Let me know in the comments below. Definitely would want to research the security before implementing a custom upload function though. Can you navigate away from the Dashboard widget and it continues the upload? Excellent tutorial. Right on. Limiting the upload functionality to certain users or roles can go a long way here as well. Roles, users, and context — albeit the context will be a bit hard to securely determine from an AJAX request.
Am I mis-interpreting that? No, it will work fine. Also, another cool thought would be to pass the max upload size to your JS, so that you can reduce the number of AJAX requests. Of course it also might not be a bad idea to introduce a max cap, since some servers might have a pretty hight limit I locally have mb upload and post max size, but I also have a very high memory limit.
Please can someone translate the php upload code in the last part to server side JavaScript equivalent? Hi, great plugin, maybe it can help me to organise my current nonprofit project. But there is no entry in the media library. Can you give me a little help? Nice tutorial. Some years ago I created wordpress. Probably plenty of plupload would be unnecessary now that there are more modern APIs. We can do that by passing the blob of data that we created to the FileReader object: reader.
Saving Chunks Server-Side Now that JavaScript has split the file up and sent it to the server, we need to re-assemble and save those chunks to the filesystem. Conclusion I like how easy it is to create an AJAX file uploader that can handle large files without needing to adjust any settings server-side. Active Oldest Votes. As found in StreamSaver. Thank you for your answer, I know about StreamSaver.
Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name. Email Required, but never shown. The Overflow Blog. Podcast Who is building clouds for the independent developer? Exploding turkeys and how not to thaw your frozen bird: Top turkey questions Featured on Meta. Now live: A fully responsive profile.
In ASP. When we want to return a file response, we can explicitly set the return type for the action method to be FileResult , which is a type inherited from ActionResult. But most times we still want to use the generic ActionResult because it covers many other useful return types, such as BadRequest , NoContent , and so on. In other words, no matter which of the four types you use, the client-side will not notice any difference when downloading a file from the API endpoint.
Apart from the constructors for the four concrete types, we can use a method File , provided natively from the ControllerBase class, to return a concrete FileResult object. With the groundwork laid, we can easily write an action method as follows:. In the code above, we first find or generate the requested file from the local file system or a file storage, then read the file content. In the end line 7 , we return a FileContentResult object that is created using the method File byte[] fileContents, string contentType, string fileDownloadName.
Note that we should validate the request and user permissions before finding or generating the requested file. And you can choose to stream the file too. In the File method line 7 , the second parameter contentType is used in the HTTP header to indicate the format of contents transmitted over the internet.
You can set the value for contentType according to your file type. In the File method, the third parameter fileDownloadName determines the value for the filename attribute in the content-disposition HTTP response header. Browsers treat this value as the top priority to dictate the filename when downloading the file.
In the responses section, the Swagger UI provides a link for downloading the returned file. Sometimes, the file type should be determined at runtime. Then in this case, we should set the contentType based on the file extension.
0コメント