Charfield variable length

['Odile Lambert' via Django users]

Hello I have problems with the Charfield max_length. In the source code, the possibility exists to have max_length = None but it does not pass Django check when  models.py. contains a charfield = None I can understand that there is a need for such a max_length form the database point of view . My need is the following: I have a set of  fields whose content in the database is a binary code of maximum 180 bits. Most of the time it will be much shorter and there is  in the form a field (max size) giving this maximum size. The user needs to input this field in the database as a Character string of 0 and 1. using hexadecimal fields would be very unpractical. Last but not least, I am using the admin to enter these data in the database. In a first shot, I used a Charfield and I overwrote the field in the init to set the maximum length to the value chosen by the user. I also modifed the attributes of the widget. But at the end the HTML contains a texinput with the max length set in the model.  Is this an admin feature or did I miss something? . Any other suggestion on how to handle these fields would be welcomed. -- You received this message because you are subscribed to the Google Groups "Django users" group. To unsubscribe from this group and stop receiving emails from it, send an email to django-users+unsubscr...@googlegroups.com. To post to this group, send email to django-users@googlegroups.com. Visit this group at https://groups.google.com/group/django-users. To view this discussion on the web visit https://groups.google.com/d/msgid/django-users/23ff10f1-41d5-8da1-18a4-07d457be8756%40laposte.net. For more options, visit https://groups.google.com/d/optout.