Django: how to display form errors for each model object in an embedded form

Question

I have an author model and a book model. The user can change the properties of all books of this author. I want to be able to display errors for each individual book, and not all the errors listed above, how can I do this?

Models

from django.db import models from django.forms import ModelForm, Textarea from django import forms class Author(models.Model): fname = models.CharField(max_length=100) lname = models.CharField(max_length=100) def fullname(self): return '%s %s' % (self.fname, self.lname) fullname = property(fullname) def __unicode__(self): return self.fullname class Books(models.Model): author = models.ForeignKey(Author) title = models.CharField(max_length=50) publisher = models.CharField(max_length=50) edition = models.CharField(max_length=50) comment = models.TextField() def __unicode__(self): return self.title 

VIEW

 def author_books_edit(request, author_id): a = get_object_or_404(Author, pk=author_id) authorsbooks = a.books_set.all() bookformset = inlineformset_factory(Author, Books, can_delete=True, can_order=True, exclude=('company',), extra=1) formset = bookformset(instance=a) if request.method == "POST": formset = bookformset(request.POST, request.FILES, instance=a) if formset.is_valid(): formset.save() else: form_errors = formset.errors return render_to_response('test/authors_books_edits.html', {'author': a, 'authorsbooks': authorsbooks, 'formset': formset, 'form_errors': form_errors}, context_instance=RequestContext(request)) return render_to_response('test/authors_books_edits.html', {'author': a, 'authorsbooks': authorsbooks, 'formset': formset,}, context_instance=RequestContext(request)) 

TEMPLATE

 #all errors are here {% for dict in form_errors %} {{ dict }} {% endfor %} #all forms are here, i want to pair the errors for each form <form method="post" action="/test/{{ author.id }}/books/"> {% csrf_token %} <table> {{ formset }} </table> <input type="submit" value="Submit"/> </form> 

UPDATED TEMPLATE: does not display errors

 <form method="post" action="/test/{{ author.id }}/books/"> {% formset.management_form %} {% csrf_token %} <table> {% for x in formset %} {{x.errors }} {{ x }} {% endfor %} </table> <input type="submit" value="Submit"/> 

Answer 1

EDIT

authors_books_edits.html

 <form method="post" action="/test/{{ author.id }}/books/"> {% csrf_token %} {{ formset.management_form }} {% for form in formset.forms %} {{ form.non_field_errors }} {{ form.errors }} <table> {{ form.as_table }} </table> {% endfor %} <input type="submit" value="Submit"/> </form> 

views.py

 from django.shortcuts import * from django.forms.models import inlineformset_factory from .models import * def author_books_edit(request, author_id): a = get_object_or_404(Author, pk=author_id) authorsbooks = a.books_set.all() bookformset = inlineformset_factory(Author, Books, can_delete=True, can_order=True, exclude=('company',), extra=1) formset = bookformset(instance=a) if request.method == "POST": formset = bookformset(request.POST, request.FILES, instance=a) if formset.is_valid(): formset.save() else: form_errors = formset.errors return render_to_response('authors_books_edits.html', {'author': a, 'authorsbooks': authorsbooks, 'formset': formset, 'form_errors': form_errors}, context_instance=RequestContext(request)) return render_to_response('authors_books_edits.html', {'author': a, 'authorsbooks': authorsbooks, 'formset': formset,}, context_instance=RequestContext(request)) 

models.py

 from django.db import models class Author(models.Model): fname = models.CharField(max_length=100) lname = models.CharField(max_length=100) def fullname(self): return '%s %s' % (self.fname, self.lname) fullname = property(fullname) def __unicode__(self): return self.fullname class Books(models.Model): author = models.ForeignKey(Author) title = models.CharField(max_length=50) publisher = models.CharField(max_length=50) edition = models.CharField(max_length=50) comment = models.TextField() def __unicode__(self): return self.title 

urls.py

 from django.conf.urls.defaults import patterns, include, url urlpatterns = patterns('testapp.views', url(r'test/(?P<author_id>\d+)/books/$', 'author_books_edit'), ) 

You can make another temporary application to test it.

It looks like this: http://imageshack.us/photo/my-images/824/screenshotat20120227190.png/

== END EDIT

You can iterate over forms as such:

 {% for form in formset.forms %} {{ form }} {% endfor %} 

In this case, refer to Django displaying the form using the template documentation: https://docs.djangoproject.com/en/dev/topics/forms/#displaying-a-form-using-a-template

Then, more interestingly, customizing the form template (see form.non_field_errors): https://docs.djangoproject.com/en/dev/topics/forms/#customizing-the-form-template

Answer 2

Assuming a book is a form you could do:

 {% for b in authorsbooks %} {{b.errors}} {% endfor %}