Django 表单字段必填和可选配置

在‘def servChoices’中删除了SERVICE_INSTERESTED，因为我在模型中没有访问它们的权限.我还返回一个类名为‘CustomersModels’的字符串，这样您就可以编辑、删除包含空值的记录. 字段类‘CUSTOMER_NAME’、‘COMP_NAME’、‘WEBS_NAME’被设置为BLACK=True以使它们成为可选的.

在NoForm中，必填字段为‘ph_no’.YesForm要求填写所有字段.为此，使用了验证器(CLEAN)，它将在页面上显示未填写的字段的消息(在填写完所有字段之前，不会发送表单).你可以读到关于清洁here:的文章

In the bboard views, replace with your folder where you have the templates (this is the string template_name = 'bboard/templ_yes.html').个

Urls.py

urlpatterns = [
    path('yes/', YesCreateView.as_view(), name='yes'),
    path('no/', NoCreateView.as_view(), name='no'),
]

Views.py

from django.views.generic.edit import CreateView
from django.urls import reverse_lazy
from .forms import NoForm, YesForm

class NoCreateView(CreateView):
    template_name = 'bboard/templ_no.html'
    form_class = NoForm
    success_url = reverse_lazy('no')

    def get_context_data(self, **kwargs):
        context = super().get_context_data(**kwargs)
        return context

class YesCreateView(CreateView):
    template_name = 'bboard/templ_yes.html'
    form_class = YesForm
    success_url = reverse_lazy('yes')

    def get_context_data(self, **kwargs):
        context = super().get_context_data(**kwargs)
        return context

Forms.py

from django.forms import ModelForm
from .models import CustomersModels
from django.core.exceptions import ValidationError

class YesForm(ModelForm):
    class Meta:
        model = CustomersModels
        fields = ('customer_name', 'comp_name', 'ph_no', 'webs_name')

    def clean(self):
        cleaned_data = super().clean()
        customer_name = cleaned_data.get('customer_name')
        comp_name = cleaned_data.get('comp_name')
        webs_name = cleaned_data.get('webs_name')

        if len(customer_name) <= 0 or customer_name == '':
            raise ValidationError(
                "fill in the field customer_name"
            )
        if len(comp_name) <= 0 or comp_name == '':
            raise ValidationError(
                "fill in the field comp_name"
            )
        if len(webs_name) <= 0 or webs_name == '':
            raise ValidationError(
                "fill in the field webs_name"
            )
            
class NoForm(ModelForm):
    class Meta:
        model = CustomersModels
        fields = ('customer_name', 'comp_name', 'ph_no', 'webs_name')

Models.py

class CustomersModels(models.Model):
    customer_name = models.CharField(max_length=100, blank=True)
    comp_name = models.CharField(max_length=100, blank=True)
    ph_no = models.CharField(max_length=12)
    webs_name = models.URLField(max_length=200, blank=True)

    def __str__(self):
        return 'CustomersModels'

Tepmplate(templ_yes.html)

<h2>form</h2>
<form method="post" action="{% url 'yes'%}">
      {% csrf_token %}
      {{ form.as_p }}
      <input type="submit" value="adding">
</form>

Tepmplate(templ_no.html)

<h2>form</h2>
<form method="post" action="{% url 'no'%}">
      {% csrf_token %}
      {{ form.as_p }}
      <input type="submit" value="adding">
</form>