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What are custom taxonomies?

What are custom taxonomies? provides you with in-depth training on Design. Taught by Morten Rand-Hen… Show More

Create an Online Portfolio with WordPress

with Morten Rand-Hendriksen

Video: What are custom taxonomies?

What are custom taxonomies? provides you with in-depth training on Design. Taught by Morten Rand-Hendriksen as part of the Create an Online Portfolio with WordPress
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  1. 6m 28s
    1. Welcome
    2. Using the exercise files
      3m 54s
    3. Using the code snippets file
      1m 36s
  2. 8m 31s
    1. What is an online portfolio?
      2m 43s
    2. Tour of the finished project
      3m 15s
    3. Setting up a WordPress development environment
      2m 33s
  3. 16m 10s
    1. Creating site architecture
      5m 1s
    2. Creating a child theme
      6m 7s
    3. Creating an external file to manage functions separately from the theme
      5m 2s
  4. 25m 26s
    1. What is a custom post type?
      2m 14s
    2. Setting up a custom post type
      6m 39s
    3. Adding advanced variables to the custom post type
      3m 35s
    4. Advanced custom post type functionalities
      4m 29s
    5. Changing the menu position of the custom post type
      3m 19s
    6. Adding a custom post type icon
      5m 10s
  5. 22m 8s
    1. What are custom taxonomies?
      3m 34s
    2. Setting up a basic custom taxonomy
      2m 52s
    3. Hooking a custom taxonomy to a post type
      3m 13s
    4. Adding advanced variables to a custom taxonomy
      3m 9s
    5. Using hierarchical and nonhierarchical custom taxonomies
      5m 54s
    6. Using custom taxonomies in admin
      3m 26s
  6. 25m 40s
    1. Populating content into the custom post types
      10m 54s
    2. Uploading videos to YouTube
      2m 22s
    3. Embedding YouTube videos in a custom post type
      4m 23s
    4. Uploading videos to WordPress
      8m 1s
  7. 39m 47s
    1. Creating custom post type templates
      6m 50s
    2. Adding taxonomy info to the custom post type template
      9m 13s
    3. Creating conditional custom taxonomy links
      4m 46s
    4. Handling multiple post type templates: Individual templates
      6m 25s
    5. Handling multiple post type templates: Consolidating everything in one file
      6m 21s
    6. Handling multiple post type templates: Making custom post types the default
      6m 12s
  8. 15m 23s
    1. Creating an index page for a custom post type
      8m 10s
    2. Creating a custom taxonomy index page
      7m 13s
  9. 12m 3s
    1. Creating a custom footer sidebar template
      6m 58s
    2. Displaying a list of links to the latest custom post type posts
      5m 5s
  10. 14m 58s
    1. Creating static pages for the front and the blog
      4m 54s
    2. Populating the menu with new index pages
      4m 52s
    3. Creating a contact page with a contact form
      5m 12s
  11. 5m 55s
    1. Including the abstraction layer in other stock themes
      5m 55s
  12. 1m 22s
    1. Next steps
      1m 22s

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What are custom taxonomies?
Video duration: 3m 34s 3h 13m Advanced


What are custom taxonomies? provides you with in-depth training on Design. Taught by Morten Rand-Hendriksen as part of the Create an Online Portfolio with WordPress

Design Web

What are custom taxonomies?

When I say custom taxonomy, you may very well wonder, what on earth is taxonomy? A taxonomy is a system of classification that allows you to order items into groups or categories. In the regular posts, you have two types of taxonomies: categories and tags. Taxonomies are found everywhere in real life, from libraries to music stores, to the local farmer food stand. A taxonomy is simply a method of grouping and organizing content. So it follows that in WordPress, a custom taxonomy is a new way of organizing content.

WordPress allows for two types of taxonomies. You have the hierarchical taxonomy like Categories. You can see it if we go in and create a new post. You have Categories down here and you can make subcategories of each category. Now we also have non- hierarchical taxonomies, like tags. Tags live on their own and you can stack multiples next to one another. These are used for different purposes. Which one works better for your type of organization depends on what kind of information is gathered.

This is easier to explain if we'd look at our example project. Under the Culinary Artistry website, we have a large set of different taxonomies. Some that span multiple post types and some that are individual. If you look at them we have of course under Blog, the standard Categories and Tags. Under Recipes, we have Meal Type, which is to indicate things like dinner, desert, lunch ,and so on. We have Ingredients, we have Difficulty level, and you have Time and Portions. Now of the five of these, one should be non-hierarchical.

Can you guess which one? It should be the Ingredients. That's simply because when you insert Ingredients, you are really just inserting a long list of different items that don't really have a relation to one another. It's hard to say that, for instance, bananas relate to tomatoes in a certain way. Whereas Meal type, Difficulty, Time and Portions actually can relate to each other. You can say you could have time, one to two hours, and under there you can have a more specific time like an hour and 40 minutes, or under Meal Type you could say, dinner, and then under there you could have appetizer, main course, stuff like that.

We also see that we have some taxonomies to work across all the new post types while others are individual for them. That's because each individual post type might have specific sorting systems that don't apply to the other ones. This also becomes clear if we think about other types of items. Let's say you make a website that's about cars and motorcycles. Then under both cars and motorcycles you may have a taxonomy called Mak, that defines what make the car or motorcycle is, and many companies make both, so therefore,it should go across both. Whereas if you have one that's called Model, then maybe each should be its own taxonomy, because the models for cars are quite different from the models for motorcycles.

Choosing what taxonomy is to use really depends more on what kind of content you are sorting and how you want to sort it than it does what can and can you not do in WordPress. The basic premise is you can add as many taxonomies you want, you can apply them in any post type, including the original blog post types, and you can apply them in any way you want. It's simply a matter of how you set it up. By adding custom taxonomies to your custom post types, you add the ability to sort the content and find what you're looking for easier. Understanding the difference between hierarchical and non-hierarchical taxonomies, and when to use each can make the site easier to navigate both for administrators and for visitors.

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