Django 使用 modelformset 组件批量修改表单数据

１．ｍｏｄｅｌｓ．ｐｙ：

class StudentStudyRecord(models.Model):    ‘‘‘    学生学习记录    ‘‘‘    student = models.ForeignKey(verbose_name="学员", to=‘Student‘,on_delete=models.CASCADE)    classstudyrecord = models.ForeignKey(verbose_name="第几天课程", to="ClassStudyRecord",on_delete=models.CASCADE)    record_choices = ((‘checked‘, "已签到"),                      (‘vacate‘, "请假"),                      (‘late‘, "迟到"),                      (‘noshow‘, "缺勤"),                      (‘leave_early‘, "早退"),                      )    record = models.CharField("上课纪录", choices=record_choices, default="checked", max_length=64)    score_choices = ((100, ‘A+‘),                     (90, ‘A‘),                     (85, ‘B+‘),                     (80, ‘B‘),                     (70, ‘B-‘),                     (60, ‘C+‘),                     (50, ‘C‘),                     (40, ‘C-‘),                     (0, ‘ D‘),                     (-1, ‘N/A‘),                     (-100, ‘COPY‘),                     (-1000, ‘FAIL‘),                     )    score = models.IntegerField("本节成绩", choices=score_choices, default=-1)    homework_note = models.CharField(verbose_name=‘作业评语‘, max_length=255, blank=True, null=True)    note = models.CharField(verbose_name="备注", max_length=255, blank=True, null=True)

    homework = models.FileField(verbose_name=‘作业文件‘, blank=True, null=True, default=None)    stu_memo = models.TextField(verbose_name=‘学员备注‘, blank=True, null=True)    date = models.DateTimeField(verbose_name=‘提交作业日期‘, auto_now_add=True)

    def __str__(self):        return "{0}-{1}".format(self.classstudyrecord, self.student)

    class Meta:        unique_together=["student","classstudyrecord"]

２．ｖｉｅｗｓ．ｐｙfrom django.forms import modelform＃对学生记录表建立一个ｍｏｄｅｌｆｏｒｍclass StudentStudyRecordForm(forms.ModelForm):    class Meta:        model = models.StudentStudyRecord        fields = ["score","homework_note"] #要在前端修改的字段

＃批量修改的学生成绩视图类class RecordScoreView(View):

    def get(self, request, csr_id):

        from django.forms.models import modelformset_factory＃导入组件！

        model_formset_cls = modelformset_factory(model=models.StudentStudyRecord,form=StudentStudyRecordForm,extra=0)＃把数据库表实例化一个对象

        queryset = models.StudentStudyRecord.objects.filter(classstudyrecord=csr_id)

        formset = model_formset_cls(queryset=queryset)

        return render(request, ‘student/record_score.html‘, locals())

    def post(self, request, csr_id):        from django.forms.models import modelformset_factory        model_formset_cls = modelformset_factory(model=models.StudentStudyRecord,form=StudentStudyRecordForm,extra=0)        queryset = models.StudentStudyRecord.objects.filter(classstudyrecord=id)        formset = model_formset_cls(request.POST)＃提交ｐｏｓｔ请求，校验成功直接保存．        if formset.is_valid():            formset.save()        return self.get(request, csr_id=csr_id)

３．ｈｔｍｌ：

    <div class="panel panel-default">        <div class="panel-heading">学习记录</div>        <div class="panel-body">            <div style="width: 680px;margin: 0 auto;">                <form method="post" action="">                    {% csrf_token %}                    {{ formset.management_form }}　　＃后端使用ｍｏｄｅｌｆｏｒｍｓｅｔ组件时，前端必须加上这一句话！

                    <table class="table table-bordered">                        <thead>                        <tr>                            <th>姓名</th>                            <th>考勤</th>                            <th>作业成绩</th>                            <th>作业评语</th>                        </tr>                        </thead>                        <tbody>                        {% for form in formset %}                            <tr>                                {{ form.id }}                                <td>{{ form.instance.student }}</td>　　　＃ｉｎｓｔａｎｃｅ加上，前端渲染的页面就没有这个修改项                                <td>{{ form.instance.get_record_display }} </td>                                <td>{{ form.score }} </td>                                <td>{{ form.homework_note }}</td>                            </tr>                        {% endfor %}                        </tbody>                    </table>                    <input type="submit" value="保存" class="btn-danger">                </form>            </div>        </div>

    </div></div>

原文地址：https://www.cnblogs.com/cou1d/p/12208429.html