Django组件之modelformset

ModelFormSet 基于modelform 实现的批量处理

前端:

<form method="post" action="">
                    {% csrf_token %}
                    {{ formset.management_form }}

                    <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>
                                <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">
                </form>

在前端中使用的时候需要注意:  {{ formset.management_form }} 这行代码必须加入。

视图与form:

from django.forms.models import modelformset_factory


class StudentStudyRecordModelForm(forms.ModelForm):
    class Meta:
        model=StudentStudyRecord
        fields=["score","homework_note"]

class RecordScoreView(View):

    def get(self, request,class_study_record_id):

        model_formset_cls=modelformset_factory(model=StudentStudyRecord,form=StudentStudyRecordModelForm,extra=0)
        queryset = StudentStudyRecord.objects.filter(classstudyrecord=class_study_record_id)
        formset = model_formset_cls(queryset=queryset)
        return render(request,"student/record_score.html",locals())

    def post(self, request,class_study_record_id):
        model_formset_cls = modelformset_factory(model=StudentStudyRecord, form=StudentStudyRecordModelForm, extra=0)
        queryset = StudentStudyRecord.objects.filter(classstudyrecord=class_study_record_id)
        print("request.POST",request.POST)
        formset=model_formset_cls(request.POST)  # 实例化对象
        if formset.is_valid():
            formset.save()

        print(formset.errors)

        return redirect(request.path)

也就是说使用时需注意 modelformset_factory()中有两个参数必须给值，model绑定的是模型表，form绑定的是与之相关的modelform，