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Upload (default)

Last opp dokumenter

Dra & slipp eller velg hvilke filer du vil laste opp.

Tillatte filformater:
JPG, PNG
Maks filstørrelse:
5 MB
Code Editor
<Upload acceptedFileTypes={['jpg', 'png']} id="upload-basic" />

'useUpload' React Hook

By using the Upload.useUpload you can remove or add files or the status displayed in the component.

You can also use the file blob in combination with the FileReader API.

Code Editor
const Component = () => {
  const { files, setFiles } = Upload.useUpload('upload-remove-files')
  return (
    <>
      <Upload
        acceptedFileTypes={['jpg', 'png']}
        id="upload-remove-files"
      />

      <Button
        top="small"
        disabled={files.length < 1}
        onClick={() => setFiles([])}
      >
        Remove selected files
      </Button>

      <Preview files={files} />
    </>
  )
  function Preview({ files }) {
    const [images, setImages] = React.useState([])
    React.useEffect(() => {
      files.map(({ file }) => {
        let reader = new FileReader()
        reader.addEventListener(
          'load',
          (event) => {
            images.push({
              blob: event.target,
              file,
            })
            setImages([...images])
            reader = null
          },
          false,
        )
        reader.readAsDataURL(file)
      })
    }, [files])
    return (
      <Section aria-label="List of chosen images">
        {images.map((img, i) => (
          <Img
            top
            key={i}
            src={img.blob.result}
            alt={img.file.name}
            height={100}
          />
        ))}
      </Section>
    )
  }
}
render(<Component />)

SyntaxError: Unexpected token (1:3)

Upload single file/fixed amount of files

Code Editor
const Component = () => {
  const { files, setFiles } = Upload.useUpload('upload-single-file')
  if (files.length) {
    console.log('files', files, setFiles)
  }
  return (
    <Upload
      acceptedFileTypes={['jpg', 'png']}
      id="upload-single-file"
      filesAmountLimit={1}
    />
  )
}
render(<Component />)

SyntaxError: Unexpected token (1:3)

Upload loading state

When uploading the file you can set the loading state of the request using the Upload.useUpload hook and passing isLoading to the file that is being uploaded.

Code Editor
const Component = () => {
  const { files, setFiles } = Upload.useUpload('upload-is-loading')
  useMockFiles(setFiles, {
    isLoading: true,
  })
  return (
    <>
      <Upload acceptedFileTypes={['jpg', 'png']} id="upload-is-loading" />
      <ToggleButton
        top="small"
        disabled={files.length < 1}
        on_change={({ checked }) =>
          setFiles(
            files.map((fileItem) => {
              return {
                ...fileItem,
                isLoading: checked,
              }
            }),
          )
        }
      >
        Files is loading toggle
      </ToggleButton>
    </>
  )
}
render(<Component />)

SyntaxError: Unexpected token (1:3)

Upload error message

The only checks we do currently is for the file size and the file type. These errors are handled by the HTML element ´input´ so they aren't selectable. If you want any other error messages you can use the Upload.useUpload the same way as with the loading state.

Code Editor
const Component = () => {
  const { files, setFiles } = Upload.useUpload('upload-error-message')
  return (
    <>
      <Upload
        acceptedFileTypes={['jpg', 'png']}
        id="upload-error-message"
      />
      <ToggleButton
        top="small"
        disabled={files.length < 1}
        on_change={({ checked }) => {
          setFiles(
            files.map((fileItem) => {
              return {
                ...fileItem,
                errorMessage: checked ? 'custom error message' : null,
              }
            }),
          )
        }}
      >
        Toggle error message
      </ToggleButton>
    </>
  )
}
render(<Component />)

SyntaxError: Unexpected token (1:3)

Upload specific accepted file formats

You can pass the file formats as a string array. This will restrict which files that can be selected.

Code Editor
const Component = () => {
  const { files, setFiles } = Upload.useUpload('upload-accepted-formats')
  if (files.length) {
    console.log('files', files, setFiles)
  }
  return (
    <Upload
      acceptedFileTypes={['png', 'jpg', 'pdf']}
      id="upload-accepted-formats"
    />
  )
}
render(<Component />)

SyntaxError: Unexpected token (1:3)

Upload with prefilled error

Code Editor
const Component = () => {
  const { files, setFiles } = Upload.useUpload('file-list')
  if (files.length) {
    console.log('files', files)
  }
  useMockFiles(setFiles, {
    errorMessage: 'This is no real file!',
  })
  return <Upload acceptedFileTypes={['jpg', 'png']} id="file-list" />
}
render(<Component />)

SyntaxError: Unexpected token (1:3)