context not rendering in django App - django

Question

I am driving to render a context scale that is not rendering in my HTML and I can manage to see the error. I do not get any error in the inspect/console and neither in the Atom terminal.
I am developing a survey app using a scale from 0-100% (using JavaScript)
but for some reason it is not rendering;
here is my code:
views.py
class SurveyDetail(View):
def get(self, request, *args, **kwargs):
survey = get_object_or_404(Survey, is_published=True, id=kwargs['id'])
if survey.template is not None and len(survey.template) > 4:
template_name = survey.template
else:
if survey.display_by_question:
template_name = 'survey/survey.html'
else:
template_name = 'survey/one_page_survey.html'
if survey.need_logged_user and not request.user.is_authenticated():
return redirect('%s?next=%s' % (settings.LOGIN_URL, request.path))
categories = Category.objects.filter(survey=survey).order_by('order')
form = ResponseForm(survey=survey, user=request.user,
step=kwargs.get('step', 0))
#try:
get_scale = form.get_multiple_scale()
#except:
# get_scale = None
context = {
'response_form': form,
'survey': survey,
'categories': categories,
'scales': get_scale
}
return render(request, template_name, context)
form.py:
class ResponseForm(models.ModelForm):
WIDGETS = {
Question.TEXT: forms.Textarea,
Question.SHORT_TEXT: forms.TextInput,
Question.RADIO: forms.RadioSelect,
Question.SELECT: forms.Select,
Question.SELECT_IMAGE: ImageSelectWidget,
Question.SELECT_MULTIPLE: forms.CheckboxSelectMultiple,
Question.SCALE: forms.TextInput,
}
class Meta(object):
model = Response
fields = ()
def __init__(self, *args, **kwargs):
""" Expects a survey object to be passed in initially """
self.survey = kwargs.pop('survey')
self.user = kwargs.pop('user')
try:
self.step = int(kwargs.pop('step'))
except KeyError:
self.step = None
super(ResponseForm, self).__init__(*args, **kwargs)
self.uuid = uuid.uuid4().hex
self.steps_count = len(self.survey.questions.all())
# add a field for each survey question, corresponding to the question
# type as appropriate.
data = kwargs.get('data')
for i, question in enumerate(self.survey.questions.all()):
is_current_step = i != self.step and self.step is not None
if self.survey.display_by_question and is_current_step:
continue
else:
try:
self.scales = question.get_multiple_scales()
except:
self.scales = None
self.add_question(question, data)
def get_multiple_scale(self):
mscale = []
for items in self.scales:
index, question = items
tag = "<p class='tagged'>{}</p>".format(question)
mscale.append(tag)
return mscale
HTML:
{% load bootstrap %}
{% load static %}
{% load i18n %}
{% load survey_extras %}
<table class="table">
<!--<thead>
<tr>
<th> Question </th>
<th> Answers </th>
</tr>
</thead> -->
<tbody>
{% for form in response_form %}
{% if form.field.widget.attrs.category == category.name or not form.field.widget.attrs.category %}
<tr class="{% if form.errors%} danger {% endif %}">
<td>
<div class="question-title">
<h4>{{ form.label|safe }}</h4>
</div>
{% if form.field.required %}
<span class="glyphicon glyphicon-asterisk" style="color:red"> </span>
{% endif %}
<span class="help-inline" style="color:red">
<strong> {% for error in form.errors %}{{ error }}{% endfor %} </strong>
</span> <br>
<div class="answers">
{% for field in form %}
<ul>
{{ field }}
</ul>
{% endfor%}
{% if "hidden" in form.field.widget.attrs %}
<br>
{% for scale in scales %}
{{ scale|safe }}
<div id="rate" class="scale">
</div>
<div class="scale-title">
<div class="container">
<div class="row">
<div class="col scaleleft">
0%
</div>
<div class="col scaleright">
100%
</div>
</div>
</div>
</div>
<br>
{% endfor %}
{% endif %}
</div>
</td>
</tr>
{% endif %}
{% endfor %}
</tbody>
</table>

Answer 1

You've got a catch-all except clause in the get method. That is a very very very bad idea; you are catching and hiding any error that happens in the get_multiple_scale method. Probably, something is going wrong there, but your code makes it impossible to tell what.
Remove that try/except.
You have a similar one in your form's init method; there it makes even less sense, as you end up assigning None to self.scales which is the very thing that you're iterating over in get_multiple_scales. There is a very odd circular definition here, which you certainly shouldn't have.