Request Method: POST
Request URL: http://127.0.0.1/topic/add/
Exception Type: TypeError
Exception Value: unsupported operand type(s) for +: 'NoneType' and
'int'
Exception Location: E:\Django Workspace\mybar\..\mybar\bar\views.py in
add_topic, line 71
Python Executable: E:\Python25\python.exe
Python Version: 2.5.1
in my views, the code is:
70 forum = Forum.objects.get(id=forum_id)
71 forum.topics = forum.topics+1 //
72 forum.save()
in my models ,the Forum is:
class Forum(models.Model):
name = models.CharField(maxlength = 32, verbose_name = "forum
name")
description = models.CharField(maxlength = 255)
topics = models.PositiveIntegerField(default = '0',
blank=True,null = True)
order = models.PositiveSmallIntegerField(default = '0', null =
True)
def __str__(self):
return self.name
who can help me, thanks
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