A Real-World Example: Displaying a Highly Personalized List
Dec 20, 2023 7:15:11 GMT
Post by account_disabled on Dec 20, 2023 7:15:11 GMT
For example, we can create a query to retrieve articles from the specified author, or excluding the specified author, defining the author by ID or nicename. Likewise, we can create queries to retrieve posts by category, tags, taxonomy, date, custom fields and more. How to Use Parameters to Create Simple Queries Many parameters can be used in a similar way, regardless of the category they belong to. For example, the following parameters allow you to query the database by post author(s): author( int ) – Author ID author_name( string ) – user_nicenameby the author author__in( array ) – an array of multiple author IDs author__not_in( array ) – an array of multiple author IDs to exclude from the result set How can we use these parameters? In the example below, the parameter 'author'specifies that we want the most recent blog posts written by the author with.
Additionally, we can use category parameters, post Buy Bulk SMS Service parameters, mime type parameters, etc. all in one query. This means that we have granular control over the elements of the result set, and that we can build increasingly advanced queries based on post types, custom taxonomies and custom fields all at once. So let's dive deeper! How to Create Advanced Queries in WordPress Let's take a step forward with a more advanced query based on custom post type and custom taxonomy. Suppose we have the following post type: name : book taxonomy name : book_category, book_author support for : title, editor, thumbnail, excerpt, custom-fields Custom Post Type and Custom Taxonomy Suppose we want a list of the most recent books in the specified custom taxonomy book_category.
Here is the argument These parameters allow us to retrieve a list of the last 10 types of posts 'book'in 'book_category', written by 'book_author'having ID 22. The parameter 'relation'sets the logical relationship between all taxonomies listed in 'tax_query'. Above we set the value to ANDbecause we need to retrieve all books belonging to the category 'sci-fi'e ( AND) written by author #22. How to Create Meta Queries Using Custom Field Parameters Occasionally, it may be necessary to create lists of posts based on the key and/or value of a specific custom field. Here we have set a series of parameters to retrieve a list of fantasy books published after 2010 that cost BETWEEN$10 and $25. You can see that the parameter 'meta_query'works very similarly to the parameter 'tax_query'. It accepts an array of arrays, allowing us to create advanced queries based on multiple meta key/value pairs.
Additionally, we can use category parameters, post Buy Bulk SMS Service parameters, mime type parameters, etc. all in one query. This means that we have granular control over the elements of the result set, and that we can build increasingly advanced queries based on post types, custom taxonomies and custom fields all at once. So let's dive deeper! How to Create Advanced Queries in WordPress Let's take a step forward with a more advanced query based on custom post type and custom taxonomy. Suppose we have the following post type: name : book taxonomy name : book_category, book_author support for : title, editor, thumbnail, excerpt, custom-fields Custom Post Type and Custom Taxonomy Suppose we want a list of the most recent books in the specified custom taxonomy book_category.
Here is the argument These parameters allow us to retrieve a list of the last 10 types of posts 'book'in 'book_category', written by 'book_author'having ID 22. The parameter 'relation'sets the logical relationship between all taxonomies listed in 'tax_query'. Above we set the value to ANDbecause we need to retrieve all books belonging to the category 'sci-fi'e ( AND) written by author #22. How to Create Meta Queries Using Custom Field Parameters Occasionally, it may be necessary to create lists of posts based on the key and/or value of a specific custom field. Here we have set a series of parameters to retrieve a list of fantasy books published after 2010 that cost BETWEEN$10 and $25. You can see that the parameter 'meta_query'works very similarly to the parameter 'tax_query'. It accepts an array of arrays, allowing us to create advanced queries based on multiple meta key/value pairs.