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python - 创建填充表单的新模型对象

问题描述

我之前发表了另一篇关于此的帖子，但我认为我解释错了。我的班级名为“Empresa”。该网页的用户可以通过在视图中填充 ModelForm 来注册他们自己的公司（“Empresa”）。问题是我在任何地方都找不到语法。我有：

模型.py：

from django.db import models


class EmpresaManager(models.Manager):
    def create_empresa(self):
        empresa = self.create()
        return empresa


class Empresa(models.Model):
    codigo = models.CharField(max_length=3, null=False, default='000')
    nombre = models.CharField(max_length=100, null=False, default='Sin nombre')
    email = models.EmailField(null=False, default='email@empresa.com')
    direccion = models.CharField(max_length=100, null=False, default='Sin direccion')
    localidad = models.CharField(max_length=100, null=False, default='Sin localidad')
    codDgi = models.SmallIntegerField(null=True)
    docDgi = models.CharField(max_length=13, null=True)
    sIva = models.CharField(max_length=1, null=True, default='1')
    mesCierre = models.IntegerField(null=True, default=0)
    fecIni = models.DateField(null=True)
    ruca = models.IntegerField(null=True)
    novedad = models.CharField(max_length=50, null=True, default='')
    fecNovedad = models.DateTimeField(null=True)
    ultVersion = models.CharField(max_length=20, null=True, default='')
    logo = models.ImageField(null=True)
    habilitado = models.CharField(max_length=1, null=True, default='S')
    codEmpresa = models.CharField(max_length=3, null=True)
    codComp = models.CharField(max_length=3, null=True, default='')

    objects = EmpresaManager()

表格.py：

from django import forms
from django.forms import ModelForm
from .models import Empresa


class RegistroEmpresaForm(ModelForm):
    class Meta:
        model = Empresa
        fields = ["nombre", "docDgi", "email"]

视图.py：

from django.shortcuts import render
from Empresa.forms import RegistroEmpresaForm
from Empresa.models import Empresa
from django.http import HttpResponse


def registrado(request):
    form = RegistroEmpresaForm(request.POST or None)
    titulo = "Registro SIG | ERZ Software"
    context = {
        "form": form,
        "titulo": titulo,
    }
    empresa = Empresa.objects.create_empresa()
    empresa.nombre = form.cleaned_data.get('nombre')
    empresa.docDgi = form.cleaned_data.get('docDgi')
    empresa.email = form.cleaned_data.get('email')
    empresa.save(nombre=empresa.nombre, docDgi=empresa.docDgi, email=empresa.email)
    return HttpResponse("Gracias por registrarse.")


def registro(request):
    form = RegistroEmpresaForm(request.POST or None)
    titulo = "Registro SIG | ERZ Software"
    context = {
        "form": form,
        "titulo": titulo,
    }
    return render(request, "registro.html", context)

registro.html：（部分）

    </style>
    <!-- Custom styles for this template -->
    <link href="{% static 'css/SIG.css' %}" rel="stylesheet">
  </head>
  <body class="text-center">
  {% block content %}
<form class="form-signin" method="POST" action="registrado" enctype="application/x-www-form-urlencoded">{%  csrf_token %}
    <img class="mb-4" src="/docs/4.2/assets/brand/bootstrap-solid.svg" alt="" width="72" height="72">
    <h1 class="h3 mb-3 font-weight-normal">Panel de registro</h1>
    {{ form }}
    <button class="btn btn-lg btn-primary btn-block" type="submit">Registrarme</button>
    <p class="mt-5 mb-3 text-muted">&copy; ERZSoftware 2019 - Todos los derechos reservados</p>
</form>
  {% endblock %}
    <script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.6/umd/popper.min.js" integrity="sha384-wHAiFfRlMFy6i5SRaxvfOCifBUQy1xHdJ/yoi7FRNXMRBu5WHdZYu1hA6ZOblgut" crossorigin="anonymous"></script>
    <script src="https://stackpath.bootstrapcdn.com/bootstrap/4.2.1/js/bootstrap.min.js" integrity="sha384-B0UglyR+jN6CkvvICOB2joaf5I4l3gm9GU6Hc1og6Ls7i6U/mkkaduKaBhlAXv9k" crossorigin="anonymous"></script>
</body>
</html>

我知道我的观点有问题，问题是我找不到语法。 我知道如何使用 ModelForm 填充视图，但我无法使用 ModelForm 中的填充数据创建新的 empresa 对象。我会很感激任何帮助，谢谢！！

标签： pythonhtmldjango

解决方案

这是记录在案的：

每个 ModelForm 也有一个 save() 方法。此方法从绑定到表单的数据中创建并保存一个数据库对象。ModelForm 的子类可以接受现有模型实例作为关键字参数实例；如果提供了这个， save() 将更新该实例。如果未提供， save() 将创建指定模型的新实例：

另请注意，您应该对 GET 和 POST 请求使用相同的视图 - django 中的规范“表单”视图函数如下所示：

def myview(request):
    if request.method == "POST":
       form = MyModelForm(request.POST)
       if form.is_valid():
          my_instance = form.save()
          # you can redirect wherever you want, 
          # as long as you redirect - cf 
          # https://en.wikipedia.org/wiki/Post/Redirect/Get
          # You may also want to use tyhe messages framework
          # to notify the user the action has been succesful
          return redirect(my_instance.get_absolute_url()) 
   else: 
      # GET method, provide an empty form
      form = MyModelForm()
   return render(request, "mytemplate.html", {"form": form})

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