Django：增加reportlab中的抽象值

Question

我正在使用reportlab生成pdf。在這裏，我從數據庫檢索配置文件。在打印到數據庫中時，每個配置文件應顯示在下一頁中。爲此，我無法在增加頁面座標時打印該值。

def reportlab(request): 

    response = HttpResponse(mimetype='application/pdf') 
    response['Content-Disposition'] = 'attachment; filename=somefilename.pdf' 
    buffer = BytesIO() 

    # Draw things on the PDF. Here's where the PDF generation happens. 
    # See the ReportLab documentation for the full list of functionality. 
    child = Child_detail.objects.all() 
    for child1 in child: 
     name = child1.name 
     p = canvas.Canvas(buffer) 
     p.drawString(500, 400, name) 
     p.showPage() 
     p.save() 
    pdf = buffer.getvalue() 
    buffer.close() 
    response.write(pdf) 
    return response 

Answer 1

你可能要移動畫布的建立和保存退出循環，所以你最終使用Canvas的單個實例

p = canvas.Canvas(buffer) 
child = Child_detail.objects.all() 
for child1 in child: 
    name = child1.name 
    p.drawString(500, 400, name) 
    p.showPage() 
p.save()