Theo's Typesafe Cult•4mo ago

uploadthing replacing name and adding customId in middleware fails to run

This middleware does not run, despite this being close to what is provided in the documentation for changing file names and adding customIds (https://docs.uploadthing.com/file-routes#middleware). Logging the error provided by useUploadThing()'s onUploadError gives UploadThingError: Failed to run middleware... Caused by: Object { … }

    .middleware(async ({ req, files }) => {
      // This code runs on your server before upload
      const { user } = await validateRequest();

      // If you throw, the user will not be able to upload
      if (!user) throw new UploadThingError("Unauthorized");

      // Override file name and add customId
      const fileOverrides = files.map((file) => {
        const newName = uniqueNamesGenerator({
          dictionaries: [adjectives, animals, colors],
          length: 4,
        });
        const uuid = crypto.randomUUID();
        return { ...file, name: newName, customId: uuid };
      });

      // Whatever is returned here is accessible in onUploadComplete as `metadata`
      // Return userId to be used in onUploadComplete
      return { userId: user.id, [UTFiles]: fileOverrides };
      // return { userId: user.id };
    })

    .middleware(async ({ req, files }) => {
      // This code runs on your server before upload
      const { user } = await validateRequest();

      // If you throw, the user will not be able to upload
      if (!user) throw new UploadThingError("Unauthorized");

      // Override file name and add customId
      const fileOverrides = files.map((file) => {
        const newName = uniqueNamesGenerator({
          dictionaries: [adjectives, animals, colors],
          length: 4,
        });
        const uuid = crypto.randomUUID();
        return { ...file, name: newName, customId: uuid };
      });

      // Whatever is returned here is accessible in onUploadComplete as `metadata`
      // Return userId to be used in onUploadComplete
      return { userId: user.id, [UTFiles]: fileOverrides };
      // return { userId: user.id };
    })

File Routes - UploadThing Docs

File Routes is a core concept of UploadThing that defines what your users can upload

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uploadthing replacing name and adding customId in middleware fails to run