newforms-admin: Fixed #5733. Added formset_for_queryset. This is backwards incompatble for anyone using formset_for_model or BaseModelFormSet.

git-svn-id: http://code.djangoproject.com/svn/django/branches/newforms-admin@6655 bcc190cf-cafb-0310-a4f2-bffc1f526a37

1 files changed, 204 insertions, 0 deletions

diff --git a/tests/modeltests/model_formsets/models.py b/tests/modeltests/model_formsets/models.py
new file mode 100644
index 0000000000..cac73d707f
--- /dev/null
+++ b/tests/modeltests/model_formsets/models.py
@@ -0,0 +1,204 @@
+from django.db import models
+
+class Author(models.Model):
+    name = models.CharField(max_length=100)
+
+    def __unicode__(self):
+        return self.name
+
+class Book(models.Model):
+    author = models.ForeignKey(Author)
+    title = models.CharField(max_length=100)
+
+    def __unicode__(self):
+        return self.title
+
+
+__test__ = {'API_TESTS': """
+
+>>> from django.newforms.models import formset_for_queryset, formset_for_model
+
+>>> qs = Author.objects.all()
+>>> AuthorFormSet = formset_for_model(Author, extra=3)
+
+>>> formset = AuthorFormSet()
+>>> for form in formset.forms:
+...     print form.as_p()
+<p><label for="id_form-0-name">Name:</label> <input id="id_form-0-name" type="text" name="form-0-name" maxlength="100" /><input type="hidden" name="form-0-id" id="id_form-0-id" /></p>
+<p><label for="id_form-1-name">Name:</label> <input id="id_form-1-name" type="text" name="form-1-name" maxlength="100" /><input type="hidden" name="form-1-id" id="id_form-1-id" /></p>
+<p><label for="id_form-2-name">Name:</label> <input id="id_form-2-name" type="text" name="form-2-name" maxlength="100" /><input type="hidden" name="form-2-id" id="id_form-2-id" /></p>
+
+>>> data = {
+...     'form-COUNT': '3',
+...     'form-0-name': 'Charles Baudelaire',
+...     'form-1-name': 'Arthur Rimbaud',
+...     'form-2-name': '',
+... }
+
+>>> formset = AuthorFormSet(data=data)
+>>> formset.is_valid()
+True
+
+>>> formset.save()
+[<Author: Charles Baudelaire>, <Author: Arthur Rimbaud>]
+
+>>> for author in Author.objects.order_by('name'):
+...     print author.name
+Arthur Rimbaud
+Charles Baudelaire
+
+
+Gah! We forgot Paul Verlaine. Let's create a formset to edit the existing
+authors with an extra form to add him. This time we'll use formset_for_queryset.
+We *could* use formset_for_queryset to restrict the Author objects we edit,
+but in that case we'll use it to display them in alphabetical order by name.
+
+>>> qs = Author.objects.order_by('name')
+>>> AuthorFormSet = formset_for_queryset(qs, extra=1, deletable=False)
+
+>>> formset = AuthorFormSet()
+>>> for form in formset.forms:
+...     print form.as_p()
+<p><label for="id_form-0-name">Name:</label> <input id="id_form-0-name" type="text" name="form-0-name" value="Arthur Rimbaud" maxlength="100" /><input type="hidden" name="form-0-id" value="2" id="id_form-0-id" /></p>
+<p><label for="id_form-1-name">Name:</label> <input id="id_form-1-name" type="text" name="form-1-name" value="Charles Baudelaire" maxlength="100" /><input type="hidden" name="form-1-id" value="1" id="id_form-1-id" /></p>
+<p><label for="id_form-2-name">Name:</label> <input id="id_form-2-name" type="text" name="form-2-name" maxlength="100" /><input type="hidden" name="form-2-id" id="id_form-2-id" /></p>
+
+
+>>> data = {
+...     'form-COUNT': '3',
+...     'form-0-id': '2',
+...     'form-0-name': 'Arthur Rimbaud',
+...     'form-1-id': '1',
+...     'form-1-name': 'Charles Baudelaire',
+...     'form-2-name': 'Paul Verlaine',
+... }
+
+>>> formset = AuthorFormSet(data=data)
+>>> formset.is_valid()
+True
+
+>>> formset.save()
+[<Author: Arthur Rimbaud>, <Author: Charles Baudelaire>, <Author: Paul Verlaine>]
+
+>>> for author in Author.objects.order_by('name'):
+...     print author.name
+Arthur Rimbaud
+Charles Baudelaire
+Paul Verlaine
+
+
+This probably shouldn't happen, but it will. If an add form was marked for
+deltetion, make sure we don't save that form.
+
+>>> qs = Author.objects.order_by('name')
+>>> AuthorFormSet = formset_for_queryset(qs, extra=1, deletable=True)
+
+>>> formset = AuthorFormSet()
+>>> for form in formset.forms:
+...     print form.as_p()
+<p><label for="id_form-0-name">Name:</label> <input id="id_form-0-name" type="text" name="form-0-name" value="Arthur Rimbaud" maxlength="100" /></p>
+<p><label for="id_form-0-DELETE">Delete:</label> <input type="checkbox" name="form-0-DELETE" id="id_form-0-DELETE" /><input type="hidden" name="form-0-id" value="2" id="id_form-0-id" /></p>
+<p><label for="id_form-1-name">Name:</label> <input id="id_form-1-name" type="text" name="form-1-name" value="Charles Baudelaire" maxlength="100" /></p>
+<p><label for="id_form-1-DELETE">Delete:</label> <input type="checkbox" name="form-1-DELETE" id="id_form-1-DELETE" /><input type="hidden" name="form-1-id" value="1" id="id_form-1-id" /></p>
+<p><label for="id_form-2-name">Name:</label> <input id="id_form-2-name" type="text" name="form-2-name" value="Paul Verlaine" maxlength="100" /></p>
+<p><label for="id_form-2-DELETE">Delete:</label> <input type="checkbox" name="form-2-DELETE" id="id_form-2-DELETE" /><input type="hidden" name="form-2-id" value="3" id="id_form-2-id" /></p>
+<p><label for="id_form-3-name">Name:</label> <input id="id_form-3-name" type="text" name="form-3-name" maxlength="100" /></p>
+<p><label for="id_form-3-DELETE">Delete:</label> <input type="checkbox" name="form-3-DELETE" id="id_form-3-DELETE" /><input type="hidden" name="form-3-id" id="id_form-3-id" /></p>
+
+>>> data = {
+...     'form-COUNT': '4',
+...     'form-0-id': '2',
+...     'form-0-name': 'Arthur Rimbaud',
+...     'form-1-id': '1',
+...     'form-1-name': 'Charles Baudelaire',
+...     'form-2-id': '3',
+...     'form-2-name': 'Paul Verlaine',
+...     'form-3-name': 'Walt Whitman',
+...     'form-3-DELETE': 'on',
+... }
+
+>>> formset = AuthorFormSet(data=data)
+>>> formset.is_valid()
+True
+
+>>> formset.save()
+[<Author: Arthur Rimbaud>, <Author: Charles Baudelaire>, <Author: Paul Verlaine>]
+
+>>> for author in Author.objects.order_by('name'):
+...     print author.name
+Arthur Rimbaud
+Charles Baudelaire
+Paul Verlaine
+
+
+We can also create a formset that is tied to a parent model. This is how the
+admin system's edit inline functionality works.
+
+>>> from django.newforms.models import inline_formset
+
+>>> AuthorBooksFormSet = inline_formset(Author, Book, deletable=False, extra=3)
+>>> author = Author.objects.get(name='Charles Baudelaire')
+
+>>> formset = AuthorBooksFormSet(author)
+>>> for form in formset.forms:
+...     print form.as_p()
+<p><label for="id_book_set-0-title">Title:</label> <input id="id_book_set-0-title" type="text" name="book_set-0-title" maxlength="100" /><input type="hidden" name="book_set-0-id" id="id_book_set-0-id" /></p>
+<p><label for="id_book_set-1-title">Title:</label> <input id="id_book_set-1-title" type="text" name="book_set-1-title" maxlength="100" /><input type="hidden" name="book_set-1-id" id="id_book_set-1-id" /></p>
+<p><label for="id_book_set-2-title">Title:</label> <input id="id_book_set-2-title" type="text" name="book_set-2-title" maxlength="100" /><input type="hidden" name="book_set-2-id" id="id_book_set-2-id" /></p>
+
+>>> data = {
+...     'book_set-COUNT': '3',
+...     'book_set-0-title': 'Les Fleurs du Mal',
+...     'book_set-1-title': '',
+...     'book_set-2-title': '',
+... }
+
+>>> formset = AuthorBooksFormSet(author, data=data)
+>>> formset.is_valid()
+True
+
+>>> formset.save()
+[<Book: Les Fleurs du Mal>]
+
+>>> for book in author.book_set.all():
+...     print book.title
+Les Fleurs du Mal
+
+
+Now that we've added a book to Charles Baudelaire, let's try adding another
+one. This time though, an edit form will be available for every existing
+book.
+
+>>> AuthorBooksFormSet = inline_formset(Author, Book, deletable=False, extra=2)
+>>> author = Author.objects.get(name='Charles Baudelaire')
+
+>>> formset = AuthorBooksFormSet(author)
+>>> for form in formset.forms:
+...     print form.as_p()
+<p><label for="id_book_set-0-title">Title:</label> <input id="id_book_set-0-title" type="text" name="book_set-0-title" value="Les Fleurs du Mal" maxlength="100" /><input type="hidden" name="book_set-0-id" value="1" id="id_book_set-0-id" /></p>
+<p><label for="id_book_set-1-title">Title:</label> <input id="id_book_set-1-title" type="text" name="book_set-1-title" maxlength="100" /><input type="hidden" name="book_set-1-id" id="id_book_set-1-id" /></p>
+<p><label for="id_book_set-2-title">Title:</label> <input id="id_book_set-2-title" type="text" name="book_set-2-title" maxlength="100" /><input type="hidden" name="book_set-2-id" id="id_book_set-2-id" /></p>
+
+>>> data = {
+...     'book_set-COUNT': '3',
+...     'book_set-0-id': '1',
+...     'book_set-0-title': 'Les Fleurs du Mal',
+...     'book_set-1-title': 'Le Spleen de Paris',
+...     'book_set-2-title': '',
+... }
+
+>>> formset = AuthorBooksFormSet(author, data=data)
+>>> formset.is_valid()
+True
+
+>>> formset.save()
+[<Book: Les Fleurs du Mal>, <Book: Le Spleen de Paris>]
+
+As you can see, 'Le Spleen de Paris' is now a book belonging to Charles Baudelaire.
+
+>>> for book in author.book_set.order_by('title'):
+...     print book.title
+Le Spleen de Paris
+Les Fleurs du Mal
+
+"""}