Django 练习班级管理系统五 -- 查看老师列表

Posted 2022-03-17 klvchen

models.py 对应的配置

class Classes(models.Model):
    caption = models.CharField(max_length=32)

class Teacher(models.Model):
    name = models.CharField(max_length=32)
    cls = models.ManyToManyField('Classes')

修改 views.py

@auth
def handle_teacher(request):
    current_user = request.session.get('username')

    # teacher_list = models.Teacher.objects.all()
    # for obj in teacher_list:
    #     print(obj.id, obj.name, obj.cls.all())

    # 分页，获取第一页5位老师对应的记录
    teacher_list = models.Teacher.objects.filter(id__in=models.Teacher.objects.all()[0:5]).values('id', 'name', 'cls__id', 'cls__caption')
    result = 
    for t in teacher_list:
        # 判断是否已在 result 中
        if t['id'] in result:
            # 判断 cls__id 的值是否为空
            if t['cls__id']:
                result[t['id']]['cls_list'].append('id': t['cls__id'], 'caption': t['cls__caption'])
        else:
            # cls__id 有值
            if t['cls__id']:
                temp = ['id': t['cls__id'], 'caption': t['cls__caption'],]
            else:
                # cls__id 没值
                temp = []
            # 给 result 字典添加值
            result[t['id']] = 
                'nid': t['id'],
                'name': t['name'],
                'cls_list': temp
            

    return render(request, 'teacher.html', 'username': current_user, 'teacher_list': result)

修改 teacher.html

% extends "layout.html" %

% block css %

        .tag
            display: inline-block;
            padding: 5px;
            border: 1px solid red;
            background-color: lightpink;
            cursor: pointer;
        

% endblock %

% block content %

    <h1>老师列表</h1>
    <table border="1">
        <thead></thead>
        <tbody>
            % for dic in teacher_list.values %
                <tr>
                    <td> dic.nid </td>
                    <td> dic.name </td>
                    <td>
                        % for c in dic.cls_list %
                            <span class="tag" nid=" c.id "> c.caption </span>
                        % endfor %
                    </td>
                </tr>
            % endfor %
        </tbody>
    </table>
% endblock %

% block js %
    <script>
        $(function () 
            $('#menu_teacher').addClass('active');

        )
    

    </script>
% endblock %