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# System library imports.
import sys
from os.path import basename
# Django imports.
from django.core.management.base import BaseCommand
from django.template import Template, Context
# Local imports.
from exam.models import Quiz, QuestionPaper
result_template = Template('''\
"name","username","rollno","email","answered","total","attempts","position",\
"department","institute"
{% for paper in papers %}\
"{{ paper.user.get_full_name.title }}",\
"{{ paper.user.username }}",\
"{{ paper.profile.roll_number }}",\
"{{ paper.user.email }}",\
"{{ paper.get_answered_str }}",\
{{ paper.get_total_marks }},\
{{ paper.answers.count }},\
"{{ paper.profile.position }}",\
"{{ paper.profile.department }}",\
"{{ paper.profile.institute }}"
{% endfor %}\
''')
def results2csv(filename, stdout):
"""Write exam data to a CSV file. It prompts the user to choose the
appropriate quiz.
"""
qs = Quiz.objects.all()
if len(qs) > 1:
print "Select quiz to save:"
for q in qs:
stdout.write('%d. %s\n'%(q.id, q.description))
quiz_id = int(raw_input("Please select quiz: "))
try:
quiz = Quiz.objects.get(id=quiz_id)
except Quiz.DoesNotExist:
stdout.write("Sorry, quiz %d does not exist!\n"%quiz_id)
sys.exit(1)
else:
quiz = qs[0]
papers = QuestionPaper.objects.filter(quiz=quiz,
user__profile__isnull=False)
stdout.write("Saving results of %s to %s ... "%(quiz.description,
basename(filename)))
# Render the data and write it out.
f = open(filename, 'w')
context = Context({'papers': papers})
f.write(result_template.render(context))
f.close()
stdout.write('Done\n')
class Command(BaseCommand):
args = '<results.csv>'
help = '''Writes out the results of a quiz to a CSV file. Prompt user
to select appropriate quiz if there are multiple.
'''
def handle(self, *args, **options):
"""Handle the command."""
# Save to file.
results2csv(args[0], self.stdout)
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