And also:
1)
You have misspelled description in the shorten_words method. In you model
field definition, and in your length check it's "description" but in the
print/return statements it's spelled "desciption".
2)
The python slicing operator is clever enough to handle indexes that are out
of bounds without errors, so self.description[0:20] would do nothing if
len(self.description)<=20. Your method could simply be written as
def shorten_words(self):
return self.description[0:20]
3)
You seem to be truncating by character count instead of word count, have
you tried using the built in template tag truncatechars?
https://docs.djangoproject.com/en/dev/ref/templates/builtins/#truncatechars
Den lördagen den 12:e april 2014 kl. 16:29:26 UTC+2 skrev Sanjay Bhangar:
>
> On Sat, Apr 12, 2014 at 7:50 PM, Camilo Torres
> <camilo...@gmail.com<javascript:>>
> wrote:
> > On Saturday, April 12, 2014 1:10:34 AM UTC-4:30, Kimitaka wrote:
> >>
> >> I wrote the function in my Product class in my models.py:
> >> class Product(models.Model):
> >> title = models.CharField(max_length=220)
> >> description = models.CharField(max_length=3000, null=True, blank=True)
> >> price = models.DecimalField(max_digits=1000, decimal_places=2,
> null=True,
> >> blank=True)
> >> slug = models.SlugField()
> >> timestamp = models.DateTimeField(auto_now_add=True, auto_now=False)
> >> updated = models.DateTimeField(auto_now_add=True, auto_now=False)
> >> active = models.BooleanField(default=True)
> >>
> >> def __unicode__(self):
> >> return self.title
> >> class Meta:
> >> ordering = ['title',]
> >>
> >> def shorten_words(self):
> >> if len(self.description) > 20:
> >> print self.desciption[0:20]
> >> else:
> >> print self.desciption
> >>
> >>
> >> and I added a code in my products.html page:
> >> {{ product.description.shorten_words() }}
> >
> > Hello,
> >
> > Should it be?:
> > {{ product.shorten_words }}
> >
>
> This. And in the desciption() method, you want to do "return
> self.description[0:20] and not print..." - print will just print the
> output in the console at that point - you need to "return" the value
> from the method.
>
> So:
>
> def shorten_words(self):
> if len(self.description) > 20:
> return self.desciption[0:20]
> else:
> return self.desciption
>
> That, and {{ product.shorten_words }} in your template should do the
> trick.
>
> All the best,
> Sanjay
>
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