NestJS upload using GraphQL

Is anyone has an example of how to upload a file in NestJs using GraphQl?

I can upload using given example via controller

https://github.com/nestjs/nest/issues/262#issuecomment-366098589,

but I couldn't find any comprehensive documentation how to upload using GrahpQL in NestJS

2 Answers
2

One normally does not use GraphQL for upload. GraphQL is fancy "specification of API", meaning that in the end of the day, low level HTTP request and responses are translated to/from JSON objects (if you don't have custom transport).

One solution could be to define special endpoint in GraphQL schema like:

mutation Mutation {
uploadFile(base64: String): Int
}


Then client would convert binary data to base64 string, which would be handled accordingly on resolver side. This way, file will become part of JSON object exchanged between GraphQL client and server.

While this is might be suitable for small files, small number of operations, it is definitely not a solution for upload service.

You could use the apollo-upload-server lib. Seems like the easiest thing to do, in my opinion. Cheers

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