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POefficient way to save custom form fields to database
 

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  1. POefficient way to save custom form fields to database
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    <p>I am have trouble saving many fields into a database. I have a many 'outcomevalue_#' fields that get generated based on the number of outcomes I have. The user selects a subset of outcomes(relevantoutcomes) and enters the associated values. I'd like to save the associated values with the outcomes. So far I can only hardwire the field names which does not solve the problem.</p> <p>views.py</p> <pre><code>stateoption = get_object_or_404(StateOption, pk=stateoption_id) if request.method == "POST": form = UpdateStateOptionWithOutcomesForm(request.POST, instance=stateoption) if form.is_valid(): cd = form.cleaned_data outcomevalue = cd['outcomevalue_1'] #hardwired. This needs to be generalized. for outcome_id in request.POST.getlist('relevantoutcome'): stateoption_outcome = StateOptionOutcome.objects.create(stateoption=stateoption, relevantoutcome_id=int(outcome_id), outcomevalue=outcomevalue) </code></pre> <p>forms.py</p> <pre><code>class UpdateStateOptionWithOutcomesForm(forms.ModelForm): class Meta: model = StateOption def __init__(self, *args, **kwargs): super(UpdateStateOptionWithOutcomesForm, self).__init__(*args, **kwargs) self.fields['relevantoutcome']=forms.ModelMultipleChoiceField(queryset=Outcome.objects.all(),required=True, widget=forms.CheckboxSelectMultiple) outcome_qs=Outcome.objects.all() for outcome in outcome_qs: self.fields['outcomevalue_%s' % outcome.pk] = forms.CharField(required=False) </code></pre> <p><strong>Update</strong></p> <p>Here is my stripped down models.py</p> <pre><code>class StateOptionOutcome(models.Model): stateoption = models.ForeignKey(StateOption) relevantoutcome = models.ForeignKey(Outcome) outcomevalue = models.CharField(max_length=20) </code></pre> <p>After some playing around I have something like: </p> <pre><code> outcomelist = request.POST.getlist('relevantoutcome') for outcome_id in outcomelist: cd = form.cleaned_data outcomevalue = cd['outcomevalue_%s' % outcomelist[int(outcome_id)]] stateoption_outcome = StateOptionOutcome.objects.create(stateoption=stateoption, relevantoutcome_id=int(outcome_id), outcomevalue=outcomevalue) </code></pre> <p>but get error:</p> <pre><code>list index out of range </code></pre> <p>because it is grabbing the values in the list rather than the index position</p>
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