Django form fields required and optional configuration-CodePudding

I am in a middle of a project. I have a model :-

                class CustomersModels(models.Model):
                def servChoices(servs):
                    lst = [x.serv_name for x in servs]
                    ch =()
                    for a in lst:
                        ch  = (a,a),
                    return ch

                customer_name = models.CharField(max_length=100)
                comp_name = models.CharField(max_length=100)
                ph_no = models.CharField(max_length=12)
                webs_name = models.URLField(max_length=200)
                service_insterested = models.OneToOneField(ServiceModel, on_delete = models.CASCADE)

                def __str__(self):
                    return self.customer_name

I have a corresponding form for this model. Now what i want is the fields customer_name, comp_name, webs_name to be optional in one page. And required in another page. Please guide me to establish the task in the most convenient manner

CodePudding user response：

Deleted in 'def servChoices', service_insterested because I don't have access to them in the model. I also made it to return a string with the name of the class return 'CustomersModels', so that you can edit, delete records with empty values. The field class 'customer_name', 'comp_name' ,'webs_name' are set to blank=True to make them optional.

In the NoForm, the required field is 'ph_no'. YesForm requires all fields to be filled in. For this, a validator (clean) is used, which will display a message on the page which field is not filled in (the form will not be sent until all fields are filled). You can read about clean here:

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

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>