The most frequently asked questions about WordPress are usually about the custom post type (starting from the method of creating a WordPress custom post type) and the custom taxonomy to be discussed today. Custom taxonomy is a core feature introduced in word press 3.0, which can group posts outside of labels and categories. For example, if you are running a book or a movie on a website, you can use the custom category \
In this post, we will learn what a custom taxonomy is, how to use it, and how to create your own. What are the categories, marks, classifications and terms? There is a lot of confusion about the difference between labels and categories and how the taxonomy fits all this. Confusion refers to using the word \
Technically, there is no difference between categories and tags, but the way they are used varies from user-defined. Most people use only a few categories. This makes our website easier to navigate. We usually use tags to add a few for each post. Technically, there is no difference between categories and tags, but the way they are used varies from user-defined. WordPress defines categories as hierarchical categories. This means that a category can be the parent of another category. For example, you can specify art as the top-level category and picture, picture, and painting as subcategories. Labels are non hierarchical. In the administrator, this is reflected in the user interface. The
Categories lists each category and displays in a larger box placed in the correct hierarchy. You can select or deselect to reach the final category structure. Labels are a freer format. You can specify a loose type along with the suggestion, or you can add multiple items using commas. Classifications are defined by topics or plug-ins and can be set to the desired type. According to the example of sports blog, there may be a hierarchical classification of \
You can also use the name of the mentioned athlete as a category to easily list the news items related to this group. To do this, you can create non hierarchical classifications. Terms in this category can be \
Creating a taxonomy requires writing some code, but don’t be afraid. Provides examples of copying and pasting. You can add the code found in this document to three locations. The best place to insert a plug-in. WordPress
You can learn to create plug-ins in Codex. If you use a third-party theme, you must create a sub theme to avoid modifying the theme’s source file. View articles on how to create subtopics. The easiest but least recommended method is the topic’s function. Use PHP files. If you are experimenting, please use this file freely. Note that updating the topic will lose your changes. The
You can easily create classifications using the register_taxonomy() function. The following is a default example: In the load summary 8b3aa667cc980bff22c0a8e042e6d7 WordPress manager, see the following: Simple layering of the back end. This is actually all we have to do to get a complete functional classification. You can change the hierarchical attribute to false to create a non hierarchical classification. Now, let’s create a classification scheme that can assign contestants to posts. The load summary 46a48719507e2aed117f863f9960f10 manager is displayed as follows: The
Simple non hierarchical classification at the back end. Both examples are great, but we can do more. First look at the screenshot and confirm the sentence. Text such as \
The first category tag added to the attribute array is the tag used. This will adjust all text for the category. Load the summary 3d4286dfdb148e149d8446ec6be65dcf. The functions above will replace the original functions. The only one I added is the tag, but because of all the options, this is a fairly large array. In all future examples, we will omit labels for brevity. Classification visibility users may want to view classification schemes, or they may want to use classification schemes only internally. Arguments can control all this in considerable detail. The available parameters and possible values are as follows: The
Public: this parameter sets multiple different parameters at a time. If it is set to true, the classification scheme can be queried publicly, and users can view it at the front end. If set to false, it is only used internally. If set to show_ui:false, the box in the screenshot above will not be displayed. Classifications can be added, searched, and used through code, but not through the user interface. By default, the value of this parameter is the same as the value set for the public parameter. Show_in\nav\menu: if this parameter is set to false, the menu manager part of WordPress will not be able to select terms. By default, the value of this parameter is the same as the value set for the public parameter. Show_tagcloud: this parameter sets whether the tag cloud component can use this classification. By default, the value of this parameter is the same as the value set for the public parameter. If it is set to show\u admin\u column:true, the classification will be displayed in the post list of the attached post type. By default, the value of this parameter is false. Layering I mentioned layering in the opening part. The hierarchy parameter can be set to true or false. By default, the taxonomy is non hierarchical, so the value is set to false.
I think it is a good rule of thumb to use hierarchical classification when using a fixed number of terms that do not change too much over time. Re creating a rule rule may cause more problems than value, so I don’t want to elaborate. However, in some cases, you may need to adjust it, especially when using generic classification names. To use the classification name \
