The first one is: params which can be a function, that receives files, xhr and chunk as the first argument. retr圜hunks, if true, the library will retry to upload a chunk if it fails.parallelChunkUploads, if true, the chunks will be uploaded simultaneously.forceChunking, if true, will always send a file in chunks, even if it is only one chunk.The relevant configuration options for this feature are: Eg.: Chunked uploadsĭropzone offers the possibility to upload files in chunks. If the Content-Type is application/json, Dropzone will use the error property of the provided object. If the Content-Type of your response is text/plain, you can just return the text without any further markup. In PHP (for example) you can set it with the header command.ĭropzone will then know that the file upload was invalid, and will display the returned text as error message. In most frameworks those error codes are generated automatically when you send back an error to the client. If you want Dropzone to display any error encountered on the server, all you have to do, is send back a proper HTTP status code in the range of 400 - 500. Very often you have to do some verification on the server to check if the file is actually valid. How to show an error returned by the server? There is a queuecomplete event now that fires when all files in the queue have been uploaded. How to get notified when all files finished uploading?Īt the moment there isn't a single event to do that, but you can listen to the complete event, which fires every time a file completed uploading, and see if there are still files in the queue or being processed. Increase this to create thumbnails of bigger files. There is a maxThumbnailFilesize option in Dropzone which defaults to 10 (MB) to prevent the browser from downsizing images that are too big. Why are some image thumbnails not generated? Please check with the appropriate documentation. Most servers limit the file upload size as well. If your files upload fine but aren't stored on the server, then it's due to your server configuration. Increase this to upload files bigger than that. There is a maxFilesize option in Dropzone which defaults to 256 (MB). To leave autoDiscover enabled, and configure your Dropzone in the init option of your configuration. You don't have to create an instance of Dropzone programmatically in most situations! It's recommended Turn off autoDiscover of specific elements like this: = false.Turn off autoDiscover globally like this: toDiscover = false, or.If you, later on, create a Dropzone instance yourself, you'll create a second Dropzone which causes this error. It then creates an instance of Dropzone for every element found. When Dropzone starts, it scans the whole document, and looks for elements with the dropzone class. This is most likely due to the autoDiscover feature of Dropzone. I get the error "Dropzone already attached." when creating the Dropzone. If you think that there is something missing, please contact me. I try to keep this FAQ as complete as possible.
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