模型表单

模型表单

　　1、首先在app文件夹中创建一个 forms.py 文件

　　2、在 forms.py 中编写模型表单，如下：

from django import forms
from .models import ShopInfo,Invest    #表示导入模型文件中的模型类

class ShopInfoForm(forms.ModelForm): #继承模型表单的基类
    class Meta:
        model = ShopInfo  #指定当前表单是由哪个模型类生成的,所有字段都会被渲染
        #  fields = ['']     #表示要渲染的哪几个字段可以用列表形式 fields = [' ']
        exclude = ['logic_delete']    #表示哪个字段不用渲染的用 exclude = [' '],  这个就表示logic_delete字段不用渲染

class InvestForm(forms.ModelForm):
    class Meta:
        model = Invest
        exclude = ['shop_info']    #表示这个字段是一对一的字段，所以不需要

 3、编写views.py  视图

from .forms import ShopInfoForm, InvestForm

def new_shop_info_add(request):
    section = '添加店铺信息'
    if request.method == "GET":
        shop_info_from = ShopInfoForm()
        invest_from = InvestForm()
        context={
            'from': shop_info_from,
            'section': section,
            'invest_from': invest_from,
        }
        return render(request,'shopincomes/new_shopinfo_add.html',context=context)

    if request.method == "POST":
        shop_info_from = ShopInfoForm(request.POST)
        invest_from = InvestForm(request.POST)
        if shop_info_from.is_valid() and invest_from.is_valid():
            shop_info = shop_info_from.save()  # 真保存，已保存到数据库
            invest = invest_from.save(commit=False)
            shop_info.invest = shop_info
            invest.save()
            return redirect(reverse('shopincomes:shop_info_view'))
        return render(request,'shopincomes/new_shopinfo_add.html',context={
            'from': shop_info_from,
            'section': section,
            'invest_from': invest_from,
        })

4、创建一个new_shopinfo_add.html文件

{% extends 'shopincomes/base.html' %}
{% block title %}添加店铺信息{% endblock title %}
{%  block info %}
    <h2 class="sub-header">{{ section }}</h2>

<form class="active" method="post">
    {% for field in from %}
        <div class="form-group">
            <label class="col-sm-1 control-label" for="{{ field.id_for_label }}">{{ field.label }}</label>
                {{ field }}
        </div>
    {% endfor %}

{% for field in invest_from %}
    <div class="form-group">
        <label class="col-sm-1 control-label" for="{{ field.id_for_label }}">{{ field.label }}</label>
            {{ field }}
    </div>
{% endfor %}

    <div class="form-group">
        <button type="submit" class="btn btn-primary" value="保存" style="width:100px;margin-top: 100px;margin-left: 300px">保存</button>
    </div>
</form>
{% endblock info %}

5、配置url路由

　　path('incomes/add/new/', views.new_shop_info_add, name='new_shop_info_add'),