Automatically wordwrap django model string fields

django_model_wordwrap.py

import textwrap as mod_textwrap

import django.db.models.fields as mod_fields

def wordwrap_fields(model):
    """
    When models are not created through forms (so standard form validation didn't prevent 
    too long strings), this can be used to automatically wordwrap.
    """
    for field in model._meta.fields:
        name = field.name
        if field.__class__ == mod_fields.CharField:
            max_length = field.max_length
            value = getattr(model, name)
            if value:
                value = mod_textwrap.wrap(value, max_length)[0]
            setattr(model, name, value)