def passes_test(self, value):
answer_class = Answer.get_class(self.listing_question.answer_type)
method = getattr(answer_class, self.validation_test, None)
if method is None:
raise ValueError(
'unsupported validator defined on listing question')
return method(value, *self.test_params)
def passes_test(self, value):
answer_class = Answer.get_class(self.listing_question.answer_type)
method = getattr(answer_class, self.validation_test, None)
if method not in answer_class.validators():
raise ValueError(
'unsupported validator defined on listing question')
return method(value, *self.test_params)
def get_display_label(self):
survey = self.survey
naming_label = survey.random_sample_label
interview = self.interview
# get the exact answer type
pattern = '{{ *([0-9a-zA-Z_]+) *}}'
identifiers = re.findall(pattern, naming_label)
listing_form = survey.preferred_listing.listing_form if survey.preferred_listing else survey.listing_form
questions = listing_form.questions.filter(identifier__in=identifiers)
context = {}
for question in questions:
answer_class = Answer.get_class(question.answer_type)
try:
answer = answer_class.objects.get(interview=interview, question=question)
context[question.identifier] = answer.value
except answer_class.DoesNotExist:
pass
question_context = template.Context(context)
label = template.Template(html.escape(naming_label)).render(question_context)
# now if label happens to be empty, just use the first response as label
if not label:
try:
label = interview.answer.first().as_text
except:
pass
return label or interview.question_set.name
def reply(self, question):
if self.belongs_to(question.group):
answer_class = Answer.get_class(question.answer_type)
answers = answer_class.objects.filter(interview__householdmember=self, question=question)
if answers.exists():
reply = unicode(answers[0].to_text())
return string.capwords(reply)
return ''
def reply(self, question):
if self.belongs_to(question.group):
answer_class = Answer.get_class(question.answer_type)
answers = answer_class.objects.filter(
interview__householdmember=self, question=question)
if answers.exists():
reply = unicode(answers[0].to_text())
return string.capwords(reply)
return ''
def delete(self, using=None):
'''
Delete related answers before deleting this object
:param using:
:return:
'''
answer_class = Answer.get_class(self.answer_type)
answer_class.objects.filter(question=self).delete()
return super(Question, self).delete(using=using)
def delete(self, using=None):
'''
Delete related answers before deleting this object
:param using:
:return:
'''
answer_class = Answer.get_class(self.answer_type)
answer_class.objects.filter(question=self).delete()
return super(Question, self).delete(using=using)
def next_question(self, reply):
flows = self.flows.all()
answer_class = Answer.get_class(self.answer_type)
resulting_flow = None
for flow in flows:
if flow.validation_test:
test_values = [arg.param for arg in flow.text_arguments]
if getattr(answer_class, flow.validation_test)(reply, *test_values) == True:
resulting_flow = flow
break
else:
resulting_flow = flow
if resulting_flow:
return resulting_flow.next_question
def next_question(self, reply):
flows = self.flows.all()
answer_class = Answer.get_class(self.answer_type)
resulting_flow = None
for flow in flows:
if flow.validation_test:
test_values = [arg.param for arg in flow.text_arguments]
if getattr(answer_class,
flow.validation_test)(reply, *test_values) == True:
resulting_flow = flow
break
else:
resulting_flow = flow
if resulting_flow:
return resulting_flow.next_question
def next_question(self, reply):
flows = self.flows.all()
answer_class = Answer.get_class(self.answer_type)
resulting_flow = None
for flow in flows:
if flow.validation_test:
test_values = [arg.param for arg in flow.text_arguments]
if getattr(answer_class, flow.validation_test)(reply, *test_values) is True:
resulting_flow = flow
break
else:
resulting_flow = flow
if resulting_flow and resulting_flow.next_question:
# better for it to know who it is
return Question.get(id=resulting_flow.next_question.id)
def generate_random_samples(cls, from_survey, to_survey, ea):
""" Used to generate random samples from listing conducted by from_survey to be used by to_survey
to do: optimize this method queries
:param from_survey: Survey from which listing was done
:param to_survey: Survey for whom the random sample is being generated.
:param ea: the EA where the survey was conducted
:return: None
"""
if cls.samples(to_survey, ea).exists():
raise cls.SamplesAlreadyGenerated('Samples already generated')
if to_survey.has_sampling is False or from_survey.has_sampling is False:
raise ValueError('Either source or destination survey does not support sampling')
valid_interviews = from_survey.interviews.filter(ea=ea, # the listed interviews in the ea
question_set=from_survey.listing_form).values_list('id',
flat=True)
#valid_interviews = set(valid_interviews)
# now get the interviews that meet the randomization criteria
for criterion in to_survey.randomization_criteria.all(
): # need to optimize this
answer_type = criterion.listing_question.answer_type
if answer_type == MultiChoiceAnswer.choice_name():
value_key = 'value__text'
else:
value_key = 'value'
answer_class = Answer.get_class(answer_type)
kwargs = {
'question': criterion.listing_question,
'interview__id__in': valid_interviews,
}
# if qs:
# kwargs['interview__id__in'] = valid_interviews
valid_interviews = criterion.qs_passes_test(value_key, answer_class.objects.filter(
**kwargs). only('interview__id').values_list('interview__id', flat=True))
valid_interviews = list(valid_interviews)
random.shuffle(valid_interviews)
random_samples = valid_interviews[:to_survey.sample_size]
samples = []
for interview_id in random_samples:
samples.append(
ListingSample(
survey=to_survey,
interview_id=interview_id))
with transaction.atomic():
ListingSample.objects.bulk_create(samples)
def next_question(self, reply):
flows = self.flows.all()
answer_class = Answer.get_class(self.answer_type)
resulting_flow = None
for flow in flows:
if flow.validation_test:
test_values = [arg.param for arg in flow.text_arguments]
if getattr(
answer_class,
flow.validation_test)(
reply,
*test_values) is True:
resulting_flow = flow
break
else:
resulting_flow = flow
if resulting_flow and resulting_flow.next_question:
# better for it to know who it is
return Question.get(id=resulting_flow.next_question.id)
def _get_possible_samples():
if to_survey.has_sampling is False or from_survey.has_sampling is False:
raise ValueError(
'Either source or destination survey does not support sampling'
)
valid_interviews = from_survey.interviews.filter(
ea=ea, # the listed interviews in the ea
question_set=from_survey.listing_form).values_list('id',
flat=True)
#valid_interviews = set(valid_interviews)
# now get the interviews that meet the randomization criteria
for criterion in to_survey.randomization_criteria.all(
): # need to optimize this
answer_type = criterion.listing_question.answer_type
if answer_type == MultiChoiceAnswer.choice_name():
value_key = 'value__text'
else:
value_key = 'value'
answer_class = Answer.get_class(answer_type)
kwargs = {
'question': criterion.listing_question,
'interview__id__in': valid_interviews,
}
# if qs:
# kwargs['interview__id__in'] = valid_interviews
valid_interviews = criterion.qs_passes_test(
value_key,
answer_class.objects.filter(
**kwargs).only('interview__id').values_list(
'interview__id', flat=True))
valid_interviews = list(valid_interviews)
random.shuffle(valid_interviews)
random_samples = valid_interviews[:to_survey.sample_size]
samples = []
for interview_id in random_samples:
samples.append(
ListingSample(survey=to_survey, interview_id=interview_id))
return samples
def total_answers(self):
return Answer.get_class(
self.answer_type).objects.filter(
question=self).count()
def validator_names(self):
return [v.__name__ for v in Answer.get_class(self.answer_type).validators()]
def qs_passes_test(self, value_key, queryset):
answer_class = Answer.get_class(self.listing_question.answer_type)
method = getattr(answer_class, 'fetch_%s' % self.validation_test, None)
return method(value_key, *self.test_params, qs=queryset)
def get_odk_constraint(self, test_question):
answer_class = Answer.get_class(test_question.answer_type)
return mark_safe(answer_class.print_odk_validation('.', self.validation_test, *self.test_params))
def validators(self):
return Answer.get_class(self.answer_type).validators()
def answers(self):
return Answer.get_class(self.answer_type).objects.filter(question=self)
def total_answers(
self
): #just utility to get number of times this question has been answered
return Answer.get_class(
self.answer_type).objects.filter(question=self).count()
def validate(self, value, test_question):
answer_class = Answer.get_class(test_question.answer_type)
method = getattr(answer_class, self.validation_test, None)
return method(value, *self.test_params)
def prepped_args(self):
answer_class = Answer.get_class(self.test_question.answer_type)
return [answer_class.prep_value(val) for val in self.test_params]
def answers(self):
return Answer.get_class(self.answer_type).objects.filter(question=self)
def qs_passes_test(self, value_key, queryset):
answer_class = Answer.get_class(self.listing_question.answer_type)
method = getattr(answer_class, 'fetch_%s' % self.validation_test, None)
return method(value_key, *self.test_params, qs=queryset)
def total_answers(self):
return Answer.get_class(
self.answer_type).objects.filter(
question=self).count()