Joel Mathew
2018-11-27 18:23:54 UTC
Situation:
I have two Model classes, in two different apps which are part of the same
project. class doctor defined in appointments.models is a set of attributes
associated with a doctor, like name, username, email, phone etc. class
DoctorProfilePic is a Model defined in clinic.models, which has a
StdImageField which stores images. doctor has a One to One mapping to
DoctorProfilePic.
class doctor(models.Model):
docid = models.AutoField(primary_key=True, unique=True) # Need
autoincrement, unique and primary
name = models.CharField(max_length=35)
username = models.CharField(max_length=15)
...
profilepic = models.ForeignKey(DoctorProfilePic, blank=True,
null=True, on_delete=models.CASCADE)
...
class DoctorProfilePic (models.Model):
id = models.AutoField(primary_key=True, unique=True)
name = models.CharField(max_length=255, blank=True)
pic = StdImageField(upload_to="data/media/%Y/%m/%d", blank=True,
variations={
'large': (600, 400),
'thumbnail': (150, 140, True),
'medium': (300, 200),
})
doc = models.ForeignKey('appointments.doctor', blank=True,
null=True, on_delete=models.CASCADE)
Anticipated response:
When user selects one of the profile pics from a selection box, and clicks
Delete, django is supposed to delete the picture from the collection of
pictures uploaded by the doctor.
Problem:
When the delete button is clicked, django deletes both the picture and the
doctor, instead of just the former.
Code:
def removeprofpic(request, docid):
docid = int(docid)
if not IsOwnerorSuperUser(request, docid):
return HttpResponse("You dont have permissions to do this.")
doc = doctor.objects.get(docid = docid)
if request.method == 'POST':
print(request.POST)
picid = int(request.POST.get('profilepic'))
print(f'doc:{doc} picid:{picid}')
pic = DoctorProfilePic.objects.get(doc = doc, id =picid)
pic.delete()
msg = f"Successfully removed profile picture."
else:
msg = "Not a valid POST"
return HttpResponse(msg)
Now I'm guessing my problem is in defining the on_delete=models.CASCADE?
Can someone explain what I've done wrong?
Sincerely yours,
Joel G Mathew
I have two Model classes, in two different apps which are part of the same
project. class doctor defined in appointments.models is a set of attributes
associated with a doctor, like name, username, email, phone etc. class
DoctorProfilePic is a Model defined in clinic.models, which has a
StdImageField which stores images. doctor has a One to One mapping to
DoctorProfilePic.
class doctor(models.Model):
docid = models.AutoField(primary_key=True, unique=True) # Need
autoincrement, unique and primary
name = models.CharField(max_length=35)
username = models.CharField(max_length=15)
...
profilepic = models.ForeignKey(DoctorProfilePic, blank=True,
null=True, on_delete=models.CASCADE)
...
class DoctorProfilePic (models.Model):
id = models.AutoField(primary_key=True, unique=True)
name = models.CharField(max_length=255, blank=True)
pic = StdImageField(upload_to="data/media/%Y/%m/%d", blank=True,
variations={
'large': (600, 400),
'thumbnail': (150, 140, True),
'medium': (300, 200),
})
doc = models.ForeignKey('appointments.doctor', blank=True,
null=True, on_delete=models.CASCADE)
Anticipated response:
When user selects one of the profile pics from a selection box, and clicks
Delete, django is supposed to delete the picture from the collection of
pictures uploaded by the doctor.
Problem:
When the delete button is clicked, django deletes both the picture and the
doctor, instead of just the former.
Code:
def removeprofpic(request, docid):
docid = int(docid)
if not IsOwnerorSuperUser(request, docid):
return HttpResponse("You dont have permissions to do this.")
doc = doctor.objects.get(docid = docid)
if request.method == 'POST':
print(request.POST)
picid = int(request.POST.get('profilepic'))
print(f'doc:{doc} picid:{picid}')
pic = DoctorProfilePic.objects.get(doc = doc, id =picid)
pic.delete()
msg = f"Successfully removed profile picture."
else:
msg = "Not a valid POST"
return HttpResponse(msg)
Now I'm guessing my problem is in defining the on_delete=models.CASCADE?
Can someone explain what I've done wrong?
Sincerely yours,
Joel G Mathew
--
You received this message because you are subscribed to the Google Groups "Django users" group.
To unsubscribe from this group and stop receiving emails from it, send an email to django-users+***@googlegroups.com.
To post to this group, send email to django-***@googlegroups.com.
Visit this group at https://groups.google.com/group/django-users.
To view this discussion on the web visit https://groups.google.com/d/msgid/django-users/CAA%3Diw__vyDXxz6sfmcS_Bcy8M5cANmB7mwmTMwS4rfF96bJmbg%40mail.gmail.com.
For more options, visit https://groups.google.com/d/optout.
You received this message because you are subscribed to the Google Groups "Django users" group.
To unsubscribe from this group and stop receiving emails from it, send an email to django-users+***@googlegroups.com.
To post to this group, send email to django-***@googlegroups.com.
Visit this group at https://groups.google.com/group/django-users.
To view this discussion on the web visit https://groups.google.com/d/msgid/django-users/CAA%3Diw__vyDXxz6sfmcS_Bcy8M5cANmB7mwmTMwS4rfF96bJmbg%40mail.gmail.com.
For more options, visit https://groups.google.com/d/optout.