python Django：在表单中传递一个禁用选择字段的值

Posted 2021-05-10

from django.views.generic import CreateView

from contract.models import AssertRequest
from contract.forms import AssertRequestForm
from customer.utils import get_current_customer


class AssertRequestCreateView(CreateView):
    form_class = AssertRequestForm
    # ...

    def get_initial(self):
        initial = super(AssertRequestCreateView, self).get_initial()
        if self.customer:
            initial['customer'] = self.customer
        return initial

    def dispatch(self, *args, **kwargs):
        self.customer = get_current_customer(self.request)
        return super(AssertRequestCreateView, self).dispatch(*args, **kwargs)

    def get_form(self, form_class):
        form = form_class(**self.get_form_kwargs())
        if self.customer:
            # make a field readonly 
            form.fields['customer'].widget.attrs['disabled'] = True
            # limot choices to one value
            form.fields['customer'].choices = [(self.customer.id, self.customer),]
        return form

from django import forms

from customer.models import Customer

class AssertRequestForm(forms.ModelForm):
    customer = forms.ModelChoiceField(
        label=u'Cliente',
        queryset=Customer.objects.all(),
        required=False,
    )
    
    # ...