On Sat, May 17, 2008 at 5:46 PM, Brian <[EMAIL PROTECTED]> wrote:
>
> I've searched for this, but people think it is either fixed or very
> hard to reproduce. In my case it is 100% reproducible, and I wonder if
> it is my own fault.
>
> I have a model for a mp3 set (a set of mp3s). Individual mp3's are
> associated with the set via a Foreign key.
>
> I recently added a slug field to the mp3 after the fact, and I think I
> have manually added it to the MySQL database to match what Django
> thinks should be there. Now, when I try to edit a mp3 set in the admin
> page and hit save, I always get:
>
> TypeError at /django/admin/band/mp3_set/3/
> Cannot resolve keyword 'slug' into field. Choices are: mp3, id, date,
> title, text
>
> Here are the models:
>
> class Mp3_Set(models.Model):
> date = models.DateField(auto_now_add = True, editable = False)
> title = models.CharField(max_length = 64)
> text = models.TextField()
>
> def __unicode__(self):
> return self.title
>
> class Admin:
> list_filter = ('date', )
> list_display = ('title', 'date')
>
> class Meta:
> ordering = ('date', )
> verbose_name = "MP3 Set"
>
> class Mp3(models.Model):
> mp3_set = models.ForeignKey(Mp3_Set, edit_inline = models.TABULAR,
> num_in_admin = 5, num_extra_on_change = 5)
> title = models.CharField(max_length = 64, core = True)
> desc = models.CharField(max_length = 128, blank = True)
> file = models.FileField(upload_to = 'mp3s/%Y/%m/%d/')
> slug = models.SlugField(unique = True, prepopulate_from = ('title',
> 'desc'))
>
> def __unicode__(self):
> return self.title
>
> class Admin:
> pass
>
> class Meta:
> ordering = ('title', )
> verbose_name = "MP3"
>
> And here is the export SQL for the two tables:
>
> CREATE TABLE `band_mp3_set` (
> `id` int(11) NOT NULL auto_increment,
> `date` date NOT NULL,
> `title` varchar(64) collate latin1_general_ci NOT NULL,
> `text` longtext collate latin1_general_ci NOT NULL,
> PRIMARY KEY (`id`)
> ) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_general_ci
> AUTO_INCREMENT=4 ;
>
> CREATE TABLE `band_mp3` (
> `id` int(11) NOT NULL auto_increment,
> `mp3_set_id` int(11) NOT NULL,
> `title` varchar(64) collate latin1_general_ci NOT NULL,
> `desc` varchar(128) collate latin1_general_ci NOT NULL,
> `file` varchar(100) collate latin1_general_ci NOT NULL,
> `slug` varchar(50) collate latin1_general_ci NOT NULL,
> PRIMARY KEY (`id`),
> UNIQUE KEY `band_mp3_slug` (`slug`),
> KEY `band_mp3_mp3_set_id` (`mp3_set_id`)
> ) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_general_ci
> AUTO_INCREMENT=11 ;
>
>
> Here is a trace back:
> Traceback:
> File "C:\Python25\Lib\site-packages\django\core\handlers\base.py" in
> get_response
> 82. response = callback(request, *callback_args,
> **callback_kwargs)
> File "C:\Python25\Lib\site-packages\django\contrib\admin\views
> \decorators.py" in _checklogin
> 62. return view_func(request, *args, **kwargs)
> File "C:\Python25\Lib\site-packages\django\views\decorators\cache.py"
> in _wrapped_view_func
> 44. response = view_func(request, *args, **kwargs)
> File "C:\Python25\Lib\site-packages\django\contrib\admin\views
> \main.py" in change_stage
> 334. errors = manipulator.get_validation_errors(new_data)
> File "C:\Python25\Lib\site-packages\django\oldforms\__init__.py" in
> get_validation_errors
> 62. errors.update(field.get_validation_errors(new_data))
> File "C:\Python25\Lib\site-packages\django\oldforms\__init__.py" in
> get_validation_errors
> 379. self.run_validator(new_data, validator)
> File "C:\Python25\Lib\site-packages\django\oldforms\__init__.py" in
> run_validator
> 369. validator(new_data.get(self.field_name, ''),
> new_data)
> File "C:\Python25\Lib\site-packages\django\utils\functional.py" in
> _curried
> 55. return _curried_func(*(args+moreargs), **dict(kwargs,
> **morekwargs))
> File "C:\Python25\Lib\site-packages\django\db\models\fields
> \__init__.py" in manipulator_validator_unique
> 47. old_obj = self.manager.get(**{lookup_type: field_data})
> File "C:\Python25\Lib\site-packages\django\db\models\manager.py" in
> get
> 69. return self.get_query_set().get(*args, **kwargs)
> File "C:\Python25\Lib\site-packages\django\db\models\query.py" in get
> 261. obj_list = list(clone)
> File "C:\Python25\Lib\site-packages\django\db\models\query.py" in
> __iter__
> 114. return iter(self._get_data())
> File "C:\Python25\Lib\site-packages\django\db\models\query.py" in
> _get_data
> 486. self._result_cache = list(self.iterator())
> File "C:\Python25\Lib\site-packages\django\db\models\query.py" in
> iterator
> 180. select, sql, params = self._get_sql_clause()
> File "C:\Python25\Lib\site-packages\django\db\models\query.py" in
> _get_sql_clause
> 501. joins2, where2, params2 = self._filters.get_sql(opts)
> File "C:\Python25\Lib\site-packages\django\db\models\query.py" in
> get_sql
> 723. joins2, where2, params2 = val.get_sql(opts)
> File "C:\Python25\Lib\site-packages\django\db\models\query.py" in
> get_sql
> 774. return parse_lookup(self.kwargs.items(), opts)
> File "C:\Python25\Lib\site-packages\django\db\models\query.py" in
> parse_lookup
> 929. joins2, where2, params2 = lookup_inner(path,
> lookup_type, value, opts, opts.db_table, None)
> File "C:\Python25\Lib\site-packages\django\db\models\query.py" in
> lookup_inner
> 1047. raise TypeError, "Cannot resolve keyword '%s' into
> field. Choices are: %s" % (name, ", ".join(choices))
>
> Exception Type: TypeError at /django/admin/band/mp3_set/3/
> Exception Value: Cannot resolve keyword 'slug' into field. Choices
> are: mp3, id, date, title, text
>
>
> Thanks for any hints.
>
Based on the choices the error message lists, it appears you have added code
that tries to access the slug field in an Mp3_Set model instance. However,
you have added the slug field to the other model, Mp3.
Karen
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