![]() ![]() In the example above, we operated a single file upload, thus using File. Use FileList, File, Blob or ReactNativeFile instances anywhere within query or mutation input variables to send a GraphQL multipart request. The default option for enabling file uploads in Apollo Server 2.0 involves creating a schema and using the Upload type like so: const Stay with me! The resolver section will reveal what the object contains and how you can use it. In the resolver function, the upload promise resolves an object. The server processes it and provides an upload argument to a resolver. The Server: The multipart request is received. The Client: On the client, file objects are mapped into a mutation and sent to the server in a multipart request. Two parts are needed to make the upload work correctly. The upload functionality follows the GraphQL multipart form requests specification. This post being about the specific case of file uploads and JSON data. Apollo Server enables you to combine multiple previously orthogonal data sources into a single paradigm. Just how Apollo Client merges remote and local data. With GraphQL, we are achieving a single paradigm of data management. We decided to incorporate the much requested file uploads feature into Apollo Server 2.0, thanks to inspiration from the wonderful apollo-upload-server package by Jayden. Jayden Seric, a JavaScript engineer and GraphQL community member came up with a specification for GraphQL multipart form requests(file uploads) and also provided a reference implementation.Īt Apollo, we are committed to making sure you have the best developer experience throughout your GraphQL journey. Another option is to send file(s) in the same request as your mutation, which I’ll cover in this post! One of the simplest ways of achieving file uploads in a single request is to base64-encode a file and send as a string variable in a mutation. However, coordinating these multiple requests might be hard to manage. There are several ways you could upload files when using a GraphQL API, for example sending the file to Cloudinary or S3 directly and passing the returned URL through a GraphQL mutation. For a while now, the question being asked around the GraphQL community is “How does one perform file uploads in GraphQL itself?” The community turned to the GraphQL specification and reference implementation but found no answers because the specification has no provisions for file uploads. In web applications, one of the most common requirements is file uploads. ![]() In fact, this feature was removed from Apollo Server in version 3, although you can still manually integrate with the graphql-upload package if you take care to protect yourself from Cross-Site Request Forgery (CSRF) attacks. ![]() Our current recommendation is to not use the multipart request approach described in this package. For our recommendation on how to handle file uploads, read Apollo Server File Uploads Best Practices. ![]()
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