Next, use this variable in your query_posts call:

[[See Video to Reveal this Text or Code Snippet]]

Complete Code Example

Combining both steps, your complete code would look like this:

[[See Video to Reveal this Text or Code Snippet]]

Conclusion

By following these steps, you've created a dynamic query in WordPress that relies on the value of a custom field. This method allows for much more adaptable and maintainable code, especially when dealing with varying custom post types. Embrace the flexibility of WordPress post types and custom fields to enhance your projects further!

If you have any questions or need further assistance, feel free to reach out. Happy Coding!