Get response writer from context to send excel (Excelize)

[centratelemedia]

below is sample using net/http to write excel file from excelize, howto get response writer from context?

func GenerateExcel(w http.ResponseWriter, r *http.Request) {
	xlsx := excelize.NewFile()
	xlsx.NewSheet("Sheet2")
	xlsx.SetCellValue("Sheet2", "A2", "Hello world.")
	xlsx.SetCellValue("Sheet1", "B2", 100)
	xlsx.SetActiveSheet(2)

	w.Header().Set("Content-Type", "application/octet-stream")
	w.Header().Set("Content-Disposition", "attachment; filename="+"Workbook.xlsx")
	w.Header().Set("Content-Transfer-Encoding", "binary")
	w.Header().Set("Expires", "0")
	xlsx.Write(w)
}

convert to iris but i can get response writer

func (u *UserService) listUser(ctx iris.Context) {
	xlsx := excelize.NewFile()
	xlsx.NewSheet("Sheet2")
	xlsx.SetCellValue("Sheet2", "A2", "Hello world.")
	xlsx.SetCellValue("Sheet1", "B2", 100)
	xlsx.SetActiveSheet(2)
	ctx.Header("Content-Type", "application/octet-stream")
	ctx.Header("Content-Disposition", "attachment; filename="+"Workbook.xlsx")
	ctx.Header("Content-Transfer-Encoding", "binary")
	ctx.Header("Expires", "0")
	xlsx.Write(w)
}

[centratelemedia]

problem solve

func (u *UserService) listUser(ctx iris.Context) {
	xlsx := excelize.NewFile()
	xlsx.NewSheet("Sheet2")
	xlsx.SetCellValue("Sheet2", "A2", "Hello world.")
	xlsx.SetCellValue("Sheet1", "B2", 100)
	xlsx.SetActiveSheet(2)
	ctx.Header("Content-Type", "application/octet-stream")
	ctx.Header("Content-Disposition", "attachment; filename="+"Workbook.xlsx")
	ctx.Header("Content-Transfer-Encoding", "binary")
	ctx.Header("Expires", "0")
	xlsx.Write(ctx.ResponseWriter())
}