Quantization error in BMI calculator

[rolandgeider]

Traceback (most recent call last):

  File "/home/rge/www/python-django/lib/python2.7/site-packages/django/core/handlers/base.py", line 112, in get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)

  File "/home/rge/www/wger-patched/wger/nutrition/views/bmi.py", line 59, in calculate
    request.user.userprofile.user_bodyweight(form.cleaned_data['weight'])

  File "/home/rge/www/wger-patched/wger/core/models.py", line 384, in user_bodyweight
    entry.save()

  File "/home/rge/www/python-django/lib/python2.7/site-packages/django/db/models/base.py", line 545, in save
    force_update=force_update, update_fields=update_fields)

  File "/home/rge/www/python-django/lib/python2.7/site-packages/django/db/models/base.py", line 573, in save_base
    updated = self._save_table(raw, cls, force_insert, force_update, using, update_fields)

  File "/home/rge/www/python-django/lib/python2.7/site-packages/django/db/models/base.py", line 635, in _save_table
    forced_update)

  File "/home/rge/www/python-django/lib/python2.7/site-packages/django/db/models/base.py", line 679, in _do_update
    return filtered._update(values) > 0

  File "/home/rge/www/python-django/lib/python2.7/site-packages/django/db/models/query.py", line 510, in _update
    return query.get_compiler(self.db).execute_sql(None)

  File "/home/rge/www/python-django/lib/python2.7/site-packages/django/db/models/sql/compiler.py", line 980, in execute_sql
    cursor = super(SQLUpdateCompiler, self).execute_sql(result_type)

  File "/home/rge/www/python-django/lib/python2.7/site-packages/django/db/models/sql/compiler.py", line 776, in execute_sql
    sql, params = self.as_sql()

  File "/home/rge/www/python-django/lib/python2.7/site-packages/django/db/models/sql/compiler.py", line 945, in as_sql
    val = field.get_db_prep_save(val, connection=self.connection)

  File "/home/rge/www/python-django/lib/python2.7/site-packages/django/db/models/fields/__init__.py", line 972, in get_db_prep_save
    self.max_digits, self.decimal_places)

  File "/home/rge/www/python-django/lib/python2.7/site-packages/django/db/backends/__init__.py", line 1114, in value_to_db_decimal
    return util.format_number(value, max_digits, decimal_places)

  File "/home/rge/www/python-django/lib/python2.7/site-packages/django/db/backends/util.py", line 177, in format_number
    return "{0:f}".format(value.quantize(decimal.Decimal(".1") ** decimal_places, context=context))

  File "/package/host/localhost/python-2.7/lib/python2.7/decimal.py", line 2464, in quantize
    'quantize result has too many digits for current context')

  File "/package/host/localhost/python-2.7/lib/python2.7/decimal.py", line 3866, in _raise_error
    raise error(explanation)

InvalidOperation: quantize result has too many digits for current context