目前我已经弄清楚如何在我的 serializers.py 中聚合单个列,但是我的薪水字段的总和将转到我的序列化程序中的total_salary字段,而我的模型中没有total_salary 。现在我的问题是我怎样才能在下面的 API 中做这样的事情:
"total_salary": 1422.05,
{
"id": "8c1810d9-b799-46a9-8506-3c18ef0067f8",
"date": "2019-04-27",
"virtual_assistant": "Joevie",
"time_in": "2019-04-27T22:20:13+08:00",
"time_out": "2019-04-28T05:20:13+08:00",
"hours": "7.00",
"client_name": "landmaster",
"rate": "90.00",
"salary": "630.00",
"status": "APPROVED-BY-THE-MANAGER",
"notes": ""
},
现有的是这样的。
{
"id": "8c1810d9-b799-46a9-8506-3c18ef0067f8",
"total_salary": 1422.05,
"date": "2019-04-27",
"virtual_assistant": "Joevie",
"time_in": "2019-04-27T22:20:13+08:00",
"time_out": "2019-04-28T05:20:13+08:00",
"hours": "7.00",
"client_name": "landmaster",
"rate": "90.00",
"salary": "630.00",
"status": "APPROVED-BY-THE-MANAGER",
"notes": ""
},
目前我做的一个解决方法是我现在在 ListView 中得到工资的总和,每次用户都会搜索一个特定的月份。计算将根据用户搜索的月份而变化。代码如下。
def get(self, request, *args, **kwargs):
search = request.GET.get('search')
user = request.user.staffs.full_name
current_month = datetime.date.today().month
current_year = datetime.date.today().year
payroll_list = VaPayroll.objects.all()
payroll_data = payroll_list.filter(Q(virtual_assistant=user),
Q(date__month=current_month),
Q(status='APPROVED-BY-THE-MANAGER'))
total_salary = VaPayroll.objects.filter(Q(virtual_assistant=user),
Q(date__month=current_month),
Q(status='APPROVED-BY-THE-MANAGER'),
Q(date__year=current_year)).aggregate(Sum('salary'))
if search:
payroll_data = payroll_list.filter(Q(virtual_assistant=user),
Q(status='APPROVED-BY-THE-MANAGER'),
Q(date__icontains=search))
total_salary = VaPayroll.objects.filter(Q(virtual_assistant=user),
Q(status='APPROVED-BY-THE-MANAGER'),
Q(date__month=search),
Q(date__year=current_year)).aggregate(Sum('salary'))
context = {
'total_salary': total_salary,
'payroll_data': payroll_data
}
return render(request, self.template_name, context)
这是来自我的 serializers.py
class VaPayrollSerializer(serializers.ModelSerializer):
total_salary = serializers.SerializerMethodField()
class Meta:
model = VaPayroll
fields = '__all__'
def get_total_salary(self, obj):
user = self.context['request'].user.staffs.full_name
totalsalary = VaPayroll.objects.filter(Q(status='APPROVED-BY-THE-MANAGER'),
Q(virtual_assistant=user),
Q(date__month=datetime.date.today().month),
Q(date__year=datetime.date.today().year)).aggregate(total_salary=Sum('salary'))
return totalsalary['total_salary']
这是来自我的模型视图集的get_queryset
def get_queryset(self):
current_month = datetime.date.today().month
current_year = datetime.date.today().year
queryset = VaPayroll.objects.filter(Q(virtual_assistant=self.request.user.staffs.full_name),
Q(date__month=current_month),
Q(date__year=current_year))
return queryset
在我计划的用例中,我希望在我的 API 中有一个包含所有工资总和的列,这样我就可以在前端单独调用该字段,而无需刷新页面来重新计算总工资。或者这是正确的方法吗?或者我应该坚持使用视图来重新计算总工资。