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POCan a django formset that dynamically adds fields have persistent data?
 

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    <p>I am making a formset in python/django and need to dynamically add more fields to a formset as a button is clicked. The form I'm working on is for my school asking students who they would like to disclose certain academic information to, and the button here allows them to add more fields for entering family members/people they want to disclose to.</p> <p>I have the button working to the point where the extra fields show up, and you can add as many as you like. Problem is, the data that was previously entered into the already existing fields gets deleted. However, only the things in the formset get deleted. Everything else that was filled out earlier in the form stays persistent.</p> <p>Is there any way to make the formset keep the data that was entered before the button was pressed?</p> <p>form.py:</p> <pre><code>from django import forms from models import Form, ParentForm, Contact from django.core.exceptions import ValidationError def fff (value): if value == "": raise ValidationError(message = 'Must choose a relation', code="a") # Create your forms here. class ModelForm(forms.ModelForm): class Meta: model = Form exclude = ('name', 'Relation',) class Parent(forms.Form): name = forms.CharField() CHOICES3 = ( ("", '-------'), ("MOM", 'Mother'), ("DAD", 'Father'), ("GRAN", 'Grandparent'), ("BRO", 'Brother'), ("SIS", 'Sister'), ("AUNT", 'Aunt'), ("UNC", 'Uncle'), ("HUSB", 'Husband'), ("FRIE", 'Friend'), ("OTHE", 'Other'), ("STEP", 'Stepparent'), ) Relation = forms.ChoiceField(required = False, widget = forms.Select, choices = CHOICES3, validators = [fff]) </code></pre> <p>models.py</p> <pre><code>from django.db import models from django import forms from content.validation import * from django.forms.models import modelformset_factory class Contact(models.Model): name = models.CharField(max_length=100) class Form(models.Model): CHOICES1 = ( ("ACCEPT", 'I agree with the previous statement.'), ) CHOICES2 = ( ("ACADEMIC", 'Academic Records'), ("FINANCIAL", 'Financial Records'), ("BOTH", 'I would like to share both'), ("NEITHER", 'I would like to share neither'), ("OLD", "I would like to keep my old sharing settings"), ) Please_accept = models.CharField(choices=CHOICES1, max_length=200) Which_information_would_you_like_to_share = models.CharField(choices=CHOICES2, max_length=2000) Full_Name_of_Student = models.CharField(max_length=100) Carthage_ID_Number = models.IntegerField(max_length=7) I_agree_the_above_information_is_correct_and_valid = models.BooleanField(validators=[validate_boolean]) Date = models.DateField(auto_now_add=True) name = models.ManyToManyField(Contact, through="ParentForm") class ParentForm(models.Model): student_name = models.ForeignKey(Form) name = models.ForeignKey(Contact) CHOICES3 = ( ("MOM", 'Mother'), ("DAD", 'Father'), ("GRAN", 'Grandparent'), ("BRO", 'Brother'), ("SIS", 'Sister'), ("AUNT", 'Aunt'), ("UNC", 'Uncle'), ("HUSB", 'Husband'), ("FRIE", 'Friend'), ("OTHE", 'Other'), ("STEP", 'Stepparent'), ) Relation = models.CharField(choices=CHOICES3, max_length=200) def __unicode__(self): return 'name: %r, student_name: %r' % (self.name, self.student_name) </code></pre> <p>and views.py</p> <pre><code>from django.shortcuts import render from django.http import HttpResponse from form import ModelForm, Parent from models import Form, ParentForm, Contact from django.http import HttpResponseRedirect from django.forms.formsets import formset_factory def create(request): ParentFormSet = formset_factory(Parent, extra=1) if request.POST: Parent_formset = ParentFormSet(request.POST, prefix='Parent_or_Third_Party_Name') if 'add' in request.POST: list=[] for kitties in Parent_formset: list.append({'Parent_or_Third_Party_Name-0n-ame': kitties.data['Parent_or_Third_Party_Name-0-name'], 'Parent_or_Third_Party_Name-0-Relation': kitties.data['Parent_or_Third_Party_Name-0-Relation']}) Parent_formset = ParentFormSet(prefix='Parent_or_Third_Party_Name', initial= list) form = ModelForm(request.POST) if form.is_valid() and Parent_formset.is_valid(): form_instance = form.save() for f in Parent_formset: if f.clean(): (obj, created) = ParentForm.objects.get_or_create(name=f.cleaned_data['name'], Relation=f.cleaned_data['Relation']) return HttpResponseRedirect('http://Google.com') else: form = ModelForm() Parent_formset = ParentFormSet(prefix='Parent_or_Third_Party_Name') return render(request, 'content/design.html', {'form': form, 'Parent_formset': Parent_formset}) def submitted(request): return render(request, 'content/design.html') </code></pre> <p>Thank you in advance!</p>
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