File Uploads – GraphQL Yoga
import
{
makeSchema
,
scalarType
,
mutationField
,
queryField
,
arg
,
nonNull
}
from
'nexus'
import
{ createYoga }
from
'graphql-yoga'
import
{ createServer }
from
'http'
const
FileScalar
=
scalarType
({
name
:
'File'
,
asNexusMethod
:
'file'
,
description
:
'The `File` scalar type represents a file upload.'
,
sourceType
:
'File'
})
const
greetings
=
queryField
(
'greetings'
,
{
type
:
'String'
,
resolve
:
()
=>
'Hello World!'
})
const
readTextFile
=
mutationField
(
'readTextFile'
,
{
type
:
'String'
,
args
:
{ file
:
nonNull
(
arg
({ type
:
'File'
})) }
,
resolve
:
async
(parent
,
{ file }
,
ctx)
=>
{
const
textContent
=
await
file
.text
()
return
textContent
}
})
const
schema
=
makeSchema
({
types
:
[FileScalar
,
greetings
,
readTextFile]
})
const
yoga
=
createYoga
({
schema
:
schema
})
// Start the server and explore http://localhost:4000/graphql
const
server
=
createServer
(yoga)
server
.listen
(
4000
,
()
=>
{
console
.info
(
'Server is running on http://localhost:4000/graphql'
)
})
