I am creating a javascript routine that requires me to download and upload updated files in my dropbox app file folders which contains updated football picks. I am able to upload files to my app but when I try to upload I get an undefined error. file path :download functions (I tried both of these) :Both of these functions return the same error :Any assistance would be greatly appreciated. Thanks.

LoadFileFromDropbox error (other load function attempt)

Hi amei The response from 'filesDownload()' does not contain a 'fileBlob' property (which is why you are getting an 'undefined' in the error message). The response contains a 'fileBinary', which can be accessed as such: 'response.result.fileBinary'. Additionally, you can convert the returned Buffer to text or a string by invoking the 'toString()' method on the response. We would also recommend making that callback function an async function: ... dbx.filesDownload({ path: dropbox_users_path_file }) .then(async (response) => { console.log(response.result.fileBinary.toString()) } ... Similarly for the second function: ... try { const response = await dbx.filesDownload({ path: dropbox_users_path_file }) console.log(response.result.fileBinary.toString()) } ... In order to further assist with the file upload error, please provide the code snippet used to upload files to Dropbox. The screenshots provided are both for downloading files ('filesDownload()').

thanks for your assistance. I updated both functions as you suggested :Still getting the same errors :The jason file that I have uploaded from my upload function looks like this :It is an array of football picks. So when I upload the files I used the JSON.stringify to save the array. When I open the jason file I see text, not binary characters. Not sure if this is the problem. Perhaps a text response would ? I need to download the file back into the array (what the file is currently saved as as shown above. I should have included this info in my initial post. I hope this provides more clarity. thanks.

I updated my download function as :I get a successful download, but I don't see the one line of football picks, just a blank array. The array is formatted correctly, but does not contain any information. I changed fileBinary to fileText. I'm not sure if I have to define that it is a json file.

amei Could you share the actual error that is being logged onto the console? Both the top-level 'error' and the lower-level 'error.error'.

Using javascript to download file from dropbox

14 Replies

amei
Explorer | Level 3
3 months ago
Hi INeil. As I mentioned previously I was able to download the dropbox jason file and parse it into and array inside the async function shown below. However when I try to use it outside the async function it is either returned as undefined or a promise. Below are more detials.
Load file from dropbox and parse the array. Works fine within this async function.
Results : within function (listed as local) the array works fine, outside function (listed as global), a promise is returned and the array is undefined. Any assistance with using this array outside of the async function would be greatly appreciated.
James_David
Explorer | Level 3
3 months ago
The Dropbox Python SDK can fail to download complete files in Pyodide or xlwings lite. A workaround is to call the Dropbox API for a temporary link and then fetch that link with pyfetch. For example, use files/get_temporary_link to get the URL, then call pyfetch(link, method="GET") and use res.bytes() to get the full file. Uploads with the SDK usually work fine, but for downloads this direct fetch method avoids incomplete files.
amei
Explorer | Level 3
2 months ago
One more issue I am trying to resolve. As I mentioned previously I was able to download the file from dropbox and properly parse it into an array and access array elements within the async function I use to download the dropbox file. However I am having issues using the array outside of the async function LoadFileFromDropBox. It looks like it returns a promise not an array I can use outside the function. I have tried a few things get the array from the returned promise but unsuccessful. Here is the functions I am trying to work with :
I have tried various calls to try to access the array outside the async function :
The usual results I get on the console is as follows :
Any assistance to be able to use the users_array outside of the async functions would be greatly appreciated. Thanks.
DB-Des
Dropbox Community Moderator
2 months ago
amei

Could you provide the whole code snippet so we can test it on our end?