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tests.py
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tests.py
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from __future__ import absolute_import, unicode_literals
import datetime
import os
from decimal import Decimal
from django import forms
from django.core.files.uploadedfile import SimpleUploadedFile
from django.core.validators import ValidationError
from django.db import connection
from django.forms.models import model_to_dict
from django.utils.unittest import skipUnless
from django.test import TestCase
from django.utils import six
from .models import (Article, ArticleStatus, BetterWriter, BigInt, Book,
Category, CommaSeparatedInteger, CustomFieldForExclusionModel, DerivedBook,
DerivedPost, ExplicitPK, FlexibleDatePost, ImprovedArticle,
ImprovedArticleWithParentLink, Inventory, PhoneNumber, Post, Price,
Product, TextFile, Writer, WriterProfile, test_images)
if test_images:
from .models import ImageFile, OptionalImageFile
class ImageFileForm(forms.ModelForm):
class Meta:
model = ImageFile
class OptionalImageFileForm(forms.ModelForm):
class Meta:
model = OptionalImageFile
class ProductForm(forms.ModelForm):
class Meta:
model = Product
class PriceForm(forms.ModelForm):
class Meta:
model = Price
class BookForm(forms.ModelForm):
class Meta:
model = Book
class DerivedBookForm(forms.ModelForm):
class Meta:
model = DerivedBook
class ExplicitPKForm(forms.ModelForm):
class Meta:
model = ExplicitPK
fields = ('key', 'desc',)
class PostForm(forms.ModelForm):
class Meta:
model = Post
class DerivedPostForm(forms.ModelForm):
class Meta:
model = DerivedPost
class CustomWriterForm(forms.ModelForm):
name = forms.CharField(required=False)
class Meta:
model = Writer
class FlexDatePostForm(forms.ModelForm):
class Meta:
model = FlexibleDatePost
class BaseCategoryForm(forms.ModelForm):
class Meta:
model = Category
class ArticleForm(forms.ModelForm):
class Meta:
model = Article
class ArticleForm(forms.ModelForm):
class Meta:
model = Article
class PartialArticleForm(forms.ModelForm):
class Meta:
model = Article
fields = ('headline','pub_date')
class RoykoForm(forms.ModelForm):
class Meta:
model = Writer
class TestArticleForm(forms.ModelForm):
class Meta:
model = Article
class PartialArticleFormWithSlug(forms.ModelForm):
class Meta:
model = Article
fields=('headline', 'slug', 'pub_date')
class ArticleStatusForm(forms.ModelForm):
class Meta:
model = ArticleStatus
class InventoryForm(forms.ModelForm):
class Meta:
model = Inventory
class SelectInventoryForm(forms.Form):
items = forms.ModelMultipleChoiceField(Inventory.objects.all(), to_field_name='barcode')
class CustomFieldForExclusionForm(forms.ModelForm):
class Meta:
model = CustomFieldForExclusionModel
fields = ['name', 'markup']
class ShortCategory(forms.ModelForm):
name = forms.CharField(max_length=5)
slug = forms.CharField(max_length=5)
url = forms.CharField(max_length=3)
class ImprovedArticleForm(forms.ModelForm):
class Meta:
model = ImprovedArticle
class ImprovedArticleWithParentLinkForm(forms.ModelForm):
class Meta:
model = ImprovedArticleWithParentLink
class BetterWriterForm(forms.ModelForm):
class Meta:
model = BetterWriter
class WriterProfileForm(forms.ModelForm):
class Meta:
model = WriterProfile
class PhoneNumberForm(forms.ModelForm):
class Meta:
model = PhoneNumber
class TextFileForm(forms.ModelForm):
class Meta:
model = TextFile
class BigIntForm(forms.ModelForm):
class Meta:
model = BigInt
class ModelFormWithMedia(forms.ModelForm):
class Media:
js = ('/some/form/javascript',)
css = {
'all': ('/some/form/css',)
}
class Meta:
model = PhoneNumber
class CommaSeparatedIntegerForm(forms.ModelForm):
class Meta:
model = CommaSeparatedInteger
class PriceFormWithoutQuantity(forms.ModelForm):
class Meta:
model = Price
exclude = ('quantity',)
class ModelFormBaseTest(TestCase):
def test_base_form(self):
self.assertEqual(list(BaseCategoryForm.base_fields),
['name', 'slug', 'url'])
def test_extra_fields(self):
class ExtraFields(BaseCategoryForm):
some_extra_field = forms.BooleanField()
self.assertEqual(list(ExtraFields.base_fields),
['name', 'slug', 'url', 'some_extra_field'])
def test_replace_field(self):
class ReplaceField(forms.ModelForm):
url = forms.BooleanField()
class Meta:
model = Category
self.assertTrue(isinstance(ReplaceField.base_fields['url'],
forms.fields.BooleanField))
def test_override_field(self):
class WriterForm(forms.ModelForm):
book = forms.CharField(required=False)
class Meta:
model = Writer
wf = WriterForm({'name': 'Richard Lockridge'})
self.assertTrue(wf.is_valid())
def test_limit_fields(self):
class LimitFields(forms.ModelForm):
class Meta:
model = Category
fields = ['url']
self.assertEqual(list(LimitFields.base_fields),
['url'])
def test_exclude_fields(self):
class ExcludeFields(forms.ModelForm):
class Meta:
model = Category
exclude = ['url']
self.assertEqual(list(ExcludeFields.base_fields),
['name', 'slug'])
def test_confused_form(self):
class ConfusedForm(forms.ModelForm):
""" Using 'fields' *and* 'exclude'. Not sure why you'd want to do
this, but uh, "be liberal in what you accept" and all.
"""
class Meta:
model = Category
fields = ['name', 'url']
exclude = ['url']
self.assertEqual(list(ConfusedForm.base_fields),
['name'])
def test_mixmodel_form(self):
class MixModelForm(BaseCategoryForm):
""" Don't allow more than one 'model' definition in the
inheritance hierarchy. Technically, it would generate a valid
form, but the fact that the resulting save method won't deal with
multiple objects is likely to trip up people not familiar with the
mechanics.
"""
class Meta:
model = Article
# MixModelForm is now an Article-related thing, because MixModelForm.Meta
# overrides BaseCategoryForm.Meta.
self.assertEqual(
list(MixModelForm.base_fields),
['headline', 'slug', 'pub_date', 'writer', 'article', 'categories', 'status']
)
def test_article_form(self):
self.assertEqual(
list(ArticleForm.base_fields),
['headline', 'slug', 'pub_date', 'writer', 'article', 'categories', 'status']
)
def test_bad_form(self):
#First class with a Meta class wins...
class BadForm(ArticleForm, BaseCategoryForm):
pass
self.assertEqual(
list(BadForm.base_fields),
['headline', 'slug', 'pub_date', 'writer', 'article', 'categories', 'status']
)
def test_subcategory_form(self):
class SubCategoryForm(BaseCategoryForm):
""" Subclassing without specifying a Meta on the class will use
the parent's Meta (or the first parent in the MRO if there are
multiple parent classes).
"""
pass
self.assertEqual(list(SubCategoryForm.base_fields),
['name', 'slug', 'url'])
def test_subclassmeta_form(self):
class SomeCategoryForm(forms.ModelForm):
checkbox = forms.BooleanField()
class Meta:
model = Category
class SubclassMeta(SomeCategoryForm):
""" We can also subclass the Meta inner class to change the fields
list.
"""
class Meta(SomeCategoryForm.Meta):
exclude = ['url']
self.assertHTMLEqual(
str(SubclassMeta()),
"""<tr><th><label for="id_name">Name:</label></th><td><input id="id_name" type="text" name="name" maxlength="20" /></td></tr>
<tr><th><label for="id_slug">Slug:</label></th><td><input id="id_slug" type="text" name="slug" maxlength="20" /></td></tr>
<tr><th><label for="id_checkbox">Checkbox:</label></th><td><input type="checkbox" name="checkbox" id="id_checkbox" /></td></tr>"""
)
def test_orderfields_form(self):
class OrderFields(forms.ModelForm):
class Meta:
model = Category
fields = ['url', 'name']
self.assertEqual(list(OrderFields.base_fields),
['url', 'name'])
self.assertHTMLEqual(
str(OrderFields()),
"""<tr><th><label for="id_url">The URL:</label></th><td><input id="id_url" type="text" name="url" maxlength="40" /></td></tr>
<tr><th><label for="id_name">Name:</label></th><td><input id="id_name" type="text" name="name" maxlength="20" /></td></tr>"""
)
def test_orderfields2_form(self):
class OrderFields2(forms.ModelForm):
class Meta:
model = Category
fields = ['slug', 'url', 'name']
exclude = ['url']
self.assertEqual(list(OrderFields2.base_fields),
['slug', 'name'])
class TestWidgetForm(forms.ModelForm):
class Meta:
model = Category
fields = ['name', 'url', 'slug']
widgets = {
'name': forms.Textarea,
'url': forms.TextInput(attrs={'class': 'url'})
}
class TestWidgets(TestCase):
def test_base_widgets(self):
frm = TestWidgetForm()
self.assertHTMLEqual(
str(frm['name']),
'<textarea id="id_name" rows="10" cols="40" name="name"></textarea>'
)
self.assertHTMLEqual(
str(frm['url']),
'<input id="id_url" type="text" class="url" name="url" maxlength="40" />'
)
self.assertHTMLEqual(
str(frm['slug']),
'<input id="id_slug" type="text" name="slug" maxlength="20" />'
)
class IncompleteCategoryFormWithFields(forms.ModelForm):
"""
A form that replaces the model's url field with a custom one. This should
prevent the model field's validation from being called.
"""
url = forms.CharField(required=False)
class Meta:
fields = ('name', 'slug')
model = Category
class IncompleteCategoryFormWithExclude(forms.ModelForm):
"""
A form that replaces the model's url field with a custom one. This should
prevent the model field's validation from being called.
"""
url = forms.CharField(required=False)
class Meta:
exclude = ['url']
model = Category
class ValidationTest(TestCase):
def test_validates_with_replaced_field_not_specified(self):
form = IncompleteCategoryFormWithFields(data={'name': 'some name', 'slug': 'some-slug'})
assert form.is_valid()
def test_validates_with_replaced_field_excluded(self):
form = IncompleteCategoryFormWithExclude(data={'name': 'some name', 'slug': 'some-slug'})
assert form.is_valid()
def test_notrequired_overrides_notblank(self):
form = CustomWriterForm({})
assert form.is_valid()
# unique/unique_together validation
class UniqueTest(TestCase):
def setUp(self):
self.writer = Writer.objects.create(name='Mike Royko')
def test_simple_unique(self):
form = ProductForm({'slug': 'teddy-bear-blue'})
self.assertTrue(form.is_valid())
obj = form.save()
form = ProductForm({'slug': 'teddy-bear-blue'})
self.assertEqual(len(form.errors), 1)
self.assertEqual(form.errors['slug'], ['Product with this Slug already exists.'])
form = ProductForm({'slug': 'teddy-bear-blue'}, instance=obj)
self.assertTrue(form.is_valid())
def test_unique_together(self):
"""ModelForm test of unique_together constraint"""
form = PriceForm({'price': '6.00', 'quantity': '1'})
self.assertTrue(form.is_valid())
form.save()
form = PriceForm({'price': '6.00', 'quantity': '1'})
self.assertFalse(form.is_valid())
self.assertEqual(len(form.errors), 1)
self.assertEqual(form.errors['__all__'], ['Price with this Price and Quantity already exists.'])
def test_unique_null(self):
title = 'I May Be Wrong But I Doubt It'
form = BookForm({'title': title, 'author': self.writer.pk})
self.assertTrue(form.is_valid())
form.save()
form = BookForm({'title': title, 'author': self.writer.pk})
self.assertFalse(form.is_valid())
self.assertEqual(len(form.errors), 1)
self.assertEqual(form.errors['__all__'], ['Book with this Title and Author already exists.'])
form = BookForm({'title': title})
self.assertTrue(form.is_valid())
form.save()
form = BookForm({'title': title})
self.assertTrue(form.is_valid())
def test_inherited_unique(self):
title = 'Boss'
Book.objects.create(title=title, author=self.writer, special_id=1)
form = DerivedBookForm({'title': 'Other', 'author': self.writer.pk, 'special_id': '1', 'isbn': '12345'})
self.assertFalse(form.is_valid())
self.assertEqual(len(form.errors), 1)
self.assertEqual(form.errors['special_id'], ['Book with this Special id already exists.'])
def test_inherited_unique_together(self):
title = 'Boss'
form = BookForm({'title': title, 'author': self.writer.pk})
self.assertTrue(form.is_valid())
form.save()
form = DerivedBookForm({'title': title, 'author': self.writer.pk, 'isbn': '12345'})
self.assertFalse(form.is_valid())
self.assertEqual(len(form.errors), 1)
self.assertEqual(form.errors['__all__'], ['Book with this Title and Author already exists.'])
def test_abstract_inherited_unique(self):
title = 'Boss'
isbn = '12345'
dbook = DerivedBook.objects.create(title=title, author=self.writer, isbn=isbn)
form = DerivedBookForm({'title': 'Other', 'author': self.writer.pk, 'isbn': isbn})
self.assertFalse(form.is_valid())
self.assertEqual(len(form.errors), 1)
self.assertEqual(form.errors['isbn'], ['Derived book with this Isbn already exists.'])
def test_abstract_inherited_unique_together(self):
title = 'Boss'
isbn = '12345'
dbook = DerivedBook.objects.create(title=title, author=self.writer, isbn=isbn)
form = DerivedBookForm({
'title': 'Other',
'author': self.writer.pk,
'isbn': '9876',
'suffix1': '0',
'suffix2': '0'
})
self.assertFalse(form.is_valid())
self.assertEqual(len(form.errors), 1)
self.assertEqual(form.errors['__all__'],
['Derived book with this Suffix1 and Suffix2 already exists.'])
def test_explicitpk_unspecified(self):
"""Test for primary_key being in the form and failing validation."""
form = ExplicitPKForm({'key': '', 'desc': '' })
self.assertFalse(form.is_valid())
def test_explicitpk_unique(self):
"""Ensure keys and blank character strings are tested for uniqueness."""
form = ExplicitPKForm({'key': 'key1', 'desc': ''})
self.assertTrue(form.is_valid())
form.save()
form = ExplicitPKForm({'key': 'key1', 'desc': ''})
self.assertFalse(form.is_valid())
self.assertEqual(len(form.errors), 3)
self.assertEqual(form.errors['__all__'], ['Explicit pk with this Key and Desc already exists.'])
self.assertEqual(form.errors['desc'], ['Explicit pk with this Desc already exists.'])
self.assertEqual(form.errors['key'], ['Explicit pk with this Key already exists.'])
def test_unique_for_date(self):
p = Post.objects.create(title="Django 1.0 is released",
slug="Django 1.0", subtitle="Finally", posted=datetime.date(2008, 9, 3))
form = PostForm({'title': "Django 1.0 is released", 'posted': '2008-09-03'})
self.assertFalse(form.is_valid())
self.assertEqual(len(form.errors), 1)
self.assertEqual(form.errors['title'], ['Title must be unique for Posted date.'])
form = PostForm({'title': "Work on Django 1.1 begins", 'posted': '2008-09-03'})
self.assertTrue(form.is_valid())
form = PostForm({'title': "Django 1.0 is released", 'posted': '2008-09-04'})
self.assertTrue(form.is_valid())
form = PostForm({'slug': "Django 1.0", 'posted': '2008-01-01'})
self.assertFalse(form.is_valid())
self.assertEqual(len(form.errors), 1)
self.assertEqual(form.errors['slug'], ['Slug must be unique for Posted year.'])
form = PostForm({'subtitle': "Finally", 'posted': '2008-09-30'})
self.assertFalse(form.is_valid())
self.assertEqual(form.errors['subtitle'], ['Subtitle must be unique for Posted month.'])
form = PostForm({'subtitle': "Finally", "title": "Django 1.0 is released",
"slug": "Django 1.0", 'posted': '2008-09-03'}, instance=p)
self.assertTrue(form.is_valid())
form = PostForm({'title': "Django 1.0 is released"})
self.assertFalse(form.is_valid())
self.assertEqual(len(form.errors), 1)
self.assertEqual(form.errors['posted'], ['This field is required.'])
def test_inherited_unique_for_date(self):
p = Post.objects.create(title="Django 1.0 is released",
slug="Django 1.0", subtitle="Finally", posted=datetime.date(2008, 9, 3))
form = DerivedPostForm({'title': "Django 1.0 is released", 'posted': '2008-09-03'})
self.assertFalse(form.is_valid())
self.assertEqual(len(form.errors), 1)
self.assertEqual(form.errors['title'], ['Title must be unique for Posted date.'])
form = DerivedPostForm({'title': "Work on Django 1.1 begins", 'posted': '2008-09-03'})
self.assertTrue(form.is_valid())
form = DerivedPostForm({'title': "Django 1.0 is released", 'posted': '2008-09-04'})
self.assertTrue(form.is_valid())
form = DerivedPostForm({'slug': "Django 1.0", 'posted': '2008-01-01'})
self.assertFalse(form.is_valid())
self.assertEqual(len(form.errors), 1)
self.assertEqual(form.errors['slug'], ['Slug must be unique for Posted year.'])
form = DerivedPostForm({'subtitle': "Finally", 'posted': '2008-09-30'})
self.assertFalse(form.is_valid())
self.assertEqual(form.errors['subtitle'], ['Subtitle must be unique for Posted month.'])
form = DerivedPostForm({'subtitle': "Finally", "title": "Django 1.0 is released",
"slug": "Django 1.0", 'posted': '2008-09-03'}, instance=p)
self.assertTrue(form.is_valid())
def test_unique_for_date_with_nullable_date(self):
p = FlexibleDatePost.objects.create(title="Django 1.0 is released",
slug="Django 1.0", subtitle="Finally", posted=datetime.date(2008, 9, 3))
form = FlexDatePostForm({'title': "Django 1.0 is released"})
self.assertTrue(form.is_valid())
form = FlexDatePostForm({'slug': "Django 1.0"})
self.assertTrue(form.is_valid())
form = FlexDatePostForm({'subtitle': "Finally"})
self.assertTrue(form.is_valid())
form = FlexDatePostForm({'subtitle': "Finally", "title": "Django 1.0 is released",
"slug": "Django 1.0"}, instance=p)
self.assertTrue(form.is_valid())
class OldFormForXTests(TestCase):
def test_base_form(self):
self.assertEqual(Category.objects.count(), 0)
f = BaseCategoryForm()
self.assertHTMLEqual(
str(f),
"""<tr><th><label for="id_name">Name:</label></th><td><input id="id_name" type="text" name="name" maxlength="20" /></td></tr>
<tr><th><label for="id_slug">Slug:</label></th><td><input id="id_slug" type="text" name="slug" maxlength="20" /></td></tr>
<tr><th><label for="id_url">The URL:</label></th><td><input id="id_url" type="text" name="url" maxlength="40" /></td></tr>"""
)
self.assertHTMLEqual(
str(f.as_ul()),
"""<li><label for="id_name">Name:</label> <input id="id_name" type="text" name="name" maxlength="20" /></li>
<li><label for="id_slug">Slug:</label> <input id="id_slug" type="text" name="slug" maxlength="20" /></li>
<li><label for="id_url">The URL:</label> <input id="id_url" type="text" name="url" maxlength="40" /></li>"""
)
self.assertHTMLEqual(
str(f["name"]),
"""<input id="id_name" type="text" name="name" maxlength="20" />""")
def test_auto_id(self):
f = BaseCategoryForm(auto_id=False)
self.assertHTMLEqual(
str(f.as_ul()),
"""<li>Name: <input type="text" name="name" maxlength="20" /></li>
<li>Slug: <input type="text" name="slug" maxlength="20" /></li>
<li>The URL: <input type="text" name="url" maxlength="40" /></li>"""
)
def test_with_data(self):
self.assertEqual(Category.objects.count(), 0)
f = BaseCategoryForm({'name': 'Entertainment',
'slug': 'entertainment',
'url': 'entertainment'})
self.assertTrue(f.is_valid())
self.assertEqual(f.cleaned_data['name'], 'Entertainment')
self.assertEqual(f.cleaned_data['slug'], 'entertainment')
self.assertEqual(f.cleaned_data['url'], 'entertainment')
c1 = f.save()
# Testing wether the same object is returned from the
# ORM... not the fastest way...
self.assertEqual(c1, Category.objects.all()[0])
self.assertEqual(c1.name, "Entertainment")
self.assertEqual(Category.objects.count(), 1)
f = BaseCategoryForm({'name': "It's a test",
'slug': 'its-test',
'url': 'test'})
self.assertTrue(f.is_valid())
self.assertEqual(f.cleaned_data['name'], "It's a test")
self.assertEqual(f.cleaned_data['slug'], 'its-test')
self.assertEqual(f.cleaned_data['url'], 'test')
c2 = f.save()
# Testing wether the same object is returned from the
# ORM... not the fastest way...
self.assertEqual(c2, Category.objects.get(pk=c2.pk))
self.assertEqual(c2.name, "It's a test")
self.assertEqual(Category.objects.count(), 2)
# If you call save() with commit=False, then it will return an object that
# hasn't yet been saved to the database. In this case, it's up to you to call
# save() on the resulting model instance.
f = BaseCategoryForm({'name': 'Third test', 'slug': 'third-test', 'url': 'third'})
self.assertEqual(f.is_valid(), True)
self.assertEqual(f.cleaned_data['url'], 'third')
self.assertEqual(f.cleaned_data['name'], 'Third test')
self.assertEqual(f.cleaned_data['slug'], 'third-test')
c3 = f.save(commit=False)
self.assertEqual(c3.name, "Third test")
self.assertEqual(Category.objects.count(), 2)
c3.save()
self.assertEqual(Category.objects.count(), 3)
# If you call save() with invalid data, you'll get a ValueError.
f = BaseCategoryForm({'name': '', 'slug': 'not a slug!', 'url': 'foo'})
self.assertEqual(f.errors['name'], ['This field is required.'])
self.assertEqual(f.errors['slug'], ["Enter a valid 'slug' consisting of letters, numbers, underscores or hyphens."])
self.assertEqual(f.cleaned_data, {'url': 'foo'})
with self.assertRaises(ValueError):
f.save()
f = BaseCategoryForm({'name': '', 'slug': '', 'url': 'foo'})
with self.assertRaises(ValueError):
f.save()
# Create a couple of Writers.
w_royko = Writer(name='Mike Royko')
w_royko.save()
w_woodward = Writer(name='Bob Woodward')
w_woodward.save()
# ManyToManyFields are represented by a MultipleChoiceField, ForeignKeys and any
# fields with the 'choices' attribute are represented by a ChoiceField.
f = ArticleForm(auto_id=False)
self.assertHTMLEqual(six.text_type(f), '''<tr><th>Headline:</th><td><input type="text" name="headline" maxlength="50" /></td></tr>
<tr><th>Slug:</th><td><input type="text" name="slug" maxlength="50" /></td></tr>
<tr><th>Pub date:</th><td><input type="text" name="pub_date" /></td></tr>
<tr><th>Writer:</th><td><select name="writer">
<option value="" selected="selected">---------</option>
<option value="%s">Bob Woodward</option>
<option value="%s">Mike Royko</option>
</select></td></tr>
<tr><th>Article:</th><td><textarea rows="10" cols="40" name="article"></textarea></td></tr>
<tr><th>Categories:</th><td><select multiple="multiple" name="categories">
<option value="%s">Entertainment</option>
<option value="%s">It's a test</option>
<option value="%s">Third test</option>
</select><br /><span class="helptext"> Hold down "Control", or "Command" on a Mac, to select more than one.</span></td></tr>
<tr><th>Status:</th><td><select name="status">
<option value="" selected="selected">---------</option>
<option value="1">Draft</option>
<option value="2">Pending</option>
<option value="3">Live</option>
</select></td></tr>''' % (w_woodward.pk, w_royko.pk, c1.pk, c2.pk, c3.pk))
# You can restrict a form to a subset of the complete list of fields
# by providing a 'fields' argument. If you try to save a
# model created with such a form, you need to ensure that the fields
# that are _not_ on the form have default values, or are allowed to have
# a value of None. If a field isn't specified on a form, the object created
# from the form can't provide a value for that field!
f = PartialArticleForm(auto_id=False)
self.assertHTMLEqual(six.text_type(f), '''<tr><th>Headline:</th><td><input type="text" name="headline" maxlength="50" /></td></tr>
<tr><th>Pub date:</th><td><input type="text" name="pub_date" /></td></tr>''')
# When the ModelForm is passed an instance, that instance's current values are
# inserted as 'initial' data in each Field.
w = Writer.objects.get(name='Mike Royko')
f = RoykoForm(auto_id=False, instance=w)
self.assertHTMLEqual(six.text_type(f), '''<tr><th>Name:</th><td><input type="text" name="name" value="Mike Royko" maxlength="50" /><br /><span class="helptext">Use both first and last names.</span></td></tr>''')
art = Article(
headline='Test article',
slug='test-article',
pub_date=datetime.date(1988, 1, 4),
writer=w,
article='Hello.'
)
art.save()
art_id_1 = art.id
self.assertEqual(art_id_1 is not None, True)
f = TestArticleForm(auto_id=False, instance=art)
self.assertHTMLEqual(f.as_ul(), '''<li>Headline: <input type="text" name="headline" value="Test article" maxlength="50" /></li>
<li>Slug: <input type="text" name="slug" value="test-article" maxlength="50" /></li>
<li>Pub date: <input type="text" name="pub_date" value="1988-01-04" /></li>
<li>Writer: <select name="writer">
<option value="">---------</option>
<option value="%s">Bob Woodward</option>
<option value="%s" selected="selected">Mike Royko</option>
</select></li>
<li>Article: <textarea rows="10" cols="40" name="article">Hello.</textarea></li>
<li>Categories: <select multiple="multiple" name="categories">
<option value="%s">Entertainment</option>
<option value="%s">It's a test</option>
<option value="%s">Third test</option>
</select> <span class="helptext"> Hold down "Control", or "Command" on a Mac, to select more than one.</span></li>
<li>Status: <select name="status">
<option value="" selected="selected">---------</option>
<option value="1">Draft</option>
<option value="2">Pending</option>
<option value="3">Live</option>
</select></li>''' % (w_woodward.pk, w_royko.pk, c1.pk, c2.pk, c3.pk))
f = TestArticleForm({
'headline': 'Test headline',
'slug': 'test-headline',
'pub_date': '1984-02-06',
'writer': six.text_type(w_royko.pk),
'article': 'Hello.'
}, instance=art)
self.assertEqual(f.errors, {})
self.assertEqual(f.is_valid(), True)
test_art = f.save()
self.assertEqual(test_art.id == art_id_1, True)
test_art = Article.objects.get(id=art_id_1)
self.assertEqual(test_art.headline, 'Test headline')
# You can create a form over a subset of the available fields
# by specifying a 'fields' argument to form_for_instance.
f = PartialArticleFormWithSlug({
'headline': 'New headline',
'slug': 'new-headline',
'pub_date': '1988-01-04'
}, auto_id=False, instance=art)
self.assertHTMLEqual(f.as_ul(), '''<li>Headline: <input type="text" name="headline" value="New headline" maxlength="50" /></li>
<li>Slug: <input type="text" name="slug" value="new-headline" maxlength="50" /></li>
<li>Pub date: <input type="text" name="pub_date" value="1988-01-04" /></li>''')
self.assertEqual(f.is_valid(), True)
new_art = f.save()
self.assertEqual(new_art.id == art_id_1, True)
new_art = Article.objects.get(id=art_id_1)
self.assertEqual(new_art.headline, 'New headline')
# Add some categories and test the many-to-many form output.
self.assertQuerysetEqual(new_art.categories.all(), [])
new_art.categories.add(Category.objects.get(name='Entertainment'))
self.assertQuerysetEqual(new_art.categories.all(), ["Entertainment"])
f = TestArticleForm(auto_id=False, instance=new_art)
self.assertHTMLEqual(f.as_ul(), '''<li>Headline: <input type="text" name="headline" value="New headline" maxlength="50" /></li>
<li>Slug: <input type="text" name="slug" value="new-headline" maxlength="50" /></li>
<li>Pub date: <input type="text" name="pub_date" value="1988-01-04" /></li>
<li>Writer: <select name="writer">
<option value="">---------</option>
<option value="%s">Bob Woodward</option>
<option value="%s" selected="selected">Mike Royko</option>
</select></li>
<li>Article: <textarea rows="10" cols="40" name="article">Hello.</textarea></li>
<li>Categories: <select multiple="multiple" name="categories">
<option value="%s" selected="selected">Entertainment</option>
<option value="%s">It's a test</option>
<option value="%s">Third test</option>
</select> <span class="helptext"> Hold down "Control", or "Command" on a Mac, to select more than one.</span></li>
<li>Status: <select name="status">
<option value="" selected="selected">---------</option>
<option value="1">Draft</option>
<option value="2">Pending</option>
<option value="3">Live</option>
</select></li>''' % (w_woodward.pk, w_royko.pk, c1.pk, c2.pk, c3.pk))
# Initial values can be provided for model forms
f = TestArticleForm(
auto_id=False,
initial={
'headline': 'Your headline here',
'categories': [str(c1.id), str(c2.id)]
})
self.assertHTMLEqual(f.as_ul(), '''<li>Headline: <input type="text" name="headline" value="Your headline here" maxlength="50" /></li>
<li>Slug: <input type="text" name="slug" maxlength="50" /></li>
<li>Pub date: <input type="text" name="pub_date" /></li>
<li>Writer: <select name="writer">
<option value="" selected="selected">---------</option>
<option value="%s">Bob Woodward</option>
<option value="%s">Mike Royko</option>
</select></li>
<li>Article: <textarea rows="10" cols="40" name="article"></textarea></li>
<li>Categories: <select multiple="multiple" name="categories">
<option value="%s" selected="selected">Entertainment</option>
<option value="%s" selected="selected">It's a test</option>
<option value="%s">Third test</option>
</select> <span class="helptext"> Hold down "Control", or "Command" on a Mac, to select more than one.</span></li>
<li>Status: <select name="status">
<option value="" selected="selected">---------</option>
<option value="1">Draft</option>
<option value="2">Pending</option>
<option value="3">Live</option>
</select></li>''' % (w_woodward.pk, w_royko.pk, c1.pk, c2.pk, c3.pk))
f = TestArticleForm({
'headline': 'New headline',
'slug': 'new-headline',
'pub_date': '1988-01-04',
'writer': six.text_type(w_royko.pk),
'article': 'Hello.',
'categories': [six.text_type(c1.id), six.text_type(c2.id)]
}, instance=new_art)
new_art = f.save()
self.assertEqual(new_art.id == art_id_1, True)
new_art = Article.objects.get(id=art_id_1)
self.assertQuerysetEqual(new_art.categories.order_by('name'),
["Entertainment", "It's a test"])
# Now, submit form data with no categories. This deletes the existing categories.
f = TestArticleForm({'headline': 'New headline', 'slug': 'new-headline', 'pub_date': '1988-01-04',
'writer': six.text_type(w_royko.pk), 'article': 'Hello.'}, instance=new_art)
new_art = f.save()
self.assertEqual(new_art.id == art_id_1, True)
new_art = Article.objects.get(id=art_id_1)
self.assertQuerysetEqual(new_art.categories.all(), [])
# Create a new article, with categories, via the form.
f = ArticleForm({'headline': 'The walrus was Paul', 'slug': 'walrus-was-paul', 'pub_date': '1967-11-01',
'writer': six.text_type(w_royko.pk), 'article': 'Test.', 'categories': [six.text_type(c1.id), six.text_type(c2.id)]})
new_art = f.save()
art_id_2 = new_art.id
self.assertEqual(art_id_2 not in (None, art_id_1), True)
new_art = Article.objects.get(id=art_id_2)
self.assertQuerysetEqual(new_art.categories.order_by('name'), ["Entertainment", "It's a test"])
# Create a new article, with no categories, via the form.
f = ArticleForm({'headline': 'The walrus was Paul', 'slug': 'walrus-was-paul', 'pub_date': '1967-11-01',
'writer': six.text_type(w_royko.pk), 'article': 'Test.'})
new_art = f.save()
art_id_3 = new_art.id
self.assertEqual(art_id_3 not in (None, art_id_1, art_id_2), True)
new_art = Article.objects.get(id=art_id_3)
self.assertQuerysetEqual(new_art.categories.all(), [])
# Create a new article, with categories, via the form, but use commit=False.
# The m2m data won't be saved until save_m2m() is invoked on the form.
f = ArticleForm({'headline': 'The walrus was Paul', 'slug': 'walrus-was-paul', 'pub_date': '1967-11-01',
'writer': six.text_type(w_royko.pk), 'article': 'Test.', 'categories': [six.text_type(c1.id), six.text_type(c2.id)]})
new_art = f.save(commit=False)
# Manually save the instance
new_art.save()
art_id_4 = new_art.id
self.assertEqual(art_id_4 not in (None, art_id_1, art_id_2, art_id_3), True)
# The instance doesn't have m2m data yet
new_art = Article.objects.get(id=art_id_4)
self.assertQuerysetEqual(new_art.categories.all(), [])
# Save the m2m data on the form
f.save_m2m()
self.assertQuerysetEqual(new_art.categories.order_by('name'), ["Entertainment", "It's a test"])
# Here, we define a custom ModelForm. Because it happens to have the same fields as
# the Category model, we can just call the form's save() to apply its changes to an
# existing Category instance.
cat = Category.objects.get(name='Third test')
self.assertEqual(cat.name, "Third test")
self.assertEqual(cat.id == c3.id, True)
form = ShortCategory({'name': 'Third', 'slug': 'third', 'url': '3rd'}, instance=cat)
self.assertEqual(form.save().name, 'Third')
self.assertEqual(Category.objects.get(id=c3.id).name, 'Third')
# Here, we demonstrate that choices for a ForeignKey ChoiceField are determined
# at runtime, based on the data in the database when the form is displayed, not
# the data in the database when the form is instantiated.
f = ArticleForm(auto_id=False)
self.assertHTMLEqual(f.as_ul(), '''<li>Headline: <input type="text" name="headline" maxlength="50" /></li>
<li>Slug: <input type="text" name="slug" maxlength="50" /></li>
<li>Pub date: <input type="text" name="pub_date" /></li>
<li>Writer: <select name="writer">
<option value="" selected="selected">---------</option>
<option value="%s">Bob Woodward</option>
<option value="%s">Mike Royko</option>
</select></li>
<li>Article: <textarea rows="10" cols="40" name="article"></textarea></li>
<li>Categories: <select multiple="multiple" name="categories">
<option value="%s">Entertainment</option>
<option value="%s">It's a test</option>
<option value="%s">Third</option>
</select> <span class="helptext"> Hold down "Control", or "Command" on a Mac, to select more than one.</span></li>
<li>Status: <select name="status">
<option value="" selected="selected">---------</option>
<option value="1">Draft</option>
<option value="2">Pending</option>
<option value="3">Live</option>
</select></li>''' % (w_woodward.pk, w_royko.pk, c1.pk, c2.pk, c3.pk))
c4 = Category.objects.create(name='Fourth', url='4th')
self.assertEqual(c4.name, 'Fourth')
w_bernstein = Writer.objects.create(name='Carl Bernstein')
self.assertEqual(w_bernstein.name, 'Carl Bernstein')
self.assertHTMLEqual(f.as_ul(), '''<li>Headline: <input type="text" name="headline" maxlength="50" /></li>
<li>Slug: <input type="text" name="slug" maxlength="50" /></li>
<li>Pub date: <input type="text" name="pub_date" /></li>
<li>Writer: <select name="writer">
<option value="" selected="selected">---------</option>
<option value="%s">Bob Woodward</option>
<option value="%s">Carl Bernstein</option>
<option value="%s">Mike Royko</option>
</select></li>
<li>Article: <textarea rows="10" cols="40" name="article"></textarea></li>
<li>Categories: <select multiple="multiple" name="categories">
<option value="%s">Entertainment</option>
<option value="%s">It's a test</option>
<option value="%s">Third</option>
<option value="%s">Fourth</option>
</select> <span class="helptext"> Hold down "Control", or "Command" on a Mac, to select more than one.</span></li>
<li>Status: <select name="status">
<option value="" selected="selected">---------</option>
<option value="1">Draft</option>
<option value="2">Pending</option>
<option value="3">Live</option>
</select></li>''' % (w_woodward.pk, w_bernstein.pk, w_royko.pk, c1.pk, c2.pk, c3.pk, c4.pk))
# ModelChoiceField ############################################################
f = forms.ModelChoiceField(Category.objects.all())
self.assertEqual(list(f.choices), [
('', '---------'),
(c1.pk, 'Entertainment'),
(c2.pk, "It's a test"),
(c3.pk, 'Third'),
(c4.pk, 'Fourth')])
with self.assertRaises(ValidationError):
f.clean('')
with self.assertRaises(ValidationError):
f.clean(None)
with self.assertRaises(ValidationError):
f.clean(0)
self.assertEqual(f.clean(c3.id).name, 'Third')
self.assertEqual(f.clean(c2.id).name, "It's a test")
# Add a Category object *after* the ModelChoiceField has already been
# instantiated. This proves clean() checks the database during clean() rather
# than caching it at time of instantiation.
c5 = Category.objects.create(name='Fifth', url='5th')
self.assertEqual(c5.name, 'Fifth')
self.assertEqual(f.clean(c5.id).name, 'Fifth')
# Delete a Category object *after* the ModelChoiceField has already been
# instantiated. This proves clean() checks the database during clean() rather
# than caching it at time of instantiation.
Category.objects.get(url='5th').delete()
with self.assertRaises(ValidationError):
f.clean(c5.id)
f = forms.ModelChoiceField(Category.objects.filter(pk=c1.id), required=False)
self.assertEqual(f.clean(''), None)
f.clean('')
self.assertEqual(f.clean(str(c1.id)).name, "Entertainment")
with self.assertRaises(ValidationError):
f.clean('100')
# queryset can be changed after the field is created.
f.queryset = Category.objects.exclude(name='Fourth')
self.assertEqual(list(f.choices), [
('', '---------'),
(c1.pk, 'Entertainment'),
(c2.pk, "It's a test"),
(c3.pk, 'Third')])
self.assertEqual(f.clean(c3.id).name, 'Third')
with self.assertRaises(ValidationError):
f.clean(c4.id)
# check that we can safely iterate choices repeatedly
gen_one = list(f.choices)
gen_two = f.choices
self.assertEqual(gen_one[2], (c2.pk, "It's a test"))
self.assertEqual(list(gen_two), [
('', '---------'),
(c1.pk, 'Entertainment'),
(c2.pk, "It's a test"),
(c3.pk, 'Third')])
# check that we can override the label_from_instance method to print custom labels (#4620)
f.queryset = Category.objects.all()
f.label_from_instance = lambda obj: "category " + str(obj)
self.assertEqual(list(f.choices), [
('', '---------'),
(c1.pk, 'category Entertainment'),
(c2.pk, "category It's a test"),
(c3.pk, 'category Third'),
(c4.pk, 'category Fourth')])
# ModelMultipleChoiceField ####################################################
f = forms.ModelMultipleChoiceField(Category.objects.all())