StackOverflow2013

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POInner FormSet requires manual refreshing from request
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2013-06-29T17:28:25.613
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2013-06-29T17:52:28.300
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text
Body
<p>I noticed weird behaviour of FormSet which is nested inside another form.<br> Sample app: </p> <pre><code>#### forms: #### class BookForm(forms.Form): title = forms.CharField() BookFormSet = formset_factory(BookForm, extra=3) class PublisherForm(forms.Form): name = forms.CharField() books = BookFormSet(prefix='books') </code></pre> <p>Class-based view for displaying forms:</p> <pre><code>#### views: #### class PublisherCreateView(FormView): template_name = 'library/create.html' form_class = PublisherForm def form_valid(self, publisherForm): # workaround: somehow publisherForm's inner list need to be restored from POST request: # otherwise it'll be empty FormSet as if it was constructed using BookFormSet(prefix='books') books = BookFormSet(self.request.POST, self.request.FILES, prefix='books') publisherForm.books = books do_sth_fancy_dancy_with(publisherForm) return super(PublisherCreateView, self).form_valid(publisherForm) </code></pre> <p>An the template used for displaying PublisherForm: </p> <pre><code>#### template: #### <form action="." method="post">{% csrf_token %} <div class="section"> {{ form.as_p }} </div> <h2>Books</h2> <div class="books"> {{ form.books.as_p }} <p><input type="button" id="add-row" value="Add another book"/></p> </div> <input type="submit" value="Save"/> </form> </code></pre> <p>If I omit first 2 lines in form_valid the list is untouched by its modification in a browser.<br> A nice explanation why is this happening, or maybe amend of my code would be more than appreciated</p>
Tags
<django><django-forms>
Title
Inner FormSet requires manual refreshing from request
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1. PO
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