I try to log value of ModelMultipleChoiceField

logger.debug("names %s" % self.fields['names_list'])

But I got

  2016-08-09 17:00:19,027 DEBUG views names <django.forms.models.ModelMultipleChoiceField object at 0xa74d0bcc>

The expected result is sth like:

  2016-08-09 17:00:19,027 DEBUG views names [33,40,45]

update I'm not sure what is unclear - I suppose, that you want to see the model, but i think is useless - i don't need any value just pk of instances which are selected in ModelMultipleChoiceField

I need to debug because when I enter form i set some hidden fields:

<input id="id_names" name="names" type="hidden" value="[33]" />

and I'm trying to set it using additional field (using ModelMultipleChoiceField) - during clean I'm veryfing checkings and set values. But it looks like ModelMultipleChoiceField is empty in clean, so I want to debug if it's true.

(I have to rename field names into names_list because you may think that hidden field and multiplechoicefield have the same names)

You can convert the ModelMultipleChoiceField to a list of strings with

selected_names = [label for value, label in self.fields['names'].choices if value in self['names'].value()]
logger.debug("names %s" % selected_names)