id	summary	reporter	owner	description	type	status	component	version	severity	resolution	keywords	cc	stage	has_patch	needs_docs	needs_tests	needs_better_patch	easy	ui_ux
6457	Tutorial sample code: change max_length to maxlength	musner@…	nobody	"While working through the tutorial, I reached the section where you modify the polls/models.py file.
I got a max_length error (running development code (rev 7028)):

{{{
>python manage.py sql polls

mysite.polls: __init__() got an unexpected keyword argument 'max_length'
1 error found.
Traceback (most recent call last):
  File ""manage.py"", line 11, in <module>
    execute_manager(settings)
  File ""c:\Python25\lib\site-packages\django\core\management.py"", line 1672, in
execute_manager
    execute_from_command_line(action_mapping, argv)
  File ""c:\Python25\lib\site-packages\django\core\management.py"", line 1620, in
execute_from_command_line
    mod_list = [models.get_app(app_label) for app_label in args[1:]]
  File ""c:\Python25\lib\site-packages\django\db\models\loading.py"", line 40, in
get_app
    mod = load_app(app_name)
  File ""c:\Python25\lib\site-packages\django\db\models\loading.py"", line 51, in
load_app
    mod = __import__(app_name, {}, {}, ['models'])
  File ""C:\Documents and Settings\usner\Desktop\django\mysite\..\mysite\polls\mo
dels.py"", line 3, in <module>
    class Poll(models.Model):
  File ""C:\Documents and Settings\usner\Desktop\django\mysite\..\mysite\polls\mo
dels.py"", line 4, in Poll
    question = models.CharField(max_length=200)
TypeError: __init__() got an unexpected keyword argument 'max_length'
}}}

After removing 'max_length=' from the code to see what happened, I received the following error:
{{{
>python manage.py sql polls

polls.poll: ""question"": CharFields require a ""maxlength"" attribute.
polls.choice: ""choice"": CharFields require a ""maxlength"" attribute.
2 errors found.
}}}
The tutorial still has the underscore in max_length in the sample code.
After removing it, it worked.

'''Solution:'''
Make the following change to the sample code ('''max_length -> maxlength'''):
{{{
from django.db import models

class Poll(models.Model):
    question = models.CharField(maxlength=200)
    pub_date = models.DateTimeField('date published')

class Choice(models.Model):
    poll = models.ForeignKey(Poll)
    choice = models.CharField(maxlength=200)
    votes = models.IntegerField()
}}}

Thanks,
Mike

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