If we think of WordPress as a content warehouse<\/strong>, “Post type” can be considered as the \u2018types of content boxes\u2019 within the warehouse. WordPress internally distinguishes and uses Post Types as follows.<\/p>\n\n\n\n At the most basic level, it divides into “Page” and “Post”, where “Page” is used to store HTML code for web pages, and “Post” is used for the purpose of storing typical ‘articles’ that express content between the Header\/Footer design of a webpage, such as blogs and articles. If you install WooCommerce to operate a shopping mall with WordPress, you define and use an additional Post Type called ‘product’.<\/p>\n\n\n\n Isn’t it a question whether site operators or developers can define Post Types for other purposes? You can define and use Post Types for other purposes, and this is called ‘Custom Post Type (CPT)’.<\/p>\n\n\n\n Basic WordPress provides two types of content: \ud83d\udccc Examples:<\/p>\n\n\n\n Web developers can define it in various ways. CPT uses the database structure that WordPress uses for data storage, simply distinguishing the values recorded in the post_type field of the wp_posts table as ‘page’, ‘post’, ‘attachment’, etc.<\/p>\n\n\n\n Usually, you can use a well-made plugin. At COOSS.NET, we easily define Custom Post Types using Crocoblock<\/strong><\/a>‘s JetEngine<\/strong><\/a>.<\/p>\n\n\n\n For example, at COOSS.NET, we have designated ‘AI trading opinions on coins’ as a separate Post Type named ‘buysell-coin’. The purpose is to display it differently from ordinary articles, such as [ BTC AI Trading – Reasons for Buy\/Sell\/Hold Decision on 2025-03-28<\/a> ]<\/strong>, and it’s also more manageable as a separate Post Type.<\/p>\n\n\n\n Below is the dialog box for defining CPT in JetEngine<\/strong><\/a>.<\/p>\n\n\n\n <\/p>\n\n\n\n <\/p>\n\n\n\n In this article, we will take a deeper look at the “Register Query Var” and “Rewrite” settings when setting up Custom Post Types (CPT).<\/p>\n\n\n\n Register Query Var<\/strong> connects with WordPress’s internal query system. It allows identifying or filtering post types through specific variables in the URL query string.<\/p>\n\n\n\n When this option is activated, it becomes possible to retrieve CPT via URL requests.<\/p>\n\n\n\n For example, you can display posts in the following address format by adding a query variable after the ?.<\/p>\n\n\n\n Taking COOSS.NET as an example, addresses in the following form will also work. (Click to see).<\/em><\/p>\n\n\n\n When Register Query Var is activated:<\/p>\n\n\n\n It can be called in PHP code as follows,<\/p>\n\n\n\n If deactivated, you will not be able to use query variables for that post type, making direct queries through URL or WP_Query impossible. Generally, if the CPT can only be accessed through REST API, registering query_var may not be necessary.<\/p>\n\n\n\n Rewrite<\/strong> options are used to generate easily memorable URLs. This provides a URL structure that is friendly to both search engines and users.<\/p>\n\n\n\n For example, when the Rewrite setting is activated, you can also access the post with the following path.<\/p>\n\n\n\n If there is no Rewrite setting, you will have to use URLs like `https:\/\/domain.com\/?post_type=post_type_slug&p=post_id` by default, which is disadvantageous from a search engine optimization perspective.<\/p>\n\n\n\n At COOSS.NET, we initially did not activate this option. However, upon seeing the indexed pages in search engines, we noticed that search engines were recording them as ‘https:\/\/domain.com\/post_type_slug\/post_slug`. When we clicked this address, WordPress could not recognize it, displaying an error message indicating that the page does not exist. Now, by also activating the Rewrite setting, both query-type addresses and the addresses indexed by search engines are outputting correctly.<\/em><\/p>\n\n\n\n <\/p>\n\n\n\n\n
post<\/code> = Blog post box<\/li>\n\n\n\npage<\/code> = Static information (introduction\/inquiry, etc.) box<\/li>\n\n\n\nattachment<\/code> = Image or file box<\/li>\n\n\n\nproduct<\/code> = Shopping mall product box (e.g., WooCommerce)<\/li>\n\n\n\nmovie<\/code> = Movie information box (custom CPT)<\/li>\n<\/ul>\n\n\n\nWhat is Custom Post Type<\/h2>\n\n\n\n
Why is it needed? (Why)<\/h3>\n\n\n\n
Post<\/code> and Page<\/code>. However, in the following cases, this may not be sufficient:<\/p>\n\n\n\n\n
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Who uses it? (Who)<\/h3>\n\n\n\n
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When is it used? (When)<\/h3>\n\n\n\n
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How to define it<\/h3>\n\n\n\n
![\"\"](\"https:\/\/cooss.net\/wp-content\/uploads\/2025\/03\/image-14.png\" "\\"\\"")
<\/figure>\n\n\n\nUnderstanding JetEngine’s Post Type Settings<\/h2>\n\n\n\n
![\"\"](\"https:\/\/cooss.net\/wp-content\/uploads\/2025\/03\/image-15.png\" "\\"\\"")
<\/figure>\n\n\n\nWhat is Register Query Var?<\/h3>\n\n\n\n
https://example.com\/?your_post_type_slug=post_slug<\/code><\/pre>\n\n\n\nhttps:\/\/cooss.net\/?buysell-coin=btc-25-03-28-02-00<\/code><\/a><\/code><\/pre>\n\n\n\nRegister Query Var in JetEngine Settings<\/h3>\n\n\n\n
Impact when activated<\/h4>\n\n\n\n
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$query = new WP_Query( [\n'my_custom_post_type' => 'post_slug'\n] );<\/code><\/code><\/pre>\n\n\n\n
In the address bar, you can display the post with the following address.<\/p>\n\n\n\nhttps:\/\/cooss.net\/?buysell-coin=btc-25-03-28-02-00<\/a>\n<\/code><\/pre>\n\n\n\nImpact when deactivated<\/h4>\n\n\n\n
What is Rewrite Setting?<\/h3>\n\n\n\n
https://domain.com\/post_type_slug\/post_slug<\/code><\/pre>\n\n\n\nNecessity of Rewrite Setting<\/h4>\n\n\n\n