graphql upload express


//resolvers.js
export default {
	Query: {
		usersActivation() {
			return 'Hello Wordl'
		}
	},
	Mutation: {
		uploadFile: async (parent, { file }) => {
			const { filename, createReadStream } = await file.promise
			fileUpload({ filename, stream: createReadStream() })
			return true
		}
	}
}

//typedefs.js
export default gql(`
	 scalar Upload

	 type Query {
		helloWordl : String!
	 }

	type Mutation {
		uploadFile(file: Upload!): Boolean
	  }
	`)

// util.upload.js
const uploadFile = ({ filename, stream }) => {
	stream
		.pipe(createWriteStream(resolve(process.cwd(), `src/images/${filename}`)))
		.on('finish', () => Promise.resolve())
		.on('error', Promise.reject)
}

const validateFile = ({ filename, stream }) => {
	const extFile = filename.replace('.', '')
    
	const extPattern = /(jpg|jpeg|png|gif|svg)/gi.test(extFile)
	if (!extPattern) throw new TypeError('Image format is not valid')

	const fileExits = existsSync(resolve(process.cwd(), `src/images/${filename}`))
	if (!fileExits) return uploadFile({ filename, stream })

	unlink(resolve(process.cwd(), `src/images/${filename}`), (error) => {
		if (error) throw error
		return uploadFile({ filename, stream })
	})
}

export const fileUpload = ({ filename, stream }) =>
	filename ? validateFile({ filename, stream }) : new Error('Image is required')


// request query playground
mutation UPLOAD_FILE($file: Upload!) {
  uploadFile(file: $file)
}

Are there any code examples left?
Made with love
This website uses cookies to make IQCode work for you. By using this site, you agree to our cookie policy

Welcome Back!

Sign up to unlock all of IQCode features:
  • Test your skills and track progress
  • Engage in comprehensive interactive courses
  • Commit to daily skill-enhancing challenges
  • Solve practical, real-world issues
  • Share your insights and learnings
Create an account
Sign in
Recover lost password
Or log in with

Create a Free Account

Sign up to unlock all of IQCode features:
  • Test your skills and track progress
  • Engage in comprehensive interactive courses
  • Commit to daily skill-enhancing challenges
  • Solve practical, real-world issues
  • Share your insights and learnings
Create an account
Sign up
Or sign up with
By signing up, you agree to the Terms and Conditions and Privacy Policy. You also agree to receive product-related marketing emails from IQCode, which you can unsubscribe from at any time.
Creating a new code example
Code snippet title
Source