How to response with generated file, like Attachment but without creating a file?

[efkz]

Hi!

I'm generating a table and wish that users be able to save it as excel file. But c.Attachment requires a real file and c.Blob does not triggers the browser to save a file.

[aldas]

First thing that I found: https://stackoverflow.com/a/15703536 basically you need to tell browser which type of attachment (Content-Type header) the server is sending and if it knows how to handle (to use which program to open) it - it will will use Excel to open that attachment.

[efkz]

Thanks a lot!
Found also this: https://stackoverflow.com/questions/4212861/what-is-a-correct-mime-type-for-docx-pptx-etc

[apuatcfbd]

Here is what I'm using (without making an actual file)

func GetSampleCsvFile(c echo.Context) error {
	c.Response().Header().Set(echo.HeaderContentDisposition, "attachment; filename=times-sample.csv")
	return c.Blob(http.StatusOK, "text/csv", someservice.GetSampleCsv())
}