在Django视图中使用时如何在reportlab库中的表上方添加图像

问题描述

如何在此代码中在表格上方添加图片

def sales_transaction(self,request,pk):
    response = HttpResponse(content_type='application/pdf')
    download_name = "SalesTransactions.pdf"
    response['Content-disposition'] = 'attachment; filename={}'.format(download_name)
    header = ["Transaction","Date","Amount","Buying Amount","Status","Payment mode"]
    # End writing
    from reportlab.platypus import SimpleDocTemplate
    from reportlab.platypus.tables import Table
    from reportlab.platypus import Image,Paragraph,TableStyle
    from reportlab.lib.units import inch
    from reportlab.pdfgen import canvas
    from reportlab.lib.pagesizes import A4,landscape
    from reportlab.lib.styles import getSampleStyleSheet
    from reportlab.lib.pagesizes import letter
    from io import BytesIO
    from reportlab.lib import colors
    from PIL import Image
    cm =2.54
    elements = []
    a = Image.open("/home/dalalns/Documents/transaction_details.png")
    a.drawHeight = 2 * inch
    a.drawWidth = 2 * inch
    data = [['1',a],['3','4']]
    c = canvas.Canvas(download_name,pagesize=landscape(A4))

    doc = SimpleDocTemplate(response,rightMargin=0,leftMargin=1 * cm,topMargin=0.3 * cm,bottomMargin=0)
    user = request.user
    phone_number=user
    queryset = DirectTransactions.objects.filter(cashbook__user=user).order_by('-created_at')
    queryset = DirectTransactionsViewSet(request=request).filter_queryset(queryset=queryset)

    data = [["Date","Description","Sales","Spending","Profit"],]
    total_sale=0
    total_spending=0
    total_profit=0
    for ct in queryset:
        if ct.buying_amount:
            buying_amount=ct.buying_amount
        else:
            buying_amount=0
        total_sale=total_sale+ct.amount
        total_spending =total_spending+buying_amount
        total_profit = total_profit+ct.amount-buying_amount
        row = [
            ct.txn_date,ct.txn_note,round(ct.amount,2),round(buying_amount,round((ct.amount - buying_amount),2)
        ]
        data.append(row)

    data.append(["Total","",round(total_sale,round(total_spending,round(total_profit,2)])
    table = Table(data,colWidths=80,rowHeights=30)
    table.setStyle(TableStyle([
        ('INNERGRID',(0,0),(-1,-1),0.25,colors.black),('Box',('BACKGROUND',colors.lightgrey)
    ]))
    table.wrapOn(c,200,400)
    table.drawOn(c,20,50)
    c.save()
    elements.append(table)
    doc.build(elements)
    return response

如何设置表格样式以使其看起来更优雅，以及如何在表格上方添加图像，如果我想在表格上方添加文字，该怎么做。 我尝试使用此代码，但无法正常工作，图像似乎未进入pdf。

解决方法

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