attach元素0.14.0起可用
A file that will be attached to the output PDF.
This can be used to distribute additional files associated with the PDF within it. PDF readers will display the files in a file listing.
Some international standards use this mechanism to attach machine-readable data (e.g., ZUGFeRD/Factur-X for invoices) that mirrors the visual content of the PDF.
Example
#pdf.attach(
"experiment.csv",
relationship: "supplement",
mime-type: "text/csv",
description: "Raw Oxygen readings from the Arctic experiment",
)Notes
- This element is ignored if exporting to a format other than PDF.
- File attachments are not currently supported for PDF/A-2, even if the attached file conforms to PDF/A-1 or PDF/A-2.
参数
path
The path of the file to be attached.
Must always be specified, but is only read from if no data is provided in the following argument.
data
Raw file data, optionally.
If omitted, the data is read from the specified path.
relationship默认值：none
The relationship of the attached file to the document.
Ignored if export doesn’t target PDF/A-3.
| Variant | Details |
|---|---|
"source" | The PDF document was created from the source file. |
"data" | The file was used to derive a visual presentation in the PDF. |
"alternative" | An alternative representation of the document. |
"supplement" | Additional resources for the document. |
mime-type默认值：none
The MIME type of the attached file.
description默认值：none
A description for the attached file.