根据输入的日期过滤计算收入和费用

Question

我有一个日期选择器，我会根据这个日期计算收入和支出。我想在 view.py 中的函数中添加一个名为 random_date 的参数。我希望用户设置结束日期。开始时间将是今天的日期。例如，如果用户选择了 6 月 1 日作为日期，我想将今天到 6 月 1 日的收入和支出相加。我该怎么做？

这是我的 views.py 文件：

import datetime
from django.shortcuts import render
from incomes.models import Income, Source
from expenses.models import Expense, Category
from .models import SummaryModel


# Create your views here.
def Summary(request):
    todays_date = datetime.date.today()
    six_months_later = todays_date + datetime.timedelta(days=180)
    all_expenses = Expense.objects.filter(owner=request.user, date__gte=todays_date, date__lte=six_months_later)
    all_incomes = Income.objects.filter(owner=request.user, date__gte=todays_date, date__lte=six_months_later)

    def get_amount(EorI):
        amount = 0
        for item in EorI:
            amount += item.amount
        return amount

    final_rep = {'Net_Income' : get_amount(all_incomes) - get_amount(all_expenses)}
    return render(request, 'summary.html', final_rep)

这是我的 summary.html 文件：

<div class="card">
    <div class="card-body">
        </select>
        <div class="form-group">
            <label for="">Choose a date</label>
            <input type="date" value="{{values.date | date:'Y-d-m'}}" class="form-control form-control-sm" name="random_date" />
        </div>

        <input type="submit" value="Submit" class="btn btn-primary btn-primary-sm" />

        <div class="container">
            <div class="col s12 m12 l4">
                <div class="card-panel">
                    <h8 class="bold">Net Budget</h8>
                    <h1 class="bold">${{ Net_Income }}</h1>
                </div>
            </div>
        </div>
    </div>
    </form>
</div>
</div>

Answer 1

您可以像这样从您的请求中访问 POST 或 GET 参数：

request.GET.get('my_var')
request.POST.get('my_var')

您的 summary.html 示例省略了您的表单开始标记，因此这里是您可以使用的视图，假设您正在 POST 向您的视图发送信息：

def Summary(request):
    todays_date = datetime.date.today()
    six_months_later = todays_date + datetime.timedelta(days=180)

    random_date = request.POST.get('random_date')

    all_expenses = Expense.objects.filter(owner=request.user, date__gte=todays_date, date__lte=six_months_later)
    all_incomes = Income.objects.filter(owner=request.user, date__gte=todays_date, date__lte=six_months_later)

    context = {'Net_Income' : get_amount(all_incomes) - get_amount(all_expenses)}

    if random_date:
       filtered_expenses = Expense.objects.filter(owner=request.user, date__gte=todays_date, date__lte=random_date)
       filtered_incomes = Income.objects.filter(owner=request.user, date__gte=todays_date, date__lte=random_date)
       context['Filtered_Income'] = get_amount(filtered_incomes) - get_amount(filtered_expenses)

    def get_amount(EorI):
        amount = 0
        for item in EorI:
            amount += item.amount
        return amount

    
    return render(request, 'summary.html', context)

新值将在您的模板中作为 Filtered_Income 提供，但前提是用户 POST 编辑了日期，因此您需要使用类似 {% if Filtered_Income %}[=15 的内容=]

根据输入的日期过滤计算收入和费用

Calculating income and expense by filtering according to the entered date

python

django