Django中利用modelformset_factory实现批量添加操作

完整项目链接：https://www.cnblogs.com/WiseAdministrator/articles/11073919.html

　　urls.py文件：

from django.conf.urls import url
from django.contrib import admin
from web.views import control, customer, enrollment, my_customer, record, student

urlpatterns = [

# 学生学习记录信息
url(r'^study_record/(\d+)/', student.StudyRecordDeialView.as_view(), name='study_record'),

]

　　forms.py文件:

from django import forms
from web import models


# 学生学习记录ModeForm
class StudyRecordDeialModelForm(forms.ModelForm):
    class Meta:
        model = models.StudentStudyRecord
        # fields = '__all__'
        fields = ['score', 'homework_note']

    def __init__(self, *args, **kwargs):
        super(StudyRecordDeialModelForm, self).__init__(*args, **kwargs)
        for field in self.fields:
            self.fields[field].widget.attrs.update({
                "class": "form-control",
            })

　　views.py文件:

from web import models
from django.views import View
from django.shortcuts import redirect, render, HttpResponse, reverse
from django.forms.models import modelformset_factory   # queryset
from web.forms.studyrecord_form import StudyRecordDeialModelForm

# 学生学习记录信息
class StudyRecordDeialView(View):
    def get(self, request, class_record_id):
        # 通过当前学生记录id找到班级记录对象
        class_record_obj = models.ClassStudyRecord.objects.get(pk=class_record_id)

        # 找到班级记录找到对应的所有的学生记录
        all_study_recored = models.StudentStudyRecord.objects.filter(
            classstudyrecord=class_record_obj,
        )

        # 创建一个modelformset_factory对象(model=学生记录，form=modelform，extra=默认参数)
        form_set_obj = modelformset_factory(model=models.StudentStudyRecord, form=StudyRecordDeialModelForm, extra=0)
        # 通过创建的modelformset_factory创建的对象(queryset=学生记录对象)
        formset = form_set_obj(queryset=all_study_recored)

        return render(request, 'student/study_record_detail.html', {'formset': formset})

    def post(self, request, class_record_id):
        # 创建一个modelformset_factory对象(model=学生记录，form=modelform，extra=默认参数)
        form_set_obj = modelformset_factory(model=models.StudentStudyRecord, form=StudyRecordDeialModelForm, extra=0)

        # 对象中保存request.POST
        formset = form_set_obj(request.POST)

        # formset调用is_valid方法
        if formset.is_valid():
            # 保存formset.save方法
            formset.save()
        else:
            # 否则打印错误信息
            print(formset.errors)
        # 重定向
        # return redirect(reverse('study_record', args=(class_record_id,)))
        return redirect(reverse("class_record"))

　　html文件：

　　注意：加上{{ formset.management_form }} 这句，固定格式写法

{% extends 'base.html' %}


{# formset版本 #}
{% block header %}
    <h1>学习记录详情！</h1>
{% endblock header %}

{% block content %}
    <section class="content">
        <div class="row">
            <div class="col-xs-12">
                <div class="box">
                    <div class="box-header">

                        <form method="post" action="">
                            {% csrf_token %}
                            {{ formset.management_form }}  <!-- 这句话一定要加上，固定的写法 -->

                            <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" class="btn btn-success" value="保存">
                        </form>

                    </div>
                    <!-- /.box-batch-manager -->
                </div>
                <!-- /.box -->
            </div>
            <!-- /.col -->
        </div>
        <!-- /.row -->
    </section>
    {{ ret_html|safe }}
{% endblock content %}