I have been reading tango_with_django tutorial, and when I managed to get to part 7, I was stucked. When I added this code from django.template.defaultfilters import slugify class Category(models.Model): name = models.CharField(max_length=128, unique=True) views = models.IntegerField(default=0) likes = models.IntegerField(default=0) slug = models.SlugField(unique=True) def save(self, *args, **kwargs): self.slug = slugify(self.name) super(Category, self).save(*args, **kwargs) def __unicode__(self): return self.name I've got this Traceback (most recent call last): File "manage.py", line 10, in <module> execute_from_command_line(sys.argv) File "C:\Python34\lib\site-packages\django\core\management\__init__.py", line 385, in execute_from_command_line utility.execute() File "C:\Python34\lib\site-packages\django\core\management\__init__.py", line 377, in execute self.fetch_command(subcommand).run_from_argv(self.argv) File "C:\Python34\lib\site-packages\django\core\management\base.py", line 288, in run_from_argv self.execute(*args, **options.__dict__) File "C:\Python34\lib\site-packages\django\core\management\base.py", line 338, in execute output = self.handle(*args, **options) File "C:\Python34\lib\site-packages\django\core\management\commands\migrate.py ", line 161, in handle executor.migrate(targets, plan, fake=options.get("fake", False)) File "C:\Python34\lib\site-packages\django\db\migrations\executor.py", line 68 , in migrate self.apply_migration(migration, fake=fake) File "C:\Python34\lib\site-packages\django\db\migrations\executor.py", line 10 2, in apply_migration migration.apply(project_state, schema_editor) File "C:\Python34\lib\site-packages\django\db\migrations\migration.py", line 1 08, in apply operation.database_forwards(self.app_label, schema_editor, project_state, ne w_state) File "C:\Python34\lib\site-packages\django\db\migrations\operations\fields.py" , line 37, in database_forwards field, File "C:\Python34\lib\site-packages\django\db\backends\sqlite3\schema.py", lin e 176, in add_field self._remake_table(model, create_fields=[field]) File "C:\Python34\lib\site-packages\django\db\backends\sqlite3\schema.py", lin e 144, in _remake_table self.quote_name(model._meta.db_table), File "C:\Python34\lib\site-packages\django\db\backends\schema.py", line 102, i n execute cursor.execute(sql, params) File "C:\Python34\lib\site-packages\django\db\backends\utils.py", line 81, in execute return super(CursorDebugWrapper, self).execute(sql, params) File "C:\Python34\lib\site-packages\django\db\backends\utils.py", line 65, in execute return self.cursor.execute(sql, params) File "C:\Python34\lib\site-packages\django\db\utils.py", line 94, in __exit__ six.reraise(dj_exc_type, dj_exc_value, traceback) File "C:\Python34\lib\site-packages\django\utils\six.py", line 658, in reraise raise value.with_traceback(tb) File "C:\Python34\lib\site-packages\django\db\backends\utils.py", line 65, in execute return self.cursor.execute(sql, params) File "C:\Python34\lib\site-packages\django\db\backends\sqlite3\base.py", line 485, in execute return Database.Cursor.execute(self, query, params) django.db.utils.IntegrityError: UNIQUE constraint failed: rango_category__new.sl ug After I removed this code, I still get same error message while trying to do python manage.py migrate After I deleted database with python manage.py flush And entered python manage.py migrate I also got the same error. What's going on? Continue reading...
