I have a model with two fields as below
**models.py**
class Publisher(models.Model):
name = models.CharField(max_length=200)
slug = models.SlugField(max_length=150, unique=True)
def save(self, *args, **kwargs):
if not self.id and not self.slug:
slug = slugify(self.name)
try:
slug_exits = Publisher.objects.get(slug=slug)
if slug_exits:
self.slug = slug + '_1'
except Publisher.DoesNotExist:
self.slug = slug
super(Publisher, self).save(*args, **kwargs)
Here i am creating a slug based on the `name` field as we can see above
So when we try to create a publisher with `name already exists`, the `save`
method of the model will add the `_1` to the end.
And when we again try to create a new record with same `name`, an
`Integrity` error will be raised as below
>> Publisher.objects.create(name="abc")
result: slug will be "abc"
>> Publisher.objects.create(name="abc")
result: slug will be "abc_1"
>> Publisher.objects.create(name="abc")
result:
.................
.................
34 del cursor
35 del connection
---> 36 raise errorclass, errorvalue
37
38 re_numeric_part = re.compile(r"^(\d+)")
IntegrityError: (1062, "Duplicate entry 'abc_1' for key 'slug'")
So what i am want is if the title/slug already exists in the database and
if slug contains number in it(at the end like abc`_1`), we should increment
it that number
So what all i want is to `increment the number in the slug` as below if
the title/slug already exists in the database
abc
abc_1
abc_2
abc_3
So can anyone please let me know how to implement the above logic of
incrementing the slug ?
Thanks in advance......
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