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django/tests/generic_relations/test_forms.py

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from django import forms
from django.contrib.contenttypes.forms import generic_inlineformset_factory
from django.contrib.contenttypes.models import ContentType
from django.db import models
from django.test import TestCase
from django.test.utils import isolate_apps
from .models import (
Animal,
ForProxyModelModel,
Gecko,
Mineral,
ProxyRelatedModel,
TaggedItem,
)
class CustomWidget(forms.TextInput):
pass
class TaggedItemForm(forms.ModelForm):
class Meta:
model = TaggedItem
fields = "__all__"
widgets = {"tag": CustomWidget}
class GenericInlineFormsetTests(TestCase):
def test_output(self):
GenericFormSet = generic_inlineformset_factory(TaggedItem, extra=1)
formset = GenericFormSet()
self.assertHTMLEqual(
"".join(form.as_p() for form in formset.forms),
"""
<p><label
for="id_generic_relations-taggeditem-content_type-object_id-0-tag">
Tag:</label>
<input id="id_generic_relations-taggeditem-content_type-object_id-0-tag"
type="text"
name="generic_relations-taggeditem-content_type-object_id-0-tag"
maxlength="50"></p>
<p><label
for="id_generic_relations-taggeditem-content_type-object_id-0-DELETE">
Delete:</label>
<input type="checkbox"
name="generic_relations-taggeditem-content_type-object_id-0-DELETE"
id="id_generic_relations-taggeditem-content_type-object_id-0-DELETE">
<input type="hidden"
name="generic_relations-taggeditem-content_type-object_id-0-id"
id="id_generic_relations-taggeditem-content_type-object_id-0-id"></p>
""",
)
formset = GenericFormSet(instance=Animal())
self.assertHTMLEqual(
"".join(form.as_p() for form in formset.forms),
"""
<p><label
for="id_generic_relations-taggeditem-content_type-object_id-0-tag">
Tag:</label>
<input id="id_generic_relations-taggeditem-content_type-object_id-0-tag"
type="text"
name="generic_relations-taggeditem-content_type-object_id-0-tag"
maxlength="50"></p>
<p><label
for="id_generic_relations-taggeditem-content_type-object_id-0-DELETE">
Delete:</label>
<input type="checkbox"
name="generic_relations-taggeditem-content_type-object_id-0-DELETE"
id="id_generic_relations-taggeditem-content_type-object_id-0-DELETE">
<input type="hidden"
name="generic_relations-taggeditem-content_type-object_id-0-id"
id="id_generic_relations-taggeditem-content_type-object_id-0-id"></p>
""",
)
platypus = Animal.objects.create(
common_name="Platypus",
latin_name="Ornithorhynchus anatinus",
)
platypus.tags.create(tag="shiny")
GenericFormSet = generic_inlineformset_factory(TaggedItem, extra=1)
formset = GenericFormSet(instance=platypus)
tagged_item_id = TaggedItem.objects.get(tag="shiny", object_id=platypus.id).id
self.assertHTMLEqual(
"".join(form.as_p() for form in formset.forms),
"""
<p><label
for="id_generic_relations-taggeditem-content_type-object_id-0-tag">
Tag:</label>
<input id="id_generic_relations-taggeditem-content_type-object_id-0-tag"
type="text"
name="generic_relations-taggeditem-content_type-object_id-0-tag"
value="shiny" maxlength="50"></p>
<p><label
for="id_generic_relations-taggeditem-content_type-object_id-0-DELETE">
Delete:</label>
<input type="checkbox"
name="generic_relations-taggeditem-content_type-object_id-0-DELETE"
id="id_generic_relations-taggeditem-content_type-object_id-0-DELETE">
<input type="hidden"
name="generic_relations-taggeditem-content_type-object_id-0-id"
value="%s"
id="id_generic_relations-taggeditem-content_type-object_id-0-id"></p>
<p><label
for="id_generic_relations-taggeditem-content_type-object_id-1-tag">
Tag:</label>
<input id="id_generic_relations-taggeditem-content_type-object_id-1-tag"
type="text"
name="generic_relations-taggeditem-content_type-object_id-1-tag"
maxlength="50"></p>
<p><label
for="id_generic_relations-taggeditem-content_type-object_id-1-DELETE">
Delete:</label>
<input type="checkbox"
name="generic_relations-taggeditem-content_type-object_id-1-DELETE"
id="id_generic_relations-taggeditem-content_type-object_id-1-DELETE">
<input type="hidden"
name="generic_relations-taggeditem-content_type-object_id-1-id"
id="id_generic_relations-taggeditem-content_type-object_id-1-id"></p>
"""
% tagged_item_id,
)
lion = Animal.objects.create(common_name="Lion", latin_name="Panthera leo")
formset = GenericFormSet(instance=lion, prefix="x")
self.assertHTMLEqual(
"".join(form.as_p() for form in formset.forms),
"""
<p><label for="id_x-0-tag">Tag:</label>
<input id="id_x-0-tag" type="text" name="x-0-tag" maxlength="50"></p>
<p><label for="id_x-0-DELETE">Delete:</label>
<input type="checkbox" name="x-0-DELETE" id="id_x-0-DELETE">
<input type="hidden" name="x-0-id" id="id_x-0-id"></p>
""",
)
def test_options(self):
TaggedItemFormSet = generic_inlineformset_factory(
TaggedItem,
can_delete=False,
exclude=["tag"],
extra=3,
)
platypus = Animal.objects.create(
common_name="Platypus", latin_name="Ornithorhynchus anatinus"
)
harmless = platypus.tags.create(tag="harmless")
mammal = platypus.tags.create(tag="mammal")
# Works without a queryset.
formset = TaggedItemFormSet(instance=platypus)
self.assertEqual(len(formset.forms), 5)
self.assertHTMLEqual(
formset.forms[0].as_p(),
'<input type="hidden" '
'name="generic_relations-taggeditem-content_type-object_id-0-id" '
'value="%s" '
'id="id_generic_relations-taggeditem-content_type-object_id-0-id">'
% harmless.pk,
)
self.assertEqual(formset.forms[0].instance, harmless)
self.assertEqual(formset.forms[1].instance, mammal)
self.assertIsNone(formset.forms[2].instance.pk)
# A queryset can be used to alter display ordering.
formset = TaggedItemFormSet(
instance=platypus, queryset=TaggedItem.objects.order_by("-tag")
)
self.assertEqual(len(formset.forms), 5)
self.assertEqual(formset.forms[0].instance, mammal)
self.assertEqual(formset.forms[1].instance, harmless)
self.assertIsNone(formset.forms[2].instance.pk)
# A queryset that omits items.
formset = TaggedItemFormSet(
instance=platypus,
queryset=TaggedItem.objects.filter(tag__startswith="harm"),
)
self.assertEqual(len(formset.forms), 4)
self.assertEqual(formset.forms[0].instance, harmless)
self.assertIsNone(formset.forms[1].instance.pk)
def test_get_queryset_ordering(self):
"""
BaseGenericInlineFormSet.get_queryset() adds default ordering, if
needed.
"""
inline_formset = generic_inlineformset_factory(TaggedItem, exclude=("tag",))
formset = inline_formset(instance=Gecko.objects.create())
self.assertIs(formset.get_queryset().ordered, True)
def test_initial(self):
quartz = Mineral.objects.create(name="Quartz", hardness=7)
GenericFormSet = generic_inlineformset_factory(TaggedItem, extra=1)
ctype = ContentType.objects.get_for_model(quartz)
initial_data = [
{
"tag": "lizard",
"content_type": ctype.pk,
"object_id": quartz.pk,
}
]
formset = GenericFormSet(initial=initial_data)
self.assertEqual(formset.forms[0].initial, initial_data[0])
def test_meta_widgets(self):
"""TaggedItemForm has a widget defined in Meta."""
Formset = generic_inlineformset_factory(TaggedItem, TaggedItemForm)
form = Formset().forms[0]
self.assertIsInstance(form["tag"].field.widget, CustomWidget)
@isolate_apps("generic_relations")
def test_incorrect_content_type(self):
class BadModel(models.Model):
content_type = models.PositiveIntegerField()
msg = (
"fk_name 'generic_relations.BadModel.content_type' is not a ForeignKey to "
"ContentType"
)
with self.assertRaisesMessage(Exception, msg):
generic_inlineformset_factory(BadModel, TaggedItemForm)
def test_save_new_uses_form_save(self):
class SaveTestForm(forms.ModelForm):
def save(self, *args, **kwargs):
self.instance.saved_by = "custom method"
return super().save(*args, **kwargs)
Formset = generic_inlineformset_factory(
ForProxyModelModel, fields="__all__", form=SaveTestForm
)
instance = ProxyRelatedModel.objects.create()
data = {
"form-TOTAL_FORMS": "1",
"form-INITIAL_FORMS": "0",
"form-MAX_NUM_FORMS": "",
"form-0-title": "foo",
}
formset = Formset(data, instance=instance, prefix="form")
self.assertTrue(formset.is_valid())
new_obj = formset.save()[0]
self.assertEqual(new_obj.saved_by, "custom method")
def test_save_new_for_proxy(self):
Formset = generic_inlineformset_factory(
ForProxyModelModel, fields="__all__", for_concrete_model=False
)
instance = ProxyRelatedModel.objects.create()
data = {
"form-TOTAL_FORMS": "1",
"form-INITIAL_FORMS": "0",
"form-MAX_NUM_FORMS": "",
"form-0-title": "foo",
}
formset = Formset(data, instance=instance, prefix="form")
self.assertTrue(formset.is_valid())
(new_obj,) = formset.save()
self.assertEqual(new_obj.obj, instance)
def test_save_new_for_concrete(self):
Formset = generic_inlineformset_factory(
ForProxyModelModel, fields="__all__", for_concrete_model=True
)
instance = ProxyRelatedModel.objects.create()
data = {
"form-TOTAL_FORMS": "1",
"form-INITIAL_FORMS": "0",
"form-MAX_NUM_FORMS": "",
"form-0-title": "foo",
}
formset = Formset(data, instance=instance, prefix="form")
self.assertTrue(formset.is_valid())
(new_obj,) = formset.save()
self.assertNotIsInstance(new_obj.obj, ProxyRelatedModel)
def test_initial_count(self):
GenericFormSet = generic_inlineformset_factory(TaggedItem)
data = {
"form-TOTAL_FORMS": "3",
"form-INITIAL_FORMS": "3",
"form-MAX_NUM_FORMS": "",
}
formset = GenericFormSet(data=data, prefix="form")
self.assertEqual(formset.initial_form_count(), 3)
formset = GenericFormSet(data=data, prefix="form", save_as_new=True)
self.assertEqual(formset.initial_form_count(), 0)
def test_save_as_new(self):
"""
The save_as_new parameter creates new items that are associated with
the object.
"""
lion = Animal.objects.create(common_name="Lion", latin_name="Panthera leo")
yellow = lion.tags.create(tag="yellow")
hairy = lion.tags.create(tag="hairy")
GenericFormSet = generic_inlineformset_factory(TaggedItem)
data = {
"form-TOTAL_FORMS": "3",
"form-INITIAL_FORMS": "2",
"form-MAX_NUM_FORMS": "",
"form-0-id": str(yellow.pk),
"form-0-tag": "hunts",
"form-1-id": str(hairy.pk),
"form-1-tag": "roars",
}
formset = GenericFormSet(data, instance=lion, prefix="form", save_as_new=True)
self.assertTrue(formset.is_valid())
tags = formset.save()
self.assertEqual([tag.tag for tag in tags], ["hunts", "roars"])
hunts, roars = tags
self.assertSequenceEqual(
lion.tags.order_by("tag"), [hairy, hunts, roars, yellow]
)
def test_absolute_max(self):
GenericFormSet = generic_inlineformset_factory(TaggedItem, absolute_max=1500)
data = {
"form-TOTAL_FORMS": "1501",
"form-INITIAL_FORMS": "0",
"form-MAX_NUM_FORMS": "0",
}
formset = GenericFormSet(data=data, prefix="form")
self.assertIs(formset.is_valid(), False)
self.assertEqual(len(formset.forms), 1500)
self.assertEqual(
formset.non_form_errors(),
["Please submit at most 1000 forms."],
)
def test_absolute_max_with_max_num(self):
GenericFormSet = generic_inlineformset_factory(
TaggedItem,
max_num=20,
absolute_max=100,
)
data = {
"form-TOTAL_FORMS": "101",
"form-INITIAL_FORMS": "0",
"form-MAX_NUM_FORMS": "0",
}
formset = GenericFormSet(data=data, prefix="form")
self.assertIs(formset.is_valid(), False)
self.assertEqual(len(formset.forms), 100)
self.assertEqual(
formset.non_form_errors(),
["Please submit at most 20 forms."],
)
def test_can_delete_extra(self):
GenericFormSet = generic_inlineformset_factory(
TaggedItem,
can_delete=True,
can_delete_extra=True,
extra=2,
)
formset = GenericFormSet()
self.assertEqual(len(formset), 2)
self.assertIn("DELETE", formset.forms[0].fields)
self.assertIn("DELETE", formset.forms[1].fields)
def test_disable_delete_extra(self):
GenericFormSet = generic_inlineformset_factory(
TaggedItem,
can_delete=True,
can_delete_extra=False,
extra=2,
)
formset = GenericFormSet()
self.assertEqual(len(formset), 2)
self.assertNotIn("DELETE", formset.forms[0].fields)
self.assertNotIn("DELETE", formset.forms[1].fields)