Question

我想将我的表导出到csv文件中。但是我表中的一些字段是属性。

例如：＆＃39; current_tobe_payed＆＃39;，＆＃39; current_balance＆＃39;，＆＃39; current_period＆＃39;，＆＃39; total_payment＆＃39;，＆＃39; total_discount＆＃39 ;

def export_leaseterm_csv(request):
        response = HttpResponse(content_type='text/csv')
        response['Content-Disposition'] = 'attachment; filename="leaseterm.csv"'

        writer = csv.writer(response)
        writer.writerow(['lease', 'increase', 'amount', 'is_terminated', 'current_tobe_payed', 'current_balance', 'current_period','total_payment', 'total_discount'])

        leaseterms = LeaseTerm.objects.all().values_list('start_period', 'end_period', 'lease', 'increase', 'amount', 'is_terminated', 'current_tobe_payed', 'current_balance', 'current_period','total_payment', 'total_discount')
        for leaseterm in leaseterms:
            writer.writerow(leaseterm)

        return response

我正在Cannot resolve keyword 'current_tobe_payed' into field.

我如何克服它？

更新：

我已根据回答更新了视图：

def export_leaseterm_csv(request):
    response = HttpResponse(content_type='text/csv')
    response['Content-Disposition'] = 'attachment; filename="leaseterm.csv"'

    writer = csv.writer(response)


    leaseterms = serializers.serialize( "python", LeaseTerm.objects.all())

    for leaseterm in leaseterms:
        writer.writerow([value[0] for value in leaseterm])

    return response

收到的输出

F，M，P F，M，P F，M，P F，M，P F，M，P

如果预期是：

33 8788 -6105.00 0 0 6105.00 555.00 False True False

28 4545 -5537.00 1120.00 15.00 6657.00 556.00假真假

32 6789 -3108.00 0 0 3108.00 777.00 False True False

34 2222 0.00 0 0 0.00 777.00 False True False

Answer 1

显然，您所说的属性已启用current_tobe_payed。属性不能在values_list调用中使用。将您的代码更改为：

from django.core import serializers
data = serializers.serialize( "python", LeaseTerm.objects.all() )

for leaseterm in  data:
    writer.writerow([value for value in leaseterm['fields'].values()])

这个序列化程序从我们的模型对象创建一个标准的python对象，它允许我们遍历它们的字段。我们从列表理解中得到一些帮助。

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1 个答案: