The wp_query class is very powerful. You can create custom queries that run anywhere in the default content, sidebar, or WordPress site. This is something I often use in external areas of content, such as custom template files, sidebars, or footers. You also forgot how many times you used wp\u query to encode custom queries. However, all rework can be avoided. If you make query arguments filterable, you can modify them and create functions that run other queries elsewhere in the site. This means that you can create a plug-in with a few default parameters (or actually no parameters at all), and then create functions in the topic (or other plug-ins) that modify these parameters. The
This means that you can encode the wp_query instance once and adjust it if necessary, but do not change the loop running with the query factor (you can also create other filters if necessary). In this post, we will show you how to write a plug-in using the filterable instance of wp_query, and then write a function in the function file of the topic to edit arguments. If necessary, you must visit several items to keep up with the post. To run the development or test installation of word press with its own theme or sub theme, the code editor also needs to know how to write plug-ins, edit function files, and use wp\u query. The
Are you ready? So here we go! Start by creating the wp_query plug-in. Create a new folder for the plug-in in the WP content \/ plugins folder, and then create an empty file in it. Always create a folder to prevent adding styles, scripts, or include files to the plug-in later. The starting line of my plug-in is as follows: Load summary 21af1e226cb9c43fb0da0ef6601798ba now add the wp\u query function$ Start by adding the args variable, but leave it blank. The
Load the summary 21af1e226cb9c43fb0da0ef6601798ba, and then add the loop. Load summary 21af1e226cb9c43fb0da0ef6601798ba all functions include: Load summary 21af1e226cb9c43fb0da0ef6601798ba now has fairly standard queries and loops. It executes the query based on the argument (currently empty), and then outputs the title after the list of items imported with the link. You can use categories, classifications, post types, or other items as arguments to output a list of posts. The
But now the parameter is empty, so nothing will be output. I’m going to add a few arguments, but I’m going to wrap them in filters. Edit the $args section of the filterable parameter addition code to add the $args section parameter. I will add a parameter to post_per_page to limit the number of post outputs. No additional parameters are added. This will print the last 5 posts. If necessary, you can add several different arguments. Loading the summary 21af1e226cb9c43fb0da0ef6601798ba is too simple so far. Now package these arguments as filters. The codes are as follows: The
The load summary 21af1e226cb9c43fb0da0ef6601798ba can capture a single parameter in a filter named wpmu\u filterable\query, and then modify the parameter from other plug-ins or topic connections. At the same time, we add the filter to the corresponding header inside the ring. Because it’s a little common. Edit the ring to include the filter. Load summary 21af1e226cb9c43fb0da0ef6601798ba, that’s all.
