django form processing and submit issues - django

Question

New to Django.I retrieve data from mysql db that are displayed into a form.User needs to choose among the form choices. The view processes data that have been posted from the form by querying the DB and should send the results in csv format or in graph.I am trying right now to create a csv file with the results of the query but submit does not work.
views.py:
def monitor(request):
if request.method == 'POST' :
forms = ServicesForm(request.POST)
if forms.is_valid():
service = forms.cleaned_data['service']
scale = forms.cleaned_data['scale']
datatype = forms.cleaned_data['datatype']
starttime = forms.cleaned_data['starttime']
endtime = forms.cleaned_data['endtime']
id = Servicenames.objects.raw('SELECT id FROM servicenames WHERE servicename = ' + service )
# process and create query Select "dtime",datatype where "scale" = scale and "dtime' between starttime and endtime
# and service_id
servicestats = Servicestats.objects.raw('SELECT distinct dtime,'+ datatype + ' FROM servicestats WHERE scale = '+ scale + ' AND dtime between '+ starttime + ' and '+ endtime + 'and service_id = '+ id.id)
response = HttpResponse(mimetype='text/csv')
response['Content-Disposition'] = 'attachment;filename="export.csv"'
writer = csv.writer(response)
for s in servicestats:
writer.writerow([s.dtime,s.datatype])
return response
else:
forms = ServicesForm
return render_to_response('monitor/monitor.html', {'forms':forms},
context_instance = RequestContext(request))
models.py :
class Servicenames(models.Model):
id = models.IntegerField(primary_key=True)
servicename = models.CharField(unique=True, max_length=255)
class Meta:
db_table = u'servicenames'
def __unicode__(self):
return self.servicename
class Servicestats(models.Model):
# service_id = models.IntegerField(primary_key=True)
service_id = models.ForeignKey(Servicenames)
dtime = models.DateTimeField(primary_key=True)
scale = models.IntegerField(primary_key=True)
cnt = models.IntegerField()
min = models.FloatField()
max = models.FloatField()
avg = models.FloatField()
threenines = models.FloatField()
class Meta:
db_table = u'servicestats'
forms.py :
class ServicesForm(forms.Form):
services=Servicenames.objects.all()
service = forms.ModelMultipleChoiceField(queryset=services,widget=forms.Select(attrs={'class':'colr',}))
scales = Servicestats.objects.values_list('scale', flat=True).distinct()
scale = forms.ModelChoiceField(queryset=scales,widget=forms.Select(attrs={'onchange': 'this.form.submit();'}))
DATATYPE_CHOICES = (
('cnt', 'cnt'),
('min', 'min'),
('max', 'max'),
('avg', 'avg'),
('threenines','threenines'),
)
datatype = forms.ChoiceField(choices = DATATYPE_CHOICES,widget=forms.Select(attrs={'onchange': 'this.form.submit();'}))
starttime = forms.DateTimeField(initial = datetime.now)
endtime = forms.DateTimeField(initial = datetime.now)
template.html :
% extends "bbase.html" %}
{% block extrascripts %}
$("#monitor").addClass("active")
{% endblock %}
{% block content %}
<div class="main">
<p>Welcome to the monitoring management system.</p>
<p>Stay tuned for more details</p>
</div>
<div>{{forms.service}}<span id="selection"><--Select services</span></div>
<div>{{forms.scale}}<span id="selection"><--Select resolution</span></div>
<div>{{forms.datatype}}<span id="selection"><--Select data type</span></div>
<div>{{forms.starttime}}<span id="selection"><--Select start time</span></div>
<div>{{forms.endtime}}<span id="selection"><--Select end time</span></div>
<input type = "submit" value = "Submit">
{% endblock %}
Thanks for the help.

Answer 1

It seems you are missing a form tag around your form!
try
<form action='' method='post'>{% csrf_token %}
...your form html...
...inputs...
...submit...
</form>