The progress will need to be calculated at some point while the data is being worked on, so finding how and when to do this is crucial. This happens by the client being updated on the progress from the server - by either the client sending requests to get a progress update, or by the server sending updates back to the client. The goal is to try and keep the user updated with a percentage based progress component. My app can take large file size uploads from users, and as mentioned in my last post, times of a minute or so or processing in Node.js are expected.
Once the user has submitted the form on the front end, there’s no more communication coming back to the front end by default to give an update on the progress of the processing on the server. This post expands on the web app from my last post by adding in a progress bar created with Socket.io. A huge part of user experience when waiting for a computer to process something is keeping the user informed about how long the process will take. To make things easier we’re going to create a small class to contain most of our code.My last post listed attempts I made at speeding up long running server side processes in Node, but as well as ensuring a process is fast, an app also needs to give a good user experience. Since the FileReader API is baked into JavaScript, the HTML side of things is easy and relies on a basic HTML form with a file input element: With that in mind, let’s create a basic (no Vue or React here!) JavaScript file upload example in a WordPress plugin to learn about the FileReader API. The JavaScript FileReader API now has major browser support including Chrome, Firefox, Safari, and even Internet Explorer 10. It’s an easy way to read and process a file directly in the browser.
WP Migrate DB Pro is used on a ton of servers, so I needed to create an upload tool that can handle large files without hitting upload limits. One of its features is the ability to upload and import an SQL file. I ran into this problem while working on WP Migrate DB Pro. You have to find the loaded php.ini file, edit the upload_max_filesize and post_max_size settings, and hope that you never have to change servers and do all of this over again. If you’ve spent any amount of time messing with PHP config files to get a file to upload, you know that uploading large files can be a real pain.
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