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I am making a system for a company which among other things must hold information about the satisfactory level about various things, I have made it work fine using a fixed model with fixed questions and answers, but I am sure that they will need to change or add questions.
So I want to make a system where users can make custom evaluation schemas that consists of custom questions defined by them. How do I go about making such a design?
Right now my model is this, but wrong:
RATING_CHOICES = ((0, u"Good"), (1, u"Bad"), (2, u"Dunno"),)
class EvaluationScheme(models.Model):
title = models.CharField(max_length=200)
class Evaluation(models.Model):
doctor = models.CharField(max_length=200)
agency = models.CharField(max_length=200)
scheme = models.ForeignKey(EvaluationScheme)
class EvaluationQuestion(models.Model):
question = models.CharField(max_length=200)
evaluation = models.ForeignKey(EvaluationScheme)
def __unicode__(self):
return self.question
class EvaluationAnswer(models.Model):
evaluation = models.ForeignKey(Evaluation)
question = models.ForeignKey(EvaluationQuestion)
answer = models.SmallIntegerField(choices=RATING_CHOICES)
This is sort of what I want, except that the EvaluationScheme is useless, since you still have to chose all questions and answers yourself - it does not display a list of only the questions related to the schema of choice.
838
I think your models are fine. I used the Django admin to create an EvaluationScheme with EvaluationQuestions, then I created an Evaluation and I was able to answer its questions. Here's the code I used to go with your models:
# forms.py:
from django.forms.models import inlineformset_factory
import models
AnswerFormSet = inlineformset_factory(models.Evaluation,
models.EvaluationAnswer, exclude=('question',),
extra=0, can_delete=False)
# views.py
from django.http import HttpResponse
from django.shortcuts import render_to_response, get_object_or_404
import models, forms
def prepare_blank_answers(evaluation):
for question in evaluation.scheme.evaluationquestion_set.all():
answer = models.EvaluationAnswer(evaluation=evaluation,
question=question)
answer.save()
def answer_form(request, id):
evaluation = get_object_or_404(models.Evaluation, id=id)
if len(evaluation.evaluationanswer_set.all()) == 0:
prepare_blank_answers(evaluation)
if request.method == 'POST':
formset = forms.AnswerFormSet(request.POST, instance=evaluation)
if formset.is_valid():
formset.save()
return HttpResponse('Thank you!')
else:
formset = forms.AnswerFormSet(instance=evaluation)
return render_to_response('answer_form.html',
{'formset':formset, 'evaluation':evaluation})
# answer_form.html:
<html><head></head><body>
Doctor: {{ evaluation.doctor }} <br>
Agency: {{ evaluation.agency }}
<form method="POST">
{{ formset.management_form }}
<table>
{% for form in formset.forms %}
<tr><th colspan="2">{{ form.instance.question }}</th></tr>
{{ form }}
{% endfor %}
</table>
<input type="submit">
</form>
</body></html>
Have you checked django-survey? It's pretty neat.
24
Django-crowdsourcing is a fork of django-survey that is actively maintained as of 2012 and targets Django 1.2+.
22
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