fileupload example

This server demonstrates how to handle file upload

to run this server

go run ./example/fileupload/server/server.go

and open http://localhost:8087 in your browser

Single file

Operations

{
  query: `
    mutation($file: Upload!) {
      singleUpload(file: $file) {
        id
      }
    }
  `,
  variables: {
    file: File // a.txt
  }
}

cURL request

curl localhost:8087/query \
  -F operations='{ "query": "mutation ($file: Upload!) { singleUpload(file: $file) { id, name, content } }", "variables": { "file": null } }' \
  -F map='{ "0": ["variables.file"] }' \
  -F 0=@./example/fileupload./testfiles/a.txt

Request payload

--------------------------e6b2b29561e71173
Content-Disposition: form-data; name="operations"

{ "query": "mutation ($file: Upload!) { singleUpload(file: $file) { id, name, content } }", "variables": { "file": null } }
--------------------------e6b2b29561e71173
Content-Disposition: form-data; name="map"

{ "0": ["variables.file"] }
--------------------------e6b2b29561e71173
Content-Disposition: form-data; name="0"; filename="a.txt"
Content-Type: text/plain

Alpha file content.
--------------------------e6b2b29561e71173--

Single file with payload

Operations

{
  query: `
    mutation($file: Upload!) {
      singleUpload(file: $file) {
        id
      }
    }
  `,
  variables: {
    file: File // a.txt
  }
}

cURL request

curl localhost:8087/query \
  -F operations='{ "query": "mutation ($req: UploadFile!) { singleUploadWithPayload(req: $req) { id, name, content } }", "variables": { "req": {"file": null, "id": 1 } } }' \
  -F map='{ "0": ["variables.req.file"] }' \
  -F 0=@./example/fileupload/testfiles/a.txt

Request payload

--------------------------38752760889d14aa
Content-Disposition: form-data; name="operations"

{ "query": "mutation ($req: UploadFile!) { singleUploadWithPayload(req: $req) { id, name, content } }", "variables": { "req": {"file": null, "id": 1 } } }
--------------------------38752760889d14aa
Content-Disposition: form-data; name="map"

{ "0": ["variables.req.file"] }
--------------------------38752760889d14aa
Content-Disposition: form-data; name="0"; filename="a.txt"
Content-Type: text/plain

Alpha file content.
--------------------------38752760889d14aa--

File list

Operations

{
  query: `
    mutation($files: [Upload!]!) {
      multipleUpload(files: $files) {
        id
      }
    }
  `,
  variables: {
    files: [
      File, // b.txt
      File  // c.txt
    ]
  }
}

cURL request

curl localhost:8087/query \
  -F operations='{ "query": "mutation($files: [Upload!]!) { multipleUpload(files: $files) { id, name, content } }", "variables": { "files": [null, null] } }' \
  -F map='{ "0": ["variables.files.0"], "1": ["variables.files.1"] }' \
  -F 0=@./example/fileupload/testfiles/b.txt \
  -F 1=@./example/fileupload/testfiles/c.txt

Request payload

--------------------------d7aca2a93c3655e0
Content-Disposition: form-data; name="operations"

{ "query": "mutation($files: [Upload!]!) { multipleUpload(files: $files) { id, name, content } }", "variables": { "files": [null, null] } }
--------------------------d7aca2a93c3655e0
Content-Disposition: form-data; name="map"

{ "0": ["variables.files.0"], "1": ["variables.files.1"] }
--------------------------d7aca2a93c3655e0
Content-Disposition: form-data; name="0"; filename="b.txt"
Content-Type: text/plain

Bravo file content.
--------------------------d7aca2a93c3655e0
Content-Disposition: form-data; name="1"; filename="c.txt"
Content-Type: text/plain

Charlie file content.
--------------------------d7aca2a93c3655e0--

File list with payload

Operations

{
  query: `
    mutation($req: [UploadFile!]!)
      multipleUploadWithPayload(req: $req) {
        id,
        name,
        content
      }
    }
  `,
  variables: {
    req: [
        {
            id: 1,
            File, // b.txt
        },
        {
            id: 2,
            File, // c.txt
        }
    ] 
  }
}

cURL request

curl localhost:8087/query \
  -F operations='{ "query": "mutation($req: [UploadFile!]!) { multipleUploadWithPayload(req: $req) { id, name, content } }", "variables": { "req": [ { "id": 1, "file": null }, { "id": 2, "file": null } ] } }' \
  -F map='{ "0": ["variables.req.0.file"], "1": ["variables.req.1.file"] }' \
  -F 0=@./example/fileupload/testfiles/b.txt \
  -F 1=@./example/fileupload/testfiles/c.txt

Request payload

--------------------------65aab09fb49ee66f
Content-Disposition: form-data; name="operations"

{ "query": "mutation($req: [UploadFile!]!) { multipleUploadWithPayload(req: $req) { id, name, content } }", "variables": { "req": [ { "id": 1, "file": null }, { "id": 2, "file": null } ] } }
--------------------------65aab09fb49ee66f
Content-Disposition: form-data; name="map"

{ "0": ["variables.req.0.file"], "1": ["variables.req.1.file"] }
--------------------------65aab09fb49ee66f
Content-Disposition: form-data; name="0"; filename="b.txt"
Content-Type: text/plain

Bravo file content.
--------------------------65aab09fb49ee66f
Content-Disposition: form-data; name="1"; filename="c.txt"
Content-Type: text/plain

Charlie file content.
--------------------------65aab09fb49ee66f--