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mrschulz's avatar
mrschulz
Explorer | Level 3
8 years ago

Dropbox API - Objective C - uploadData - versioned updates

Objective-C API Question 

 

Previously when I uploaded files (old API) dropbox would create numbered versions if the file was already there.

 

I am trying to do this same thing using the "uploadData" file route, like this:

 

 DBFILESWriteMode *mode = [[DBFILESWriteMode alloc] initWithUpdate:parentRev];

// parentRev is null here, what should it be ?

 

[[client.filesRoutes uploadData:[path stringByAppendingPathComponent:name] mode:mode autorename:false clientModified:nil mute:false inputData:data]

     setResponseBlock:^(DBFILESFileMetadata *metadata, DBFILESUploadError *routeError, DBRequestError *networkError) {

         

         if (metadata) {

             [self uploadedFile:[path stringByAppendingPathComponent:name] from:localFileURL.absoluteString metadata:metadata];

         } else {

             [self uploadFileFailedWithRouteError:routeError andNetworkError:networkError];

        } 

     }];

 

This always fails, with the error message:

 

2018-01-12 16:50:45.010 Shot Lister[93699:4378867] There was an error uploading the file

RouteError - (null)

NetworkError - DropboxBadInputError[{

    ErrorContent = "Error in call to API function \"files/upload\": HTTP header \"Dropbox-API-Arg\": mode: missing 'update' key";

    RequestId = 80a4b8c090dd70cb191ff3182e76c4e1;

    StatusCode = 400;

    UserMessage = nil;

}];

 

If I initWithOverWrite it works just fine.

 

 

"" 

 

  • Greg-DB's avatar
    Greg-DB
    Icon for Dropbox Staff rankDropbox Staff

    When using the "update" write mode, the "parentRev" value should be the latest FileMetadata.rev value you saw for the file. That allows you to safely overwrite the file without accidentally overwriting a newer version. (It will create a conflict if the rev value you supply isn't actually the latest.)

     

    Based on your description though, it sounds like you might actually want the "add" write mode. There's more information on the different write modes in that documentation.

    • mrschulz's avatar
      mrschulz
      Explorer | Level 3

      the "add Write" mode sounds like exactly what I need.

      However, it gives me this error when I try it ( do I still need the parentRev somehow ?)

       

      There was an error uploading the file

      RouteError - {

          ".tag" = path;

          path =     {

              reason =         {

                  ".tag" = conflict;

                  conflict =             {

                      ".tag" = file;

                  };

              };

              "upload_session_id" = AAAAAAAALlfY4TOhRrLTZw;

          };

      }

      NetworkError - DropboxHttpError[{

          ErrorContent = "path/conflict/file/.";

          RequestId = f3592a2cc49f18bb997e881887eba543;

          StatusCode = 409;

          UserMessage = nil;

      }];