Python/Django: Creating a simpler list from values_list()

Question

Consider:

>>>jr.operators.values_list('id') [(1,), (2,), (3,)] 

How does one simplify further to:

['1', '2', '3'] 

The purpose:

class ActivityForm(forms.ModelForm):     def __init__(self, *args, **kwargs):         super(ActivityForm, self).__init__(*args, **kwargs)         if self.initial['job_record']:             jr = JobRecord.objects.get(pk=self.initial['job_record'])              # Operators             self.fields['operators'].queryset = jr.operators              # select all operators by default             self.initial['operators'] = jr.operators.values_list('id') # refined as above. 

Answer 1

Use the flat=True construct of the django queryset: https://docs.djangoproject.com/en/dev/ref/models/querysets/#django.db.models.query.QuerySet.values_list

From the example in the docs:

>>> Entry.objects.values_list('id', flat=True).order_by('id') [1, 2, 3, ...] 

Answer 2

You need to do ..to get this output ['1', '2', '3']

map(str, Entry.objects.values_list('id', flat=True).order_by('id'))