Django：上一周和下一周按钮

Question

我正在创建一个时间表应用程序。我想每周显示时间表，我可以做到。 我已经创建了上一周和下一周的按钮。

我应该使用什么方法，这样当有人点击前一周时，它会显示前一周的时间表，下周也一样。

注意 - 我有一个时间表，其中每天包含一个时间条目。

models.py --

class TimeRecords(models.Model):
    emp_id = models.IntegerField(verbose_name = 'Employee ID')
    ts_date = models.DateField(null=False, blank=False,verbose_name = 'Time Sheet Date')
    ts_effort = models.PositiveIntegerField(default=8,verbose_name = 'Hours worked')
    ts_desc = models.CharField(max_length=200,verbose_name = 'Time Description')

    class Meta:
        verbose_name = 'Time Records'
        verbose_name_plural = 'Time Records'
        unique_together = (("emp_id", "ts_date"),)
        ordering = ["-emp_id"]

    def __str__(self):
        return self.ts_desc

forms.py ---

class CreateTimeSheetForm(forms.ModelForm):     

    emp_id = forms.IntegerField(widget=forms.HiddenInput(), initial=123) 

    class Meta:
        model = TimeRecords
        fields = '__all__'
        labels = {
        "ts_desc": "Task Description"
            }
        widgets = {
        'ts_date': forms.TextInput(attrs={'readonly': True}),
        }

views.py ---

def dateEnds():
    date=datetime.date.today()
    year, week, dow = date.isocalendar()
    if dow == 1:
        start_date = date
    else:
        start_date = date - timedelta(dow)
    end_date = start_date + datetime.timedelta(days=7)
    return start_date ,end_date

def daterange():
    start_date, end_date=dateEnds()
    for n in range(int((end_date - start_date).days)):
        yield start_date + timedelta(n)

def timeEntryList(request):
    start_date, end_date=dateEnds()
    time_records=TimeRecords.objects.filter(emp_id=emp_id,ts_date__range= 
    (start_date, end_date))
    context = {'time_records': time_records}
    return render(request, 'timesheets/list.html', context)

list.html --

<tr> <th > Date</th> <th> Efforts</th> <th> Description</th> <th> Action</th> </tr>

                {% for time_record in time_records %} 
                <tr>
                    <td >{{ time_record.ts_date|date:"SHORT_DATE_FORMAT" }}</td>
                    <td>{{ time_record.ts_effort }}</td>
                    <td>{{ time_record.ts_desc }}</td>
                    <td ><a href="../{{time_record.id}}/edit">Edit</a> <a href="../{{time_record.id}}/delete/">Delete</a></td>                  
                </tr> 
                {% endfor  %}
              </table>   
            <a href="/timesheets/view" ><button type="button" class="btn" >Previous Week</button></a>

Answer 1

这就是我处理这个问题的方法。

在models.py，

class TimeRecord(models.Model):
    ts_date = models.DateTimeField()

    # Other fields

    def get_week(self):
        return self.ts_date.isocalendar()[1]

在views.py 中，我会使用列表推导来获取前一周和下周的时间记录。

from django.utils import timezone

def my_view(request):

    context = dict()

    time_records = TimeRecord.objects.all()
    current_week = timezone.now().isocalendar()[1]
    current_records = [time_record for time_record in time_records if time_record.get_week() == current_week]

    if request.method == 'POST':
        week = request.POST['week']

        if week == 'next-week':
            current_records = [time_record for time_record in time_records if
                               time_record.get_week() == current_week + 1]

        if week == 'last-week':
            current_records = [time_record for time_record in time_records if
                               time_record.get_week() == current_week - 1]

    context['current_records'] = current_records

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

最后，在模板中，我将在下周和前一周使用隐藏的表单输入。

<div>
    {% for record in current_records %}
        <p># {{ forloop.counter }} {{ record.ts_date }}</p>
    {% endfor %}

    <form action="" method="post">
        {% csrf_token %}
        <input type="hidden" name="week" value="next-week">
        <button type="submit">next week</button>
    </form>

      <form action="" method="post">
        {% csrf_token %}
        <input type="hidden" name="week" value="last-week">
        <button type="submit">last week</button>
    </form>

</div>