I am working on creating a form but stuck at this issue.
I have several businesses in the Business Model. Each Business has its own Service in Services Model. The User is tied to only one Business. Both Business, Service have a relationship.
My Challenge
I have a Service Request Form. When I present this Service Request Model Form, I want to show only services for One Business, that the customer/user belongs to. Please help me how this is possible. I thought it would be like "Instance = Business". I understood its not that simple.
For example: Business1 has "Cars" and "Motor Bikes" as Services and Business2 has "nails" and "Hair Spa" as services. If a user from Business1 logged in and opened Service Request Form, She/He should see only "Cars" and "Motor Bikes" in service selection drop down.
'''
# class Service(models.Model):
class Business(models.Model):
name = models.CharField(max_length=25)
description = models.CharField(max_length=100)
active = models.BooleanField(default=True)
class BusinessUser(models.Model):
user = models.ForeignKey(User, on_delete=models.CASCADE)
business = models.ForeignKey(Business, on_delete=models.CASCADE, related_name='business')
class Services(models.Model):
business = models.ForeignKey(Business, on_delete=models.CASCADE, related_name='business_services')
name = models.CharField(max_length=15)
active = models.BooleanField(default=True)
class ServiceRequest(models.Model):
business = models.ForeignKey(Business, on_delete=models.DO_NOTHING)
service = models.ForeignKey(Service, on_delete=models.DO_NOTHING, blank=True)
requester_name = models.CharField(max_length=15)
class ServiceRequestForm(forms.ModelForm):
class Meta:
model = ServiceRequest
fields = '__all__'
def newServiceRequest(request): //the view
if request.method == 'GET':
user = request.user
business = user.business
serviceRequestForm = ServiceRequestForm(instance=business)
return render(request,'service.html', {'form':serviceRequestForm})
'''
CodePudding user response:
One way is to use django-select2
. See installation instructions here
Then in your form you can do:
class ServiceRequestForm(forms.ModelForm):
class Meta:
model = ServiceRequest
fields = '__all__'
widgets = {
'business': ModelSelect2Widget(
model=Business,
attrs={'class': 'form-control', 'data-minimum-input-length': 0},
search_fields=['name__icontains'],
),
'service': ModelSelect2Widget(
model=Services,
attrs={'class': 'form-control', 'data-minimum-input-length': 0},
search_fields=['name__icontains'],
dependent_fields={'business': 'business'},
),
}
The key element is the dependent_fields
option. Read more about it here
CodePudding user response:
You can pass the current business and update your queryset
in the ModelForm
constructor.
class ServiceRequestForm(forms.ModelForm):
def __init__(self, business, *args, **kw):
super(ServiceRequestForm, self).__init__(*args, **kw)
self.fields['business'].queryset = \
self.fields['business'].queryset.filter(pk=business.pk)
class Meta:
model = ServiceRequest
fields = '__all__'
def newServiceRequest(request): # the view
user = request.user
business = user.business
if request.method == 'POST':
serviceRequestForm = ServiceRequestForm(business, data=request.POST)
if (serviceRequestForm.is_valid()):
serviceRequest = serviceRequestForm.save()
# another stuff...
# ...
else:
serviceRequestForm = ServiceRequestForm(business)
return render(request,'service.html', {'form':serviceRequestForm})