Скачать или смотреть How to Write a Custom Query in WordPress for Fetching Dynamic Taxonomy-Filtered Custom Post Types

Learn how to create a custom query in WordPress to fetch filtered custom post types using dynamic taxonomy. Perfect for beginners!
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Crafting Dynamic Taxonomy Queries in WordPress

If you're a graphic designer diving into the world of WordPress and you find yourself needing to create custom queries, you're not alone! Many users, especially those with limited coding experience, can feel overwhelmed when faced with this challenge. In this guide, we'll walk you through the steps to write a custom query in WordPress that fetches custom post types filtered by a dynamic taxonomy.

The Challenge: Understanding Your Setup

In your scenario, you have two custom post types (CPTs): Projects and Designs. The Projects CPT serves as a taxonomy for the Designs CPT, meaning you can group several designs under a specific project. For instance, designs made for "New Coca Identity" can all be associated with that project, allowing for easy retrieval when on the relevant project page.

Tools Required

WordPress with Elementor Pro

CPT-UI: For creating custom post types

CPT-onomies: To utilize a CPT as a taxonomy for another CPT

Snippets Plugin: To allow for custom code insertion

The Solution: Creating Your Custom Query

Let's break down the solution to achieve your goal of fetching Designs associated with a specific Project dynamically.

Step 1: Create the Action Hook

You’ll need to create a function to initiate your custom query using the add_action function. The following code snippet outlines this process:

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

Step 2: Fetch Current Post ID

Using get_the_ID(), you retrieve the ID of the CPT currently in the loop (in your case, this is a Project). This ID is crucial, as it allows us to filter the Designs CPT based on the specific Project being viewed.

Step 3: Prepare Your Meta Query

Next, you’ll need to set up a meta query that helps filter the Designs CPT based on the Project ID:

post_type: Define that we’re looking for the designs custom post type.

taxonomy: Specify the taxonomy we’re filtering by, which is projects.

value: Use the previously retrieved $post_id to filter by the current project's ID.

compare: Set to in to ensure you’re checking against the correct taxonomy terms.

Final Touch: Setting Your Query

After preparing the meta query, set it to the existing query using $query->set(). This step connects the dots and tells WordPress to return only the Designs related to the current Project.

Conclusion: Success!

By implementing the above code in your Snippets plugin, you can create dynamic queries that fetch your custom post types based on the taxonomy specified. Not only does this enhance user experience, but it also gives you the flexibility to manage your content effectively.

Remember, it's perfectly fine to ask for help or search for resources if you're new to PHP and WordPress development. Every developer, no matter their skill level, started somewhere!

With the knowledge you’ve gained here, you're now equipped to tackle similar challenges head-on. Happy coding!