![]() Metadata works behind-the-scenes magic, offering snippets of information about your content to demonstrate relevance to search engines and optimize discovery. #Wordpress get media meta how toIn the last post in the series, I’ll cover how to do that.What’s sexier than metadata? Absolutely nothing. Obviously, deleting the files is the next step in the process.ĭoing this is obviously more than a matter of removing the file from the file system – it’s also removing the information from the post meta data in the database, and updating the interface to reflect this change. Now at this point, if you’re to look in the `uploads` directory, you’ll see the file that you uploaded:Īnd if you take a peek at the database, you’ll see the post meta data associated with the given post: #Wordpress get media meta updateNext, I’ll update the post’s meta data with the URL to the file as well as the path to the file. If something exists for the given meta key, then I’ll delete the file. To do this, I first check the post’s meta data. If a file already exists, then I need to remove it. In my case, I’m simply using `attached-file-url` and `attached-file-path` – one piece of meta data will be the URL to the file, the other, obviously, is the path to the file on the disk. To that end, we need a unique meta key that we can use for the post meta API. If that’s the case, we don’t want to leave residual files cluttering the `uploads` directory. Next, we need to check to see if existing post meta data exists for the post because a user could be upload a file in place of another file. How you opt to handle the case when it fails is up to you. To do this, you can setup the following conditional: Of course, before you set any meta data, you want to make sure that the upload was successful. Of course, now we need to associate the uploaded file with the custom post type (or even just the basic post or page, if that’s what you’re working with). #Wordpress get media meta codeGranted, this particular block of code could include a bit more error checking, the reduction of muting of ` file_get_contents` warnings, as well as replacing `file_get_contents` with ` wp_remote_get`, but the example above – for all intents and purposes – serves its purpose in demonstrating how to do this, and covering each of the other additions would add unnecessary length to this article. And this is where `wp_upload_bits` comes into play.Īt this point, we’re successfully saving the file to the most recent subdirectory of the `uploads` directory. To do this, I normally setup the following conditional:Īssuming both of these evaluate to `TRUE`, then I can actually upload the file. Before actually doing any uploading, you need to make sure that files are actually set for upload, and, if so, that the user has permission and the proper nonce values are being sent across the wire for the given file. Next, you need to setup the code for uploading the file. The most important thing is that you recognize the`input` element’s `name` attribute, and that you properly setup your nonce value. This snippet is obviously part of a larger display within the plugin, but it should be easy enough to follow. But before we take a look at that code, we need some basic markup that allows the user to upload a file: This is where the ` wp_upload_bits` function comes into play. Note that I mentioned that we are not using the WordPress media uploader to do this however, we need to be able to store the files in the `uploads` directory that exists in the users WordPress installation. Programmatically Upload Files in WordPress Over the next two articles, I’ll share how to programmatically upload files in WordPress and save their associated meta data, and then I’ll share how to programmatically delete the files in WordPress as well as their associated meta data. To that end, you need to be able to store not only where the file is on disk (for the sake of being able to delete), but also the URL of the file so that visitors or viewers can access the file via their browser. The primary reason that you have to store the file’s location on disk is because you can’t rely on PHP to delete a file via remote requests.
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