如何从表中以一个月天为表头的模型中检索数据？

Question

我是 Django 新手，正在尝试将模型中的数据检索到 html 表中。本质上，我想在用户选择的特定月份检索所有教师及其出勤状态（出席、缺席和迟到）。 能够将上下文从视图传递给模板 这是我的代码

models.py

class TeacherAttendance(models.Model):
teacher = models.ForeignKey(Teacher, on_delete=models.CASCADE, blank=False, null=True)
date = models.DateField()
status = models.CharField(max_length=50, choices=ATTENDANCE)
objects = models.Manager()

class Meta:
    default_permissions = ('view', 'add', 'change', 'delete')
    ordering = ["date", ]
    get_latest_by = "date"

views.py

def teacher_attendance_report(request):
context = {}
form = TeacherAttendanceForm(request.POST)
if request.method == 'POST':
    if request.POST.get('group_by'):
        grab_data_passed = request.POST.get('group_by')
        get_details = TeacherAttendance.objects.filter(date__month=grab_data_passed)
        z=0
        range=9
        days=[]
        if z< range:
            dats = TeacherAttendance.objects.filter(date__month=grab_data_passed)[z].date
            z+=1
            y=dats.month
            x=dats.year
            cal = calendar.TextCalendar(calendar.WEDNESDAY)
            for day in cal.itermonthdays(x, y):
               days.append(day) 
        context['days']=days
        teacher = User.objects.filter(is_teacher=True)
        for i in teacher:
            x=i.id
            get_details = TeacherAttendance.objects.filter(teacher__user=x, date__month=grab_data_passed)
        context['get_details']=get_details  
        return render(request, 'Reports/teacher_attendance_report_details.html', context)
context={'form':form}
return render(request, 'Reports/teacher_attendance_report_index.html', context)

我不知道这是否是在视图函数中检索数据的最佳 Python 方式。

这是我的

模板

 <table id="datatable-responsive"
                           class="datatable-responsive table table-striped table-bordered dt-responsive nowrap" cellspacing="0" width="100%">
                        <thead>
                         <tr>   
                        <th>Teacher <i class="fa fa-long-arrow-down" z></i> - Date <i class="fa fa-long-arrow-right"></i></th>
                            <th>{{days}}</th>
                        </tr>
                        </thead>
                        <tbody>
                        {% for details in get_details %}
                            <tr>
                                <td>{{ details.teacher }}</td>
                                <td>{{ details.status }}</td>
                            </tr>
                            {% if empty %}
                                <tr>
                                    <td colspan="9" class="text-center bg-warning">No Data</td>
                                </tr>
                            {% endif %}
                        {% endfor %}
                        </tbody>
                    </table>

目前这是我在浏览器中得到的

我想实现类似于

任何建议或代码重组以实现预期目标都很好，谢谢。

Answer 1

好吧，您需要将所有信息存储在一个列表中。例如：

get_all_details = list()
for i in teacher:
    x=i.id
    get_all_details.append(TeacherAttendance.objects.filter(teacher__user=x, date__month=grab_data_passed))

并在模板中渲染：

context['get_all_details']=get_all_details  

并更新模板：

{% for get_details in get_all_details %}
    {% for details in get_details %}
       <tr>
          <td>{{ details.teacher }}</td>
          <td>{{ details.status }}</td>
       </tr>
       {% if empty %}
        <tr>
             <td colspan="9" class="text-center bg-warning">No Data</td>
        </tr>
       {% endif %}
    {% endfor %}
{% endfor %}

Answer 2

试试

<th>{% for day in days %}{{day}}{% endfor %}</th>

而不是

<th>{{days}}</th>

之后，您需要将教师列表发送到视图中的上下文 像

teacher = User.objects.filter(is_teacher=True)
context['teachers'] = teacher

然后在你的html中尝试

<tbody>
   {% for teacher in teachers %}
     <tr>
       <td>{{ teacher }}</td>
       {% for details in get_details %}
       {% for day in days %}
         {% if detail.teacher == teacher and detail.date|date:'d' == day %}<td>{{ detail.status }}</td>{% else %}<td>--</td>{% endif %}
       {%endfor%}
       {%endfor%}
      </tr>
</tbody>

您必须更改的一件事是您需要另一种格式的日期列表 它必须是 [01,02,03,04, .. 10, .. 20, .. 30]