4
from django import forms
5
from django.db import models
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from django.utils.itercompat import sorted
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class Author(models.Model):
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name = models.CharField(max_length=100)
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def __unicode__(self):
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class BetterAuthor(Author):
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write_speed = models.IntegerField()
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class Book(models.Model):
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author = models.ForeignKey(Author)
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title = models.CharField(max_length=100)
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def __unicode__(self):
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class AuthorMeeting(models.Model):
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name = models.CharField(max_length=100)
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authors = models.ManyToManyField(Author)
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created = models.DateField(editable=False)
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def __unicode__(self):
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class CustomPrimaryKey(models.Model):
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my_pk = models.CharField(max_length=10, primary_key=True)
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some_field = models.CharField(max_length=100)
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# models for inheritance tests.
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class Place(models.Model):
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name = models.CharField(max_length=50)
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city = models.CharField(max_length=50)
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def __unicode__(self):
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class Owner(models.Model):
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auto_id = models.AutoField(primary_key=True)
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name = models.CharField(max_length=100)
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place = models.ForeignKey(Place)
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def __unicode__(self):
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return "%s at %s" % (self.name, self.place)
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class Location(models.Model):
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place = models.ForeignKey(Place, unique=True)
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# this is purely for testing the data doesn't matter here :)
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lat = models.CharField(max_length=100)
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lon = models.CharField(max_length=100)
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class OwnerProfile(models.Model):
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owner = models.OneToOneField(Owner, primary_key=True)
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age = models.PositiveIntegerField()
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def __unicode__(self):
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return "%s is %d" % (self.owner.name, self.age)
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class Restaurant(Place):
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serves_pizza = models.BooleanField()
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def __unicode__(self):
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class Product(models.Model):
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slug = models.SlugField(unique=True)
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def __unicode__(self):
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class Price(models.Model):
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price = models.DecimalField(max_digits=10, decimal_places=2)
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quantity = models.PositiveIntegerField()
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def __unicode__(self):
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return u"%s for %s" % (self.quantity, self.price)
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unique_together = (('price', 'quantity'),)
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class MexicanRestaurant(Restaurant):
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serves_tacos = models.BooleanField()
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# models for testing callable defaults (see bug #7975). If you define a model
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# with a callable default value, you cannot rely on the initial value in a
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class Person(models.Model):
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name = models.CharField(max_length=128)
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class Membership(models.Model):
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person = models.ForeignKey(Person)
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date_joined = models.DateTimeField(default=datetime.datetime.now)
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karma = models.IntegerField()
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__test__ = {'API_TESTS': """
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>>> from datetime import date
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>>> from django.forms.models import modelformset_factory
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>>> qs = Author.objects.all()
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>>> AuthorFormSet = modelformset_factory(Author, extra=3)
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>>> formset = AuthorFormSet(queryset=qs)
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>>> for form in formset.forms:
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... print form.as_p()
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<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>
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<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>
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<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>
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... 'form-TOTAL_FORMS': '3', # the number of forms rendered
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... 'form-INITIAL_FORMS': '0', # the number of forms with initial data
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... 'form-0-name': 'Charles Baudelaire',
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... 'form-1-name': 'Arthur Rimbaud',
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... 'form-2-name': '',
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>>> formset = AuthorFormSet(data=data, queryset=qs)
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>>> formset.is_valid()
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[<Author: Charles Baudelaire>, <Author: Arthur Rimbaud>]
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>>> for author in Author.objects.order_by('name'):
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... print author.name
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Gah! We forgot Paul Verlaine. Let's create a formset to edit the existing
148
authors with an extra form to add him. We *could* pass in a queryset to
149
restrict the Author objects we edit, but in this case we'll use it to display
150
them in alphabetical order by name.
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>>> qs = Author.objects.order_by('name')
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>>> AuthorFormSet = modelformset_factory(Author, extra=1, can_delete=False)
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>>> formset = AuthorFormSet(queryset=qs)
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>>> for form in formset.forms:
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... print form.as_p()
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<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>
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<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>
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<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>
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... 'form-TOTAL_FORMS': '3', # the number of forms rendered
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... 'form-INITIAL_FORMS': '2', # the number of forms with initial data
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... 'form-0-id': '2',
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... 'form-0-name': 'Arthur Rimbaud',
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... 'form-1-id': '1',
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... 'form-1-name': 'Charles Baudelaire',
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... 'form-2-name': 'Paul Verlaine',
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>>> formset = AuthorFormSet(data=data, queryset=qs)
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>>> formset.is_valid()
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# Only changed or new objects are returned from formset.save()
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[<Author: Paul Verlaine>]
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>>> for author in Author.objects.order_by('name'):
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... print author.name
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This probably shouldn't happen, but it will. If an add form was marked for
189
deltetion, make sure we don't save that form.
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>>> qs = Author.objects.order_by('name')
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>>> AuthorFormSet = modelformset_factory(Author, extra=1, can_delete=True)
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>>> formset = AuthorFormSet(queryset=qs)
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>>> for form in formset.forms:
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... print form.as_p()
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<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>
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<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>
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<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>
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<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>
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<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>
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<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>
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<p><label for="id_form-3-name">Name:</label> <input id="id_form-3-name" type="text" name="form-3-name" maxlength="100" /></p>
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<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>
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... 'form-TOTAL_FORMS': '4', # the number of forms rendered
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... 'form-INITIAL_FORMS': '3', # the number of forms with initial data
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... 'form-0-id': '2',
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... 'form-0-name': 'Arthur Rimbaud',
211
... 'form-1-id': '1',
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... 'form-1-name': 'Charles Baudelaire',
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... 'form-2-id': '3',
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... 'form-2-name': 'Paul Verlaine',
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... 'form-3-name': 'Walt Whitman',
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... 'form-3-DELETE': 'on',
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>>> formset = AuthorFormSet(data=data, queryset=qs)
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>>> formset.is_valid()
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# No objects were changed or saved so nothing will come back.
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>>> for author in Author.objects.order_by('name'):
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... print author.name
233
Let's edit a record to ensure save only returns that one record.
236
... 'form-TOTAL_FORMS': '4', # the number of forms rendered
237
... 'form-INITIAL_FORMS': '3', # the number of forms with initial data
238
... 'form-0-id': '2',
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... 'form-0-name': 'Walt Whitman',
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... 'form-1-id': '1',
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... 'form-1-name': 'Charles Baudelaire',
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... 'form-2-id': '3',
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... 'form-2-name': 'Paul Verlaine',
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... 'form-3-name': '',
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... 'form-3-DELETE': '',
248
>>> formset = AuthorFormSet(data=data, queryset=qs)
249
>>> formset.is_valid()
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# One record has changed.
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[<Author: Walt Whitman>]
256
Test the behavior of commit=False and save_m2m
258
>>> meeting = AuthorMeeting.objects.create(created=date.today())
259
>>> meeting.authors = Author.objects.all()
261
# create an Author instance to add to the meeting.
262
>>> new_author = Author.objects.create(name=u'John Steinbeck')
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>>> AuthorMeetingFormSet = modelformset_factory(AuthorMeeting, extra=1, can_delete=True)
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... 'form-TOTAL_FORMS': '2', # the number of forms rendered
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... 'form-INITIAL_FORMS': '1', # the number of forms with initial data
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... 'form-0-id': '1',
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... 'form-0-name': '2nd Tuesday of the Week Meeting',
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... 'form-0-authors': [2, 1, 3, 4],
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... 'form-1-name': '',
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... 'form-1-authors': '',
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... 'form-1-DELETE': '',
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>>> formset = AuthorMeetingFormSet(data=data, queryset=AuthorMeeting.objects.all())
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>>> formset.is_valid()
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>>> instances = formset.save(commit=False)
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>>> for instance in instances:
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... instance.created = date.today()
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>>> formset.save_m2m()
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>>> instances[0].authors.all()
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[<Author: Charles Baudelaire>, <Author: John Steinbeck>, <Author: Paul Verlaine>, <Author: Walt Whitman>]
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# delete the author we created to allow later tests to continue working.
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>>> new_author.delete()
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Test the behavior of max_num with model formsets. It should properly limit
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the queryset to reduce the amount of objects being pulled in when not being
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>>> qs = Author.objects.order_by('name')
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>>> AuthorFormSet = modelformset_factory(Author, max_num=2)
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>>> formset = AuthorFormSet(queryset=qs)
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>>> [sorted(x.items()) for x in formset.initial]
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[[('id', 1), ('name', u'Charles Baudelaire')], [('id', 3), ('name', u'Paul Verlaine')]]
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>>> AuthorFormSet = modelformset_factory(Author, max_num=3)
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>>> formset = AuthorFormSet(queryset=qs)
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>>> [sorted(x.items()) for x in formset.initial]
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[[('id', 1), ('name', u'Charles Baudelaire')], [('id', 3), ('name', u'Paul Verlaine')], [('id', 2), ('name', u'Walt Whitman')]]
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# Model inheritance in model formsets ########################################
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>>> BetterAuthorFormSet = modelformset_factory(BetterAuthor)
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>>> formset = BetterAuthorFormSet()
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>>> for form in formset.forms:
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... print form.as_p()
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<p><label for="id_form-0-name">Name:</label> <input id="id_form-0-name" type="text" name="form-0-name" maxlength="100" /></p>
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<p><label for="id_form-0-write_speed">Write speed:</label> <input type="text" name="form-0-write_speed" id="id_form-0-write_speed" /><input type="hidden" name="form-0-author_ptr" id="id_form-0-author_ptr" /></p>
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... 'form-TOTAL_FORMS': '1', # the number of forms rendered
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... 'form-INITIAL_FORMS': '0', # the number of forms with initial data
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... 'form-0-author_ptr': '',
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... 'form-0-name': 'Ernest Hemingway',
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... 'form-0-write_speed': '10',
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>>> formset = BetterAuthorFormSet(data)
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>>> formset.is_valid()
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[<BetterAuthor: Ernest Hemingway>]
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>>> hemingway_id = BetterAuthor.objects.get(name="Ernest Hemingway").pk
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>>> formset = BetterAuthorFormSet()
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>>> for form in formset.forms:
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... print form.as_p()
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<p><label for="id_form-0-name">Name:</label> <input id="id_form-0-name" type="text" name="form-0-name" value="Ernest Hemingway" maxlength="100" /></p>
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<p><label for="id_form-0-write_speed">Write speed:</label> <input type="text" name="form-0-write_speed" value="10" id="id_form-0-write_speed" /><input type="hidden" name="form-0-author_ptr" value="..." id="id_form-0-author_ptr" /></p>
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<p><label for="id_form-1-name">Name:</label> <input id="id_form-1-name" type="text" name="form-1-name" maxlength="100" /></p>
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<p><label for="id_form-1-write_speed">Write speed:</label> <input type="text" name="form-1-write_speed" id="id_form-1-write_speed" /><input type="hidden" name="form-1-author_ptr" id="id_form-1-author_ptr" /></p>
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... 'form-TOTAL_FORMS': '2', # the number of forms rendered
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... 'form-INITIAL_FORMS': '1', # the number of forms with initial data
340
... 'form-0-author_ptr': hemingway_id,
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... 'form-0-name': 'Ernest Hemingway',
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... 'form-0-write_speed': '10',
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... 'form-1-author_ptr': '',
344
... 'form-1-name': '',
345
... 'form-1-write_speed': '',
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>>> formset = BetterAuthorFormSet(data)
349
>>> formset.is_valid()
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# Inline Formsets ############################################################
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We can also create a formset that is tied to a parent model. This is how the
357
admin system's edit inline functionality works.
359
>>> from django.forms.models import inlineformset_factory
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>>> AuthorBooksFormSet = inlineformset_factory(Author, Book, can_delete=False, extra=3)
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>>> author = Author.objects.get(name='Charles Baudelaire')
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>>> formset = AuthorBooksFormSet(instance=author)
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>>> for form in formset.forms:
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... print form.as_p()
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<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>
368
<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>
369
<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>
372
... 'book_set-TOTAL_FORMS': '3', # the number of forms rendered
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... 'book_set-INITIAL_FORMS': '0', # the number of forms with initial data
374
... 'book_set-0-title': 'Les Fleurs du Mal',
375
... 'book_set-1-title': '',
376
... 'book_set-2-title': '',
379
>>> formset = AuthorBooksFormSet(data, instance=author)
380
>>> formset.is_valid()
384
[<Book: Les Fleurs du Mal>]
386
>>> for book in author.book_set.all():
391
Now that we've added a book to Charles Baudelaire, let's try adding another
392
one. This time though, an edit form will be available for every existing
395
>>> AuthorBooksFormSet = inlineformset_factory(Author, Book, can_delete=False, extra=2)
396
>>> author = Author.objects.get(name='Charles Baudelaire')
398
>>> formset = AuthorBooksFormSet(instance=author)
399
>>> for form in formset.forms:
400
... print form.as_p()
401
<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>
402
<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>
403
<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>
406
... 'book_set-TOTAL_FORMS': '3', # the number of forms rendered
407
... 'book_set-INITIAL_FORMS': '1', # the number of forms with initial data
408
... 'book_set-0-id': '1',
409
... 'book_set-0-title': 'Les Fleurs du Mal',
410
... 'book_set-1-title': 'Le Spleen de Paris',
411
... 'book_set-2-title': '',
414
>>> formset = AuthorBooksFormSet(data, instance=author)
415
>>> formset.is_valid()
419
[<Book: Le Spleen de Paris>]
421
As you can see, 'Le Spleen de Paris' is now a book belonging to Charles Baudelaire.
423
>>> for book in author.book_set.order_by('id'):
428
The save_as_new parameter lets you re-associate the data to a new instance.
429
This is used in the admin for save_as functionality.
432
... 'book_set-TOTAL_FORMS': '3', # the number of forms rendered
433
... 'book_set-INITIAL_FORMS': '2', # the number of forms with initial data
434
... 'book_set-0-id': '1',
435
... 'book_set-0-title': 'Les Fleurs du Mal',
436
... 'book_set-1-id': '2',
437
... 'book_set-1-title': 'Le Spleen de Paris',
438
... 'book_set-2-title': '',
441
>>> formset = AuthorBooksFormSet(data, instance=Author(), save_as_new=True)
442
>>> formset.is_valid()
445
>>> new_author = Author.objects.create(name='Charles Baudelaire')
446
>>> formset.instance = new_author
447
>>> [book for book in formset.save() if book.author.pk == new_author.pk]
448
[<Book: Les Fleurs du Mal>, <Book: Le Spleen de Paris>]
450
Test using a custom prefix on an inline formset.
452
>>> formset = AuthorBooksFormSet(prefix="test")
453
>>> for form in formset.forms:
454
... print form.as_p()
455
<p><label for="id_test-0-title">Title:</label> <input id="id_test-0-title" type="text" name="test-0-title" maxlength="100" /><input type="hidden" name="test-0-id" id="id_test-0-id" /></p>
456
<p><label for="id_test-1-title">Title:</label> <input id="id_test-1-title" type="text" name="test-1-title" maxlength="100" /><input type="hidden" name="test-1-id" id="id_test-1-id" /></p>
458
# Test a custom primary key ###################################################
460
We need to ensure that it is displayed
462
>>> CustomPrimaryKeyFormSet = modelformset_factory(CustomPrimaryKey)
463
>>> formset = CustomPrimaryKeyFormSet()
464
>>> for form in formset.forms:
465
... print form.as_p()
466
<p><label for="id_form-0-my_pk">My pk:</label> <input id="id_form-0-my_pk" type="text" name="form-0-my_pk" maxlength="10" /></p>
467
<p><label for="id_form-0-some_field">Some field:</label> <input id="id_form-0-some_field" type="text" name="form-0-some_field" maxlength="100" /></p>
469
# Custom primary keys with ForeignKey, OneToOneField and AutoField ############
471
>>> place = Place(name=u'Giordanos', city=u'Chicago')
474
>>> FormSet = inlineformset_factory(Place, Owner, extra=2, can_delete=False)
475
>>> formset = FormSet(instance=place)
476
>>> for form in formset.forms:
477
... print form.as_p()
478
<p><label for="id_owner_set-0-name">Name:</label> <input id="id_owner_set-0-name" type="text" name="owner_set-0-name" maxlength="100" /><input type="hidden" name="owner_set-0-auto_id" id="id_owner_set-0-auto_id" /></p>
479
<p><label for="id_owner_set-1-name">Name:</label> <input id="id_owner_set-1-name" type="text" name="owner_set-1-name" maxlength="100" /><input type="hidden" name="owner_set-1-auto_id" id="id_owner_set-1-auto_id" /></p>
482
... 'owner_set-TOTAL_FORMS': '2',
483
... 'owner_set-INITIAL_FORMS': '0',
484
... 'owner_set-0-auto_id': '',
485
... 'owner_set-0-name': u'Joe Perry',
486
... 'owner_set-1-auto_id': '',
487
... 'owner_set-1-name': '',
489
>>> formset = FormSet(data, instance=place)
490
>>> formset.is_valid()
493
[<Owner: Joe Perry at Giordanos>]
495
>>> formset = FormSet(instance=place)
496
>>> for form in formset.forms:
497
... print form.as_p()
498
<p><label for="id_owner_set-0-name">Name:</label> <input id="id_owner_set-0-name" type="text" name="owner_set-0-name" value="Joe Perry" maxlength="100" /><input type="hidden" name="owner_set-0-auto_id" value="1" id="id_owner_set-0-auto_id" /></p>
499
<p><label for="id_owner_set-1-name">Name:</label> <input id="id_owner_set-1-name" type="text" name="owner_set-1-name" maxlength="100" /><input type="hidden" name="owner_set-1-auto_id" id="id_owner_set-1-auto_id" /></p>
500
<p><label for="id_owner_set-2-name">Name:</label> <input id="id_owner_set-2-name" type="text" name="owner_set-2-name" maxlength="100" /><input type="hidden" name="owner_set-2-auto_id" id="id_owner_set-2-auto_id" /></p>
503
... 'owner_set-TOTAL_FORMS': '3',
504
... 'owner_set-INITIAL_FORMS': '1',
505
... 'owner_set-0-auto_id': u'1',
506
... 'owner_set-0-name': u'Joe Perry',
507
... 'owner_set-1-auto_id': '',
508
... 'owner_set-1-name': u'Jack Berry',
509
... 'owner_set-2-auto_id': '',
510
... 'owner_set-2-name': '',
512
>>> formset = FormSet(data, instance=place)
513
>>> formset.is_valid()
516
[<Owner: Jack Berry at Giordanos>]
518
# Ensure a custom primary key that is a ForeignKey or OneToOneField get rendered for the user to choose.
520
>>> FormSet = modelformset_factory(OwnerProfile)
521
>>> formset = FormSet()
522
>>> for form in formset.forms:
523
... print form.as_p()
524
<p><label for="id_form-0-owner">Owner:</label> <select name="form-0-owner" id="id_form-0-owner">
525
<option value="" selected="selected">---------</option>
526
<option value="1">Joe Perry at Giordanos</option>
527
<option value="2">Jack Berry at Giordanos</option>
529
<p><label for="id_form-0-age">Age:</label> <input type="text" name="form-0-age" id="id_form-0-age" /></p>
531
>>> owner = Owner.objects.get(name=u'Joe Perry')
532
>>> FormSet = inlineformset_factory(Owner, OwnerProfile, max_num=1, can_delete=False)
534
>>> formset = FormSet(instance=owner)
535
>>> for form in formset.forms:
536
... print form.as_p()
537
<p><label for="id_ownerprofile-0-age">Age:</label> <input type="text" name="ownerprofile-0-age" id="id_ownerprofile-0-age" /><input type="hidden" name="ownerprofile-0-owner" id="id_ownerprofile-0-owner" /></p>
540
... 'ownerprofile-TOTAL_FORMS': '1',
541
... 'ownerprofile-INITIAL_FORMS': '0',
542
... 'ownerprofile-0-owner': '',
543
... 'ownerprofile-0-age': u'54',
545
>>> formset = FormSet(data, instance=owner)
546
>>> formset.is_valid()
549
[<OwnerProfile: Joe Perry is 54>]
551
>>> formset = FormSet(instance=owner)
552
>>> for form in formset.forms:
553
... print form.as_p()
554
<p><label for="id_ownerprofile-0-age">Age:</label> <input type="text" name="ownerprofile-0-age" value="54" id="id_ownerprofile-0-age" /><input type="hidden" name="ownerprofile-0-owner" value="1" id="id_ownerprofile-0-owner" /></p>
557
... 'ownerprofile-TOTAL_FORMS': '1',
558
... 'ownerprofile-INITIAL_FORMS': '1',
559
... 'ownerprofile-0-owner': u'1',
560
... 'ownerprofile-0-age': u'55',
562
>>> formset = FormSet(data, instance=owner)
563
>>> formset.is_valid()
566
[<OwnerProfile: Joe Perry is 55>]
568
# ForeignKey with unique=True should enforce max_num=1
570
>>> FormSet = inlineformset_factory(Place, Location, can_delete=False)
571
>>> formset = FormSet(instance=place)
572
>>> for form in formset.forms:
573
... print form.as_p()
574
<p><label for="id_location_set-0-lat">Lat:</label> <input id="id_location_set-0-lat" type="text" name="location_set-0-lat" maxlength="100" /></p>
575
<p><label for="id_location_set-0-lon">Lon:</label> <input id="id_location_set-0-lon" type="text" name="location_set-0-lon" maxlength="100" /><input type="hidden" name="location_set-0-id" id="id_location_set-0-id" /></p>
577
# Foreign keys in parents ########################################
579
>>> from django.forms.models import _get_foreign_key
581
>>> type(_get_foreign_key(Restaurant, Owner))
582
<class 'django.db.models.fields.related.ForeignKey'>
583
>>> type(_get_foreign_key(MexicanRestaurant, Owner))
584
<class 'django.db.models.fields.related.ForeignKey'>
586
# unique/unique_together validation ###########################################
588
>>> FormSet = modelformset_factory(Product, extra=1)
590
... 'form-TOTAL_FORMS': '1',
591
... 'form-INITIAL_FORMS': '0',
592
... 'form-0-slug': 'car-red',
594
>>> formset = FormSet(data)
595
>>> formset.is_valid()
601
... 'form-TOTAL_FORMS': '1',
602
... 'form-INITIAL_FORMS': '0',
603
... 'form-0-slug': 'car-red',
605
>>> formset = FormSet(data)
606
>>> formset.is_valid()
609
[{'slug': [u'Product with this Slug already exists.']}]
613
>>> FormSet = modelformset_factory(Price, extra=1)
615
... 'form-TOTAL_FORMS': '1',
616
... 'form-INITIAL_FORMS': '0',
617
... 'form-0-price': u'12.00',
618
... 'form-0-quantity': '1',
620
>>> formset = FormSet(data)
621
>>> formset.is_valid()
624
[<Price: 1 for 12.00>]
627
... 'form-TOTAL_FORMS': '1',
628
... 'form-INITIAL_FORMS': '0',
629
... 'form-0-price': u'12.00',
630
... 'form-0-quantity': '1',
632
>>> formset = FormSet(data)
633
>>> formset.is_valid()
636
[{'__all__': [u'Price with this Price and Quantity already exists.']}]
638
# Use of callable defaults (see bug #7975).
640
>>> person = Person.objects.create(name='Ringo')
641
>>> FormSet = inlineformset_factory(Person, Membership, can_delete=False, extra=1)
642
>>> formset = FormSet(instance=person)
644
# Django will render a hidden field for model fields that have a callable
645
# default. This is required to ensure the value is tested for change correctly
646
# when determine what extra forms have changed to save.
648
>>> form = formset.forms[0] # this formset only has one form
649
>>> now = form.fields['date_joined'].initial
650
>>> print form.as_p()
651
<p><label for="id_membership_set-0-date_joined">Date joined:</label> <input type="text" name="membership_set-0-date_joined" value="..." id="id_membership_set-0-date_joined" /><input type="hidden" name="initial-membership_set-0-date_joined" value="..." id="id_membership_set-0-date_joined" /></p>
652
<p><label for="id_membership_set-0-karma">Karma:</label> <input type="text" name="membership_set-0-karma" id="id_membership_set-0-karma" /><input type="hidden" name="membership_set-0-id" id="id_membership_set-0-id" /></p>
654
# test for validation with callable defaults. Validations rely on hidden fields
657
... 'membership_set-TOTAL_FORMS': '1',
658
... 'membership_set-INITIAL_FORMS': '0',
659
... 'membership_set-0-date_joined': unicode(now.strftime('%Y-%m-%d %H:%M:%S')),
660
... 'initial-membership_set-0-date_joined': unicode(now.strftime('%Y-%m-%d %H:%M:%S')),
661
... 'membership_set-0-karma': '',
663
>>> formset = FormSet(data, instance=person)
664
>>> formset.is_valid()
667
# now test for when the data changes
669
>>> one_day_later = now + datetime.timedelta(days=1)
671
... 'membership_set-TOTAL_FORMS': '1',
672
... 'membership_set-INITIAL_FORMS': '0',
673
... 'membership_set-0-date_joined': unicode(one_day_later.strftime('%Y-%m-%d %H:%M:%S')),
674
... 'initial-membership_set-0-date_joined': unicode(now.strftime('%Y-%m-%d %H:%M:%S')),
675
... 'membership_set-0-karma': '',
677
>>> formset = FormSet(filled_data, instance=person)
678
>>> formset.is_valid()
681
# now test with split datetime fields
683
>>> class MembershipForm(forms.ModelForm):
684
... date_joined = forms.SplitDateTimeField(initial=now)
686
... model = Membership
687
... def __init__(self, **kwargs):
688
... super(MembershipForm, self).__init__(**kwargs)
689
... self.fields['date_joined'].widget = forms.SplitDateTimeWidget()
691
>>> FormSet = inlineformset_factory(Person, Membership, form=MembershipForm, can_delete=False, extra=1)
693
... 'membership_set-TOTAL_FORMS': '1',
694
... 'membership_set-INITIAL_FORMS': '0',
695
... 'membership_set-0-date_joined_0': unicode(now.strftime('%Y-%m-%d')),
696
... 'membership_set-0-date_joined_1': unicode(now.strftime('%H:%M:%S')),
697
... 'initial-membership_set-0-date_joined': unicode(now.strftime('%Y-%m-%d %H:%M:%S')),
698
... 'membership_set-0-karma': '',
700
>>> formset = FormSet(data, instance=person)
701
>>> formset.is_valid()
added
removed
tests/modeltests/model_formsets/models.py
