Django重新整理4---ModelForm-set(批量处理数据)

1.

#引用modelformset
from django.forms.models import modelformset_factory
#必须继承forms.ModelForm！
class StudentStudyRecordModelForm(forms.ModelForm):
    class Meta:
#需要建立关联的表StudentStudyRecord
        model = StudentStudyRecord
#score", "homework_note  显示的字段
        fields = ["score", "homework_note"]

2.

class RecordScoreView(View):
    def get(self, request, class_study_record_id):
        # modelformset_factory固定的写法 ，model=StudentStudyRecord这是需要关联的表名，form后边是我们上边的新建类名 ，  extra=0  不加它默认数据多一行
        model_formset_cls = modelformset_factory(model=StudentStudyRecord, form=StudentStudyRecordModelForm, extra=0)
        queryset = StudentStudyRecord.objects.filter(classstudyrecord=class_study_record_id)
        print(class_study_record_id)   #2 第2天的课程
        print("queryset",queryset)   #查询第2天课程的学生记录
        formset = model_formset_cls(queryset=queryset)
        return render(request, "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)
        #??????????????????????????????//
        print("formset",formset)
        print(123456789)
        #判断是否通过校验
        if formset.is_valid():
            formset.save()
        # print(formset.errors)
        return redirect(request.path)

3.

#record_score.html
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <link rel="stylesheet" href="/static/bootstrap/css/bootstrap.min.css">
</head>
<body>

<h3>录入{{ class_study_record_obj.class_obj }}day{{ class_study_record_obj.day_num }}成绩</h3>

 <div class="panel panel-default">
        <div class="panel-heading">学习记录</div>
        <div class="panel-body">
            <div style="width: 700px;margin: 0 auto;">
                <form method="post" action="">
                    {% csrf_token %}
                            {# 固定的写法#}
                    {{ 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>
            </div>
        </div>
    </div>
</body>
</html>