Django - taking values from POST request
Read about request objects that your views receive: https://docs.djangoproject.com/en/dev/ref/request-response/#httprequest-objects
Also your hidden field needs a reliable name and then a value:
<input type="hidden" name="title" value="{{ source.title }}">Then in a view:
request.POST.get("title", "")
For django forms you can do this;
form = UserLoginForm(data=request.POST) #getting the whole data from the user.user = form.save() #saving the details obtained from the user.username = user.cleaned_data.get("username") #where "username" in parenthesis is the name of the Charfield (the variale name i.e, username = forms.Charfield(max_length=64))