1572 lines
51 KiB
Python
1572 lines
51 KiB
Python
"""
|
|
XX. Generating HTML forms from models
|
|
|
|
This is mostly just a reworking of the ``form_for_model``/``form_for_instance``
|
|
tests to use ``ModelForm``. As such, the text may not make sense in all cases,
|
|
and the examples are probably a poor fit for the ``ModelForm`` syntax. In other
|
|
words, most of these tests should be rewritten.
|
|
"""
|
|
|
|
import os
|
|
import tempfile
|
|
|
|
from django.db import models
|
|
from django.core.files.storage import FileSystemStorage
|
|
|
|
temp_storage_dir = tempfile.mkdtemp()
|
|
temp_storage = FileSystemStorage(temp_storage_dir)
|
|
|
|
ARTICLE_STATUS = (
|
|
(1, 'Draft'),
|
|
(2, 'Pending'),
|
|
(3, 'Live'),
|
|
)
|
|
|
|
ARTICLE_STATUS_CHAR = (
|
|
('d', 'Draft'),
|
|
('p', 'Pending'),
|
|
('l', 'Live'),
|
|
)
|
|
|
|
class Category(models.Model):
|
|
name = models.CharField(max_length=20)
|
|
slug = models.SlugField(max_length=20)
|
|
url = models.CharField('The URL', max_length=40)
|
|
|
|
def __unicode__(self):
|
|
return self.name
|
|
|
|
class Writer(models.Model):
|
|
name = models.CharField(max_length=50, help_text='Use both first and last names.')
|
|
|
|
def __unicode__(self):
|
|
return self.name
|
|
|
|
class Article(models.Model):
|
|
headline = models.CharField(max_length=50)
|
|
slug = models.SlugField()
|
|
pub_date = models.DateField()
|
|
created = models.DateField(editable=False)
|
|
writer = models.ForeignKey(Writer)
|
|
article = models.TextField()
|
|
categories = models.ManyToManyField(Category, blank=True)
|
|
status = models.PositiveIntegerField(choices=ARTICLE_STATUS, blank=True, null=True)
|
|
|
|
def save(self):
|
|
import datetime
|
|
if not self.id:
|
|
self.created = datetime.date.today()
|
|
return super(Article, self).save()
|
|
|
|
def __unicode__(self):
|
|
return self.headline
|
|
|
|
class ImprovedArticle(models.Model):
|
|
article = models.OneToOneField(Article)
|
|
|
|
class ImprovedArticleWithParentLink(models.Model):
|
|
article = models.OneToOneField(Article, parent_link=True)
|
|
|
|
class BetterWriter(Writer):
|
|
pass
|
|
|
|
class WriterProfile(models.Model):
|
|
writer = models.OneToOneField(Writer, primary_key=True)
|
|
age = models.PositiveIntegerField()
|
|
|
|
def __unicode__(self):
|
|
return "%s is %s" % (self.writer, self.age)
|
|
|
|
from django.contrib.localflavor.us.models import PhoneNumberField
|
|
class PhoneNumber(models.Model):
|
|
phone = PhoneNumberField()
|
|
description = models.CharField(max_length=20)
|
|
|
|
def __unicode__(self):
|
|
return self.phone
|
|
|
|
class TextFile(models.Model):
|
|
description = models.CharField(max_length=20)
|
|
file = models.FileField(storage=temp_storage, upload_to='tests', max_length=15)
|
|
|
|
def __unicode__(self):
|
|
return self.description
|
|
|
|
try:
|
|
# If PIL is available, try testing ImageFields.
|
|
# Checking for the existence of Image is enough for CPython, but
|
|
# for PyPy, you need to check for the underlying modules
|
|
# If PIL is not available, ImageField tests are omitted.
|
|
from PIL import Image, _imaging
|
|
test_images = True
|
|
|
|
class ImageFile(models.Model):
|
|
def custom_upload_path(self, filename):
|
|
path = self.path or 'tests'
|
|
return '%s/%s' % (path, filename)
|
|
|
|
description = models.CharField(max_length=20)
|
|
|
|
# Deliberately put the image field *after* the width/height fields to
|
|
# trigger the bug in #10404 with width/height not getting assigned.
|
|
width = models.IntegerField(editable=False)
|
|
height = models.IntegerField(editable=False)
|
|
image = models.ImageField(storage=temp_storage, upload_to=custom_upload_path,
|
|
width_field='width', height_field='height')
|
|
path = models.CharField(max_length=16, blank=True, default='')
|
|
|
|
def __unicode__(self):
|
|
return self.description
|
|
|
|
class OptionalImageFile(models.Model):
|
|
def custom_upload_path(self, filename):
|
|
path = self.path or 'tests'
|
|
return '%s/%s' % (path, filename)
|
|
|
|
description = models.CharField(max_length=20)
|
|
image = models.ImageField(storage=temp_storage, upload_to=custom_upload_path,
|
|
width_field='width', height_field='height',
|
|
blank=True, null=True)
|
|
width = models.IntegerField(editable=False, null=True)
|
|
height = models.IntegerField(editable=False, null=True)
|
|
path = models.CharField(max_length=16, blank=True, default='')
|
|
|
|
def __unicode__(self):
|
|
return self.description
|
|
except ImportError:
|
|
test_images = False
|
|
|
|
class CommaSeparatedInteger(models.Model):
|
|
field = models.CommaSeparatedIntegerField(max_length=20)
|
|
|
|
def __unicode__(self):
|
|
return self.field
|
|
|
|
class Product(models.Model):
|
|
slug = models.SlugField(unique=True)
|
|
|
|
def __unicode__(self):
|
|
return self.slug
|
|
|
|
class Price(models.Model):
|
|
price = models.DecimalField(max_digits=10, decimal_places=2)
|
|
quantity = models.PositiveIntegerField()
|
|
|
|
def __unicode__(self):
|
|
return u"%s for %s" % (self.quantity, self.price)
|
|
|
|
class Meta:
|
|
unique_together = (('price', 'quantity'),)
|
|
|
|
class ArticleStatus(models.Model):
|
|
status = models.CharField(max_length=2, choices=ARTICLE_STATUS_CHAR, blank=True, null=True)
|
|
|
|
class Inventory(models.Model):
|
|
barcode = models.PositiveIntegerField(unique=True)
|
|
parent = models.ForeignKey('self', to_field='barcode', blank=True, null=True)
|
|
name = models.CharField(blank=False, max_length=20)
|
|
|
|
def __unicode__(self):
|
|
return self.name
|
|
|
|
class Book(models.Model):
|
|
title = models.CharField(max_length=40)
|
|
author = models.ForeignKey(Writer, blank=True, null=True)
|
|
special_id = models.IntegerField(blank=True, null=True, unique=True)
|
|
|
|
class Meta:
|
|
unique_together = ('title', 'author')
|
|
|
|
class ExplicitPK(models.Model):
|
|
key = models.CharField(max_length=20, primary_key=True)
|
|
desc = models.CharField(max_length=20, blank=True, unique=True)
|
|
class Meta:
|
|
unique_together = ('key', 'desc')
|
|
|
|
def __unicode__(self):
|
|
return self.key
|
|
|
|
class Post(models.Model):
|
|
title = models.CharField(max_length=50, unique_for_date='posted', blank=True)
|
|
slug = models.CharField(max_length=50, unique_for_year='posted', blank=True)
|
|
subtitle = models.CharField(max_length=50, unique_for_month='posted', blank=True)
|
|
posted = models.DateField()
|
|
|
|
def __unicode__(self):
|
|
return self.name
|
|
|
|
class BigInt(models.Model):
|
|
biggie = models.BigIntegerField()
|
|
|
|
def __unicode__(self):
|
|
return unicode(self.biggie)
|
|
|
|
__test__ = {'API_TESTS': """
|
|
>>> from django import forms
|
|
>>> from django.forms.models import ModelForm, model_to_dict
|
|
>>> from django.core.files.uploadedfile import SimpleUploadedFile
|
|
|
|
The bare bones, absolutely nothing custom, basic case.
|
|
|
|
>>> class CategoryForm(ModelForm):
|
|
... class Meta:
|
|
... model = Category
|
|
>>> CategoryForm.base_fields.keys()
|
|
['name', 'slug', 'url']
|
|
|
|
|
|
Extra fields.
|
|
|
|
>>> class CategoryForm(ModelForm):
|
|
... some_extra_field = forms.BooleanField()
|
|
...
|
|
... class Meta:
|
|
... model = Category
|
|
|
|
>>> CategoryForm.base_fields.keys()
|
|
['name', 'slug', 'url', 'some_extra_field']
|
|
|
|
Extra field that has a name collision with a related object accessor.
|
|
|
|
>>> class WriterForm(ModelForm):
|
|
... book = forms.CharField(required=False)
|
|
...
|
|
... class Meta:
|
|
... model = Writer
|
|
|
|
>>> wf = WriterForm({'name': 'Richard Lockridge'})
|
|
>>> wf.is_valid()
|
|
True
|
|
|
|
Replacing a field.
|
|
|
|
>>> class CategoryForm(ModelForm):
|
|
... url = forms.BooleanField()
|
|
...
|
|
... class Meta:
|
|
... model = Category
|
|
|
|
>>> CategoryForm.base_fields['url'].__class__
|
|
<class 'django.forms.fields.BooleanField'>
|
|
|
|
|
|
Using 'fields'.
|
|
|
|
>>> class CategoryForm(ModelForm):
|
|
...
|
|
... class Meta:
|
|
... model = Category
|
|
... fields = ['url']
|
|
|
|
>>> CategoryForm.base_fields.keys()
|
|
['url']
|
|
|
|
|
|
Using 'exclude'
|
|
|
|
>>> class CategoryForm(ModelForm):
|
|
...
|
|
... class Meta:
|
|
... model = Category
|
|
... exclude = ['url']
|
|
|
|
>>> CategoryForm.base_fields.keys()
|
|
['name', 'slug']
|
|
|
|
|
|
Using 'fields' *and* 'exclude'. Not sure why you'd want to do this, but uh,
|
|
"be liberal in what you accept" and all.
|
|
|
|
>>> class CategoryForm(ModelForm):
|
|
...
|
|
... class Meta:
|
|
... model = Category
|
|
... fields = ['name', 'url']
|
|
... exclude = ['url']
|
|
|
|
>>> CategoryForm.base_fields.keys()
|
|
['name']
|
|
|
|
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 CategoryForm(ModelForm):
|
|
... class Meta:
|
|
... model = Category
|
|
|
|
>>> class OddForm(CategoryForm):
|
|
... class Meta:
|
|
... model = Article
|
|
|
|
OddForm is now an Article-related thing, because BadForm.Meta overrides
|
|
CategoryForm.Meta.
|
|
>>> OddForm.base_fields.keys()
|
|
['headline', 'slug', 'pub_date', 'writer', 'article', 'status', 'categories']
|
|
|
|
>>> class ArticleForm(ModelForm):
|
|
... class Meta:
|
|
... model = Article
|
|
|
|
First class with a Meta class wins.
|
|
|
|
>>> class BadForm(ArticleForm, CategoryForm):
|
|
... pass
|
|
>>> OddForm.base_fields.keys()
|
|
['headline', 'slug', 'pub_date', 'writer', 'article', 'status', 'categories']
|
|
|
|
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).
|
|
|
|
>>> class CategoryForm(ModelForm):
|
|
... class Meta:
|
|
... model = Category
|
|
>>> class SubCategoryForm(CategoryForm):
|
|
... pass
|
|
>>> SubCategoryForm.base_fields.keys()
|
|
['name', 'slug', 'url']
|
|
|
|
We can also subclass the Meta inner class to change the fields list.
|
|
|
|
>>> class CategoryForm(ModelForm):
|
|
... checkbox = forms.BooleanField()
|
|
...
|
|
... class Meta:
|
|
... model = Category
|
|
>>> class SubCategoryForm(CategoryForm):
|
|
... class Meta(CategoryForm.Meta):
|
|
... exclude = ['url']
|
|
|
|
>>> print SubCategoryForm()
|
|
<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>
|
|
|
|
# test using fields to provide ordering to the fields
|
|
>>> class CategoryForm(ModelForm):
|
|
... class Meta:
|
|
... model = Category
|
|
... fields = ['url', 'name']
|
|
|
|
>>> CategoryForm.base_fields.keys()
|
|
['url', 'name']
|
|
|
|
|
|
>>> print CategoryForm()
|
|
<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>
|
|
|
|
>>> class CategoryForm(ModelForm):
|
|
... class Meta:
|
|
... model = Category
|
|
... fields = ['slug', 'url', 'name']
|
|
... exclude = ['url']
|
|
|
|
>>> CategoryForm.base_fields.keys()
|
|
['slug', 'name']
|
|
|
|
# Old form_for_x tests #######################################################
|
|
|
|
>>> from django.forms import ModelForm, CharField
|
|
>>> import datetime
|
|
|
|
>>> Category.objects.all()
|
|
[]
|
|
|
|
>>> class CategoryForm(ModelForm):
|
|
... class Meta:
|
|
... model = Category
|
|
>>> f = CategoryForm()
|
|
>>> print 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>
|
|
>>> print 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>
|
|
>>> print f['name']
|
|
<input id="id_name" type="text" name="name" maxlength="20" />
|
|
|
|
>>> f = CategoryForm(auto_id=False)
|
|
>>> print 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>
|
|
|
|
>>> f = CategoryForm({'name': 'Entertainment', 'slug': 'entertainment', 'url': 'entertainment'})
|
|
>>> f.is_valid()
|
|
True
|
|
>>> f.cleaned_data['url']
|
|
u'entertainment'
|
|
>>> f.cleaned_data['name']
|
|
u'Entertainment'
|
|
>>> f.cleaned_data['slug']
|
|
u'entertainment'
|
|
>>> obj = f.save()
|
|
>>> obj
|
|
<Category: Entertainment>
|
|
>>> Category.objects.all()
|
|
[<Category: Entertainment>]
|
|
|
|
>>> f = CategoryForm({'name': "It's a test", 'slug': 'its-test', 'url': 'test'})
|
|
>>> f.is_valid()
|
|
True
|
|
>>> f.cleaned_data['url']
|
|
u'test'
|
|
>>> f.cleaned_data['name']
|
|
u"It's a test"
|
|
>>> f.cleaned_data['slug']
|
|
u'its-test'
|
|
>>> obj = f.save()
|
|
>>> obj
|
|
<Category: It's a test>
|
|
>>> Category.objects.order_by('name')
|
|
[<Category: Entertainment>, <Category: It's a test>]
|
|
|
|
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 = CategoryForm({'name': 'Third test', 'slug': 'third-test', 'url': 'third'})
|
|
>>> f.is_valid()
|
|
True
|
|
>>> f.cleaned_data['url']
|
|
u'third'
|
|
>>> f.cleaned_data['name']
|
|
u'Third test'
|
|
>>> f.cleaned_data['slug']
|
|
u'third-test'
|
|
>>> obj = f.save(commit=False)
|
|
>>> obj
|
|
<Category: Third test>
|
|
>>> Category.objects.order_by('name')
|
|
[<Category: Entertainment>, <Category: It's a test>]
|
|
>>> obj.save()
|
|
>>> Category.objects.order_by('name')
|
|
[<Category: Entertainment>, <Category: It's a test>, <Category: Third test>]
|
|
|
|
If you call save() with invalid data, you'll get a ValueError.
|
|
>>> f = CategoryForm({'name': '', 'slug': 'not a slug!', 'url': 'foo'})
|
|
>>> f.errors['name']
|
|
[u'This field is required.']
|
|
>>> f.errors['slug']
|
|
[u"Enter a valid 'slug' consisting of letters, numbers, underscores or hyphens."]
|
|
>>> f.cleaned_data
|
|
Traceback (most recent call last):
|
|
...
|
|
AttributeError: 'CategoryForm' object has no attribute 'cleaned_data'
|
|
>>> f.save()
|
|
Traceback (most recent call last):
|
|
...
|
|
ValueError: The Category could not be created because the data didn't validate.
|
|
>>> f = CategoryForm({'name': '', 'slug': '', 'url': 'foo'})
|
|
>>> f.save()
|
|
Traceback (most recent call last):
|
|
...
|
|
ValueError: The Category could not be created because the data didn't validate.
|
|
|
|
Create a couple of Writers.
|
|
>>> w = Writer(name='Mike Royko')
|
|
>>> w.save()
|
|
>>> w = Writer(name='Bob Woodward')
|
|
>>> w.save()
|
|
|
|
ManyToManyFields are represented by a MultipleChoiceField, ForeignKeys and any
|
|
fields with the 'choices' attribute are represented by a ChoiceField.
|
|
>>> class ArticleForm(ModelForm):
|
|
... class Meta:
|
|
... model = Article
|
|
>>> f = ArticleForm(auto_id=False)
|
|
>>> print 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="1">Mike Royko</option>
|
|
<option value="2">Bob Woodward</option>
|
|
</select></td></tr>
|
|
<tr><th>Article:</th><td><textarea rows="10" cols="40" name="article"></textarea></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>
|
|
<tr><th>Categories:</th><td><select multiple="multiple" name="categories">
|
|
<option value="1">Entertainment</option>
|
|
<option value="2">It's a test</option>
|
|
<option value="3">Third test</option>
|
|
</select><br /> Hold down "Control", or "Command" on a Mac, to select more than one.</td></tr>
|
|
|
|
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!
|
|
>>> class PartialArticleForm(ModelForm):
|
|
... class Meta:
|
|
... model = Article
|
|
... fields = ('headline','pub_date')
|
|
>>> f = PartialArticleForm(auto_id=False)
|
|
>>> print 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')
|
|
>>> class RoykoForm(ModelForm):
|
|
... class Meta:
|
|
... model = Writer
|
|
>>> f = RoykoForm(auto_id=False, instance=w)
|
|
>>> print f
|
|
<tr><th>Name:</th><td><input type="text" name="name" value="Mike Royko" maxlength="50" /><br />Use both first and last names.</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
|
|
>>> class TestArticleForm(ModelForm):
|
|
... class Meta:
|
|
... model = Article
|
|
>>> f = TestArticleForm(auto_id=False, instance=art)
|
|
>>> print 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="1" selected="selected">Mike Royko</option>
|
|
<option value="2">Bob Woodward</option>
|
|
</select></li>
|
|
<li>Article: <textarea rows="10" cols="40" name="article">Hello.</textarea></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>
|
|
<li>Categories: <select multiple="multiple" name="categories">
|
|
<option value="1">Entertainment</option>
|
|
<option value="2">It's a test</option>
|
|
<option value="3">Third test</option>
|
|
</select> Hold down "Control", or "Command" on a Mac, to select more than one.</li>
|
|
>>> f = TestArticleForm({'headline': u'Test headline', 'slug': 'test-headline', 'pub_date': u'1984-02-06', 'writer': u'1', 'article': 'Hello.'}, instance=art)
|
|
>>> f.is_valid()
|
|
True
|
|
>>> test_art = f.save()
|
|
>>> test_art.id
|
|
1
|
|
>>> test_art = Article.objects.get(id=1)
|
|
>>> test_art.headline
|
|
u'Test headline'
|
|
|
|
You can create a form over a subset of the available fields
|
|
by specifying a 'fields' argument to form_for_instance.
|
|
>>> class PartialArticleForm(ModelForm):
|
|
... class Meta:
|
|
... model = Article
|
|
... fields=('headline', 'slug', 'pub_date')
|
|
>>> f = PartialArticleForm({'headline': u'New headline', 'slug': 'new-headline', 'pub_date': u'1988-01-04'}, auto_id=False, instance=art)
|
|
>>> print 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>
|
|
>>> f.is_valid()
|
|
True
|
|
>>> new_art = f.save()
|
|
>>> new_art.id
|
|
1
|
|
>>> new_art = Article.objects.get(id=1)
|
|
>>> new_art.headline
|
|
u'New headline'
|
|
|
|
Add some categories and test the many-to-many form output.
|
|
>>> new_art.categories.all()
|
|
[]
|
|
>>> new_art.categories.add(Category.objects.get(name='Entertainment'))
|
|
>>> new_art.categories.all()
|
|
[<Category: Entertainment>]
|
|
>>> class TestArticleForm(ModelForm):
|
|
... class Meta:
|
|
... model = Article
|
|
>>> f = TestArticleForm(auto_id=False, instance=new_art)
|
|
>>> print 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="1" selected="selected">Mike Royko</option>
|
|
<option value="2">Bob Woodward</option>
|
|
</select></li>
|
|
<li>Article: <textarea rows="10" cols="40" name="article">Hello.</textarea></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>
|
|
<li>Categories: <select multiple="multiple" name="categories">
|
|
<option value="1" selected="selected">Entertainment</option>
|
|
<option value="2">It's a test</option>
|
|
<option value="3">Third test</option>
|
|
</select> Hold down "Control", or "Command" on a Mac, to select more than one.</li>
|
|
|
|
Initial values can be provided for model forms
|
|
>>> f = TestArticleForm(auto_id=False, initial={'headline': 'Your headline here', 'categories': ['1','2']})
|
|
>>> print 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="1">Mike Royko</option>
|
|
<option value="2">Bob Woodward</option>
|
|
</select></li>
|
|
<li>Article: <textarea rows="10" cols="40" name="article"></textarea></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>
|
|
<li>Categories: <select multiple="multiple" name="categories">
|
|
<option value="1" selected="selected">Entertainment</option>
|
|
<option value="2" selected="selected">It's a test</option>
|
|
<option value="3">Third test</option>
|
|
</select> Hold down "Control", or "Command" on a Mac, to select more than one.</li>
|
|
|
|
>>> f = TestArticleForm({'headline': u'New headline', 'slug': u'new-headline', 'pub_date': u'1988-01-04',
|
|
... 'writer': u'1', 'article': u'Hello.', 'categories': [u'1', u'2']}, instance=new_art)
|
|
>>> new_art = f.save()
|
|
>>> new_art.id
|
|
1
|
|
>>> new_art = Article.objects.get(id=1)
|
|
>>> new_art.categories.order_by('name')
|
|
[<Category: Entertainment>, <Category: It's a test>]
|
|
|
|
Now, submit form data with no categories. This deletes the existing categories.
|
|
>>> f = TestArticleForm({'headline': u'New headline', 'slug': u'new-headline', 'pub_date': u'1988-01-04',
|
|
... 'writer': u'1', 'article': u'Hello.'}, instance=new_art)
|
|
>>> new_art = f.save()
|
|
>>> new_art.id
|
|
1
|
|
>>> new_art = Article.objects.get(id=1)
|
|
>>> new_art.categories.all()
|
|
[]
|
|
|
|
Create a new article, with categories, via the form.
|
|
>>> class ArticleForm(ModelForm):
|
|
... class Meta:
|
|
... model = Article
|
|
>>> f = ArticleForm({'headline': u'The walrus was Paul', 'slug': u'walrus-was-paul', 'pub_date': u'1967-11-01',
|
|
... 'writer': u'1', 'article': u'Test.', 'categories': [u'1', u'2']})
|
|
>>> new_art = f.save()
|
|
>>> new_art.id
|
|
2
|
|
>>> new_art = Article.objects.get(id=2)
|
|
>>> new_art.categories.order_by('name')
|
|
[<Category: Entertainment>, <Category: It's a test>]
|
|
|
|
Create a new article, with no categories, via the form.
|
|
>>> class ArticleForm(ModelForm):
|
|
... class Meta:
|
|
... model = Article
|
|
>>> f = ArticleForm({'headline': u'The walrus was Paul', 'slug': u'walrus-was-paul', 'pub_date': u'1967-11-01',
|
|
... 'writer': u'1', 'article': u'Test.'})
|
|
>>> new_art = f.save()
|
|
>>> new_art.id
|
|
3
|
|
>>> new_art = Article.objects.get(id=3)
|
|
>>> 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.
|
|
>>> class ArticleForm(ModelForm):
|
|
... class Meta:
|
|
... model = Article
|
|
>>> f = ArticleForm({'headline': u'The walrus was Paul', 'slug': 'walrus-was-paul', 'pub_date': u'1967-11-01',
|
|
... 'writer': u'1', 'article': u'Test.', 'categories': [u'1', u'2']})
|
|
>>> new_art = f.save(commit=False)
|
|
|
|
# Manually save the instance
|
|
>>> new_art.save()
|
|
>>> new_art.id
|
|
4
|
|
|
|
# The instance doesn't have m2m data yet
|
|
>>> new_art = Article.objects.get(id=4)
|
|
>>> new_art.categories.all()
|
|
[]
|
|
|
|
# Save the m2m data on the form
|
|
>>> f.save_m2m()
|
|
>>> new_art.categories.order_by('name')
|
|
[<Category: Entertainment>, <Category: 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.
|
|
>>> class ShortCategory(ModelForm):
|
|
... name = CharField(max_length=5)
|
|
... slug = CharField(max_length=5)
|
|
... url = CharField(max_length=3)
|
|
>>> cat = Category.objects.get(name='Third test')
|
|
>>> cat
|
|
<Category: Third test>
|
|
>>> cat.id
|
|
3
|
|
>>> form = ShortCategory({'name': 'Third', 'slug': 'third', 'url': '3rd'}, instance=cat)
|
|
>>> form.save()
|
|
<Category: Third>
|
|
>>> Category.objects.get(id=3)
|
|
<Category: 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.
|
|
>>> class ArticleForm(ModelForm):
|
|
... class Meta:
|
|
... model = Article
|
|
>>> f = ArticleForm(auto_id=False)
|
|
>>> print 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="1">Mike Royko</option>
|
|
<option value="2">Bob Woodward</option>
|
|
</select></li>
|
|
<li>Article: <textarea rows="10" cols="40" name="article"></textarea></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>
|
|
<li>Categories: <select multiple="multiple" name="categories">
|
|
<option value="1">Entertainment</option>
|
|
<option value="2">It's a test</option>
|
|
<option value="3">Third</option>
|
|
</select> Hold down "Control", or "Command" on a Mac, to select more than one.</li>
|
|
>>> Category.objects.create(name='Fourth', url='4th')
|
|
<Category: Fourth>
|
|
>>> Writer.objects.create(name='Carl Bernstein')
|
|
<Writer: Carl Bernstein>
|
|
>>> print 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="1">Mike Royko</option>
|
|
<option value="2">Bob Woodward</option>
|
|
<option value="3">Carl Bernstein</option>
|
|
</select></li>
|
|
<li>Article: <textarea rows="10" cols="40" name="article"></textarea></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>
|
|
<li>Categories: <select multiple="multiple" name="categories">
|
|
<option value="1">Entertainment</option>
|
|
<option value="2">It's a test</option>
|
|
<option value="3">Third</option>
|
|
<option value="4">Fourth</option>
|
|
</select> Hold down "Control", or "Command" on a Mac, to select more than one.</li>
|
|
|
|
# ModelChoiceField ############################################################
|
|
|
|
>>> from django.forms import ModelChoiceField, ModelMultipleChoiceField
|
|
|
|
>>> f = ModelChoiceField(Category.objects.all())
|
|
>>> list(f.choices)
|
|
[(u'', u'---------'), (1, u'Entertainment'), (2, u"It's a test"), (3, u'Third'), (4, u'Fourth')]
|
|
>>> f.clean('')
|
|
Traceback (most recent call last):
|
|
...
|
|
ValidationError: [u'This field is required.']
|
|
>>> f.clean(None)
|
|
Traceback (most recent call last):
|
|
...
|
|
ValidationError: [u'This field is required.']
|
|
>>> f.clean(0)
|
|
Traceback (most recent call last):
|
|
...
|
|
ValidationError: [u'Select a valid choice. That choice is not one of the available choices.']
|
|
>>> f.clean(3)
|
|
<Category: Third>
|
|
>>> f.clean(2)
|
|
<Category: 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.
|
|
>>> Category.objects.create(name='Fifth', url='5th')
|
|
<Category: Fifth>
|
|
>>> f.clean(5)
|
|
<Category: 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()
|
|
>>> f.clean(5)
|
|
Traceback (most recent call last):
|
|
...
|
|
ValidationError: [u'Select a valid choice. That choice is not one of the available choices.']
|
|
|
|
>>> f = ModelChoiceField(Category.objects.filter(pk=1), required=False)
|
|
>>> print f.clean('')
|
|
None
|
|
>>> f.clean('')
|
|
>>> f.clean('1')
|
|
<Category: Entertainment>
|
|
>>> f.clean('100')
|
|
Traceback (most recent call last):
|
|
...
|
|
ValidationError: [u'Select a valid choice. That choice is not one of the available choices.']
|
|
|
|
# queryset can be changed after the field is created.
|
|
>>> f.queryset = Category.objects.exclude(name='Fourth')
|
|
>>> list(f.choices)
|
|
[(u'', u'---------'), (1, u'Entertainment'), (2, u"It's a test"), (3, u'Third')]
|
|
>>> f.clean(3)
|
|
<Category: Third>
|
|
>>> f.clean(4)
|
|
Traceback (most recent call last):
|
|
...
|
|
ValidationError: [u'Select a valid choice. That choice is not one of the available choices.']
|
|
|
|
# check that we can safely iterate choices repeatedly
|
|
>>> gen_one = list(f.choices)
|
|
>>> gen_two = f.choices
|
|
>>> gen_one[2]
|
|
(2L, u"It's a test")
|
|
>>> list(gen_two)
|
|
[(u'', u'---------'), (1L, u'Entertainment'), (2L, u"It's a test"), (3L, u'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)
|
|
>>> list(f.choices)
|
|
[(u'', u'---------'), (1L, 'category Entertainment'), (2L, "category It's a test"), (3L, 'category Third'), (4L, 'category Fourth')]
|
|
|
|
# ModelMultipleChoiceField ####################################################
|
|
|
|
>>> f = ModelMultipleChoiceField(Category.objects.all())
|
|
>>> list(f.choices)
|
|
[(1, u'Entertainment'), (2, u"It's a test"), (3, u'Third'), (4, u'Fourth')]
|
|
>>> f.clean(None)
|
|
Traceback (most recent call last):
|
|
...
|
|
ValidationError: [u'This field is required.']
|
|
>>> f.clean([])
|
|
Traceback (most recent call last):
|
|
...
|
|
ValidationError: [u'This field is required.']
|
|
>>> f.clean([1])
|
|
[<Category: Entertainment>]
|
|
>>> f.clean([2])
|
|
[<Category: It's a test>]
|
|
>>> f.clean(['1'])
|
|
[<Category: Entertainment>]
|
|
>>> f.clean(['1', '2'])
|
|
[<Category: Entertainment>, <Category: It's a test>]
|
|
>>> f.clean([1, '2'])
|
|
[<Category: Entertainment>, <Category: It's a test>]
|
|
>>> f.clean((1, '2'))
|
|
[<Category: Entertainment>, <Category: It's a test>]
|
|
>>> f.clean(['100'])
|
|
Traceback (most recent call last):
|
|
...
|
|
ValidationError: [u'Select a valid choice. 100 is not one of the available choices.']
|
|
>>> f.clean('hello')
|
|
Traceback (most recent call last):
|
|
...
|
|
ValidationError: [u'Enter a list of values.']
|
|
>>> f.clean(['fail'])
|
|
Traceback (most recent call last):
|
|
...
|
|
ValidationError: [u'"fail" is not a valid value for a primary key.']
|
|
|
|
# Add a Category object *after* the ModelMultipleChoiceField has already been
|
|
# instantiated. This proves clean() checks the database during clean() rather
|
|
# than caching it at time of instantiation.
|
|
>>> Category.objects.create(id=6, name='Sixth', url='6th')
|
|
<Category: Sixth>
|
|
>>> f.clean([6])
|
|
[<Category: Sixth>]
|
|
|
|
# Delete a Category object *after* the ModelMultipleChoiceField has already been
|
|
# instantiated. This proves clean() checks the database during clean() rather
|
|
# than caching it at time of instantiation.
|
|
>>> Category.objects.get(url='6th').delete()
|
|
>>> f.clean([6])
|
|
Traceback (most recent call last):
|
|
...
|
|
ValidationError: [u'Select a valid choice. 6 is not one of the available choices.']
|
|
|
|
>>> f = ModelMultipleChoiceField(Category.objects.all(), required=False)
|
|
>>> f.clean([])
|
|
[]
|
|
>>> f.clean(())
|
|
[]
|
|
>>> f.clean(['10'])
|
|
Traceback (most recent call last):
|
|
...
|
|
ValidationError: [u'Select a valid choice. 10 is not one of the available choices.']
|
|
>>> f.clean(['3', '10'])
|
|
Traceback (most recent call last):
|
|
...
|
|
ValidationError: [u'Select a valid choice. 10 is not one of the available choices.']
|
|
>>> f.clean(['1', '10'])
|
|
Traceback (most recent call last):
|
|
...
|
|
ValidationError: [u'Select a valid choice. 10 is not one of the available choices.']
|
|
|
|
# queryset can be changed after the field is created.
|
|
>>> f.queryset = Category.objects.exclude(name='Fourth')
|
|
>>> list(f.choices)
|
|
[(1, u'Entertainment'), (2, u"It's a test"), (3, u'Third')]
|
|
>>> f.clean([3])
|
|
[<Category: Third>]
|
|
>>> f.clean([4])
|
|
Traceback (most recent call last):
|
|
...
|
|
ValidationError: [u'Select a valid choice. 4 is not one of the available choices.']
|
|
>>> f.clean(['3', '4'])
|
|
Traceback (most recent call last):
|
|
...
|
|
ValidationError: [u'Select a valid choice. 4 is not one of the available choices.']
|
|
|
|
>>> f.queryset = Category.objects.all()
|
|
>>> f.label_from_instance = lambda obj: "multicategory " + str(obj)
|
|
>>> list(f.choices)
|
|
[(1L, 'multicategory Entertainment'), (2L, "multicategory It's a test"), (3L, 'multicategory Third'), (4L, 'multicategory Fourth')]
|
|
|
|
# OneToOneField ###############################################################
|
|
|
|
>>> class ImprovedArticleForm(ModelForm):
|
|
... class Meta:
|
|
... model = ImprovedArticle
|
|
>>> ImprovedArticleForm.base_fields.keys()
|
|
['article']
|
|
|
|
>>> class ImprovedArticleWithParentLinkForm(ModelForm):
|
|
... class Meta:
|
|
... model = ImprovedArticleWithParentLink
|
|
>>> ImprovedArticleWithParentLinkForm.base_fields.keys()
|
|
[]
|
|
|
|
>>> bw = BetterWriter(name=u'Joe Better')
|
|
>>> bw.save()
|
|
>>> sorted(model_to_dict(bw).keys())
|
|
['id', 'name', 'writer_ptr']
|
|
|
|
>>> class WriterProfileForm(ModelForm):
|
|
... class Meta:
|
|
... model = WriterProfile
|
|
>>> form = WriterProfileForm()
|
|
>>> print form.as_p()
|
|
<p><label for="id_writer">Writer:</label> <select name="writer" id="id_writer">
|
|
<option value="" selected="selected">---------</option>
|
|
<option value="1">Mike Royko</option>
|
|
<option value="2">Bob Woodward</option>
|
|
<option value="3">Carl Bernstein</option>
|
|
<option value="4">Joe Better</option>
|
|
</select></p>
|
|
<p><label for="id_age">Age:</label> <input type="text" name="age" id="id_age" /></p>
|
|
|
|
>>> data = {
|
|
... 'writer': u'2',
|
|
... 'age': u'65',
|
|
... }
|
|
>>> form = WriterProfileForm(data)
|
|
>>> instance = form.save()
|
|
>>> instance
|
|
<WriterProfile: Bob Woodward is 65>
|
|
|
|
>>> form = WriterProfileForm(instance=instance)
|
|
>>> print form.as_p()
|
|
<p><label for="id_writer">Writer:</label> <select name="writer" id="id_writer">
|
|
<option value="">---------</option>
|
|
<option value="1">Mike Royko</option>
|
|
<option value="2" selected="selected">Bob Woodward</option>
|
|
<option value="3">Carl Bernstein</option>
|
|
<option value="4">Joe Better</option>
|
|
</select></p>
|
|
<p><label for="id_age">Age:</label> <input type="text" name="age" value="65" id="id_age" /></p>
|
|
|
|
# PhoneNumberField ############################################################
|
|
|
|
>>> class PhoneNumberForm(ModelForm):
|
|
... class Meta:
|
|
... model = PhoneNumber
|
|
>>> f = PhoneNumberForm({'phone': '(312) 555-1212', 'description': 'Assistance'})
|
|
>>> f.is_valid()
|
|
True
|
|
>>> f.cleaned_data['phone']
|
|
u'312-555-1212'
|
|
>>> f.cleaned_data['description']
|
|
u'Assistance'
|
|
|
|
# FileField ###################################################################
|
|
|
|
# File forms.
|
|
|
|
>>> class TextFileForm(ModelForm):
|
|
... class Meta:
|
|
... model = TextFile
|
|
|
|
# Test conditions when files is either not given or empty.
|
|
|
|
>>> f = TextFileForm(data={'description': u'Assistance'})
|
|
>>> f.is_valid()
|
|
False
|
|
>>> f = TextFileForm(data={'description': u'Assistance'}, files={})
|
|
>>> f.is_valid()
|
|
False
|
|
|
|
# Upload a file and ensure it all works as expected.
|
|
|
|
>>> f = TextFileForm(data={'description': u'Assistance'}, files={'file': SimpleUploadedFile('test1.txt', 'hello world')})
|
|
>>> f.is_valid()
|
|
True
|
|
>>> type(f.cleaned_data['file'])
|
|
<class 'django.core.files.uploadedfile.SimpleUploadedFile'>
|
|
>>> instance = f.save()
|
|
>>> instance.file
|
|
<FieldFile: tests/test1.txt>
|
|
|
|
>>> instance.file.delete()
|
|
|
|
>>> f = TextFileForm(data={'description': u'Assistance'}, files={'file': SimpleUploadedFile('test1.txt', 'hello world')})
|
|
>>> f.is_valid()
|
|
True
|
|
>>> type(f.cleaned_data['file'])
|
|
<class 'django.core.files.uploadedfile.SimpleUploadedFile'>
|
|
>>> instance = f.save()
|
|
>>> instance.file
|
|
<FieldFile: tests/test1.txt>
|
|
|
|
# Check if the max_length attribute has been inherited from the model.
|
|
>>> f = TextFileForm(data={'description': u'Assistance'}, files={'file': SimpleUploadedFile('test-maxlength.txt', 'hello world')})
|
|
>>> f.is_valid()
|
|
False
|
|
|
|
# Edit an instance that already has the file defined in the model. This will not
|
|
# save the file again, but leave it exactly as it is.
|
|
|
|
>>> f = TextFileForm(data={'description': u'Assistance'}, instance=instance)
|
|
>>> f.is_valid()
|
|
True
|
|
>>> f.cleaned_data['file']
|
|
<FieldFile: tests/test1.txt>
|
|
>>> instance = f.save()
|
|
>>> instance.file
|
|
<FieldFile: tests/test1.txt>
|
|
|
|
# Delete the current file since this is not done by Django.
|
|
>>> instance.file.delete()
|
|
|
|
# Override the file by uploading a new one.
|
|
|
|
>>> f = TextFileForm(data={'description': u'Assistance'}, files={'file': SimpleUploadedFile('test2.txt', 'hello world')}, instance=instance)
|
|
>>> f.is_valid()
|
|
True
|
|
>>> instance = f.save()
|
|
>>> instance.file
|
|
<FieldFile: tests/test2.txt>
|
|
|
|
# Delete the current file since this is not done by Django.
|
|
>>> instance.file.delete()
|
|
|
|
>>> f = TextFileForm(data={'description': u'Assistance'}, files={'file': SimpleUploadedFile('test2.txt', 'hello world')})
|
|
>>> f.is_valid()
|
|
True
|
|
>>> instance = f.save()
|
|
>>> instance.file
|
|
<FieldFile: tests/test2.txt>
|
|
|
|
# Delete the current file since this is not done by Django.
|
|
>>> instance.file.delete()
|
|
|
|
>>> instance.delete()
|
|
|
|
# Test the non-required FileField
|
|
|
|
>>> f = TextFileForm(data={'description': u'Assistance'})
|
|
>>> f.fields['file'].required = False
|
|
>>> f.is_valid()
|
|
True
|
|
>>> instance = f.save()
|
|
>>> instance.file
|
|
<FieldFile: None>
|
|
|
|
>>> f = TextFileForm(data={'description': u'Assistance'}, files={'file': SimpleUploadedFile('test3.txt', 'hello world')}, instance=instance)
|
|
>>> f.is_valid()
|
|
True
|
|
>>> instance = f.save()
|
|
>>> instance.file
|
|
<FieldFile: tests/test3.txt>
|
|
|
|
# Instance can be edited w/out re-uploading the file and existing file should be preserved.
|
|
|
|
>>> f = TextFileForm(data={'description': u'New Description'}, instance=instance)
|
|
>>> f.fields['file'].required = False
|
|
>>> f.is_valid()
|
|
True
|
|
>>> instance = f.save()
|
|
>>> instance.description
|
|
u'New Description'
|
|
>>> instance.file
|
|
<FieldFile: tests/test3.txt>
|
|
|
|
# Delete the current file since this is not done by Django.
|
|
>>> instance.file.delete()
|
|
>>> instance.delete()
|
|
|
|
>>> f = TextFileForm(data={'description': u'Assistance'}, files={'file': SimpleUploadedFile('test3.txt', 'hello world')})
|
|
>>> f.is_valid()
|
|
True
|
|
>>> instance = f.save()
|
|
>>> instance.file
|
|
<FieldFile: tests/test3.txt>
|
|
|
|
# Delete the current file since this is not done by Django.
|
|
>>> instance.file.delete()
|
|
>>> instance.delete()
|
|
|
|
# BigIntegerField ################################################################
|
|
>>> class BigIntForm(forms.ModelForm):
|
|
... class Meta:
|
|
... model = BigInt
|
|
...
|
|
>>> bif = BigIntForm({'biggie': '-9223372036854775808'})
|
|
>>> bif.is_valid()
|
|
True
|
|
>>> bif = BigIntForm({'biggie': '-9223372036854775809'})
|
|
>>> bif.is_valid()
|
|
False
|
|
>>> bif.errors
|
|
{'biggie': [u'Ensure this value is greater than or equal to -9223372036854775808.']}
|
|
>>> bif = BigIntForm({'biggie': '9223372036854775807'})
|
|
>>> bif.is_valid()
|
|
True
|
|
>>> bif = BigIntForm({'biggie': '9223372036854775808'})
|
|
>>> bif.is_valid()
|
|
False
|
|
>>> bif.errors
|
|
{'biggie': [u'Ensure this value is less than or equal to 9223372036854775807.']}
|
|
"""}
|
|
|
|
if test_images:
|
|
__test__['API_TESTS'] += """
|
|
# ImageField ###################################################################
|
|
|
|
# ImageField and FileField are nearly identical, but they differ slighty when
|
|
# it comes to validation. This specifically tests that #6302 is fixed for
|
|
# both file fields and image fields.
|
|
|
|
>>> class ImageFileForm(ModelForm):
|
|
... class Meta:
|
|
... model = ImageFile
|
|
|
|
>>> image_data = open(os.path.join(os.path.dirname(__file__), "test.png"), 'rb').read()
|
|
>>> image_data2 = open(os.path.join(os.path.dirname(__file__), "test2.png"), 'rb').read()
|
|
|
|
>>> f = ImageFileForm(data={'description': u'An image'}, files={'image': SimpleUploadedFile('test.png', image_data)})
|
|
>>> f.is_valid()
|
|
True
|
|
>>> type(f.cleaned_data['image'])
|
|
<class 'django.core.files.uploadedfile.SimpleUploadedFile'>
|
|
>>> instance = f.save()
|
|
>>> instance.image
|
|
<...FieldFile: tests/test.png>
|
|
>>> instance.width
|
|
16
|
|
>>> instance.height
|
|
16
|
|
|
|
# Delete the current file since this is not done by Django, but don't save
|
|
# because the dimension fields are not null=True.
|
|
>>> instance.image.delete(save=False)
|
|
|
|
>>> f = ImageFileForm(data={'description': u'An image'}, files={'image': SimpleUploadedFile('test.png', image_data)})
|
|
>>> f.is_valid()
|
|
True
|
|
>>> type(f.cleaned_data['image'])
|
|
<class 'django.core.files.uploadedfile.SimpleUploadedFile'>
|
|
>>> instance = f.save()
|
|
>>> instance.image
|
|
<...FieldFile: tests/test.png>
|
|
>>> instance.width
|
|
16
|
|
>>> instance.height
|
|
16
|
|
|
|
# Edit an instance that already has the (required) image defined in the model. This will not
|
|
# save the image again, but leave it exactly as it is.
|
|
|
|
>>> f = ImageFileForm(data={'description': u'Look, it changed'}, instance=instance)
|
|
>>> f.is_valid()
|
|
True
|
|
>>> f.cleaned_data['image']
|
|
<...FieldFile: tests/test.png>
|
|
>>> instance = f.save()
|
|
>>> instance.image
|
|
<...FieldFile: tests/test.png>
|
|
>>> instance.height
|
|
16
|
|
>>> instance.width
|
|
16
|
|
|
|
# Delete the current file since this is not done by Django, but don't save
|
|
# because the dimension fields are not null=True.
|
|
>>> instance.image.delete(save=False)
|
|
|
|
# Override the file by uploading a new one.
|
|
|
|
>>> f = ImageFileForm(data={'description': u'Changed it'}, files={'image': SimpleUploadedFile('test2.png', image_data2)}, instance=instance)
|
|
>>> f.is_valid()
|
|
True
|
|
>>> instance = f.save()
|
|
>>> instance.image
|
|
<...FieldFile: tests/test2.png>
|
|
>>> instance.height
|
|
32
|
|
>>> instance.width
|
|
48
|
|
|
|
# Delete the current file since this is not done by Django, but don't save
|
|
# because the dimension fields are not null=True.
|
|
>>> instance.image.delete(save=False)
|
|
>>> instance.delete()
|
|
|
|
>>> f = ImageFileForm(data={'description': u'Changed it'}, files={'image': SimpleUploadedFile('test2.png', image_data2)})
|
|
>>> f.is_valid()
|
|
True
|
|
>>> instance = f.save()
|
|
>>> instance.image
|
|
<...FieldFile: tests/test2.png>
|
|
>>> instance.height
|
|
32
|
|
>>> instance.width
|
|
48
|
|
|
|
# Delete the current file since this is not done by Django, but don't save
|
|
# because the dimension fields are not null=True.
|
|
>>> instance.image.delete(save=False)
|
|
>>> instance.delete()
|
|
|
|
# Test the non-required ImageField
|
|
|
|
>>> class OptionalImageFileForm(ModelForm):
|
|
... class Meta:
|
|
... model = OptionalImageFile
|
|
|
|
>>> f = OptionalImageFileForm(data={'description': u'Test'})
|
|
>>> f.is_valid()
|
|
True
|
|
>>> instance = f.save()
|
|
>>> instance.image
|
|
<...FieldFile: None>
|
|
>>> instance.width
|
|
>>> instance.height
|
|
|
|
>>> f = OptionalImageFileForm(data={'description': u'And a final one'}, files={'image': SimpleUploadedFile('test3.png', image_data)}, instance=instance)
|
|
>>> f.is_valid()
|
|
True
|
|
>>> instance = f.save()
|
|
>>> instance.image
|
|
<...FieldFile: tests/test3.png>
|
|
>>> instance.width
|
|
16
|
|
>>> instance.height
|
|
16
|
|
|
|
# Editing the instance without re-uploading the image should not affect the image or its width/height properties
|
|
>>> f = OptionalImageFileForm(data={'description': u'New Description'}, instance=instance)
|
|
>>> f.is_valid()
|
|
True
|
|
>>> instance = f.save()
|
|
>>> instance.description
|
|
u'New Description'
|
|
>>> instance.image
|
|
<...FieldFile: tests/test3.png>
|
|
>>> instance.width
|
|
16
|
|
>>> instance.height
|
|
16
|
|
|
|
# Delete the current file since this is not done by Django.
|
|
>>> instance.image.delete()
|
|
>>> instance.delete()
|
|
|
|
>>> f = OptionalImageFileForm(data={'description': u'And a final one'}, files={'image': SimpleUploadedFile('test4.png', image_data2)})
|
|
>>> f.is_valid()
|
|
True
|
|
>>> instance = f.save()
|
|
>>> instance.image
|
|
<...FieldFile: tests/test4.png>
|
|
>>> instance.width
|
|
48
|
|
>>> instance.height
|
|
32
|
|
>>> instance.delete()
|
|
|
|
# Test callable upload_to behavior that's dependent on the value of another field in the model
|
|
>>> f = ImageFileForm(data={'description': u'And a final one', 'path': 'foo'}, files={'image': SimpleUploadedFile('test4.png', image_data)})
|
|
>>> f.is_valid()
|
|
True
|
|
>>> instance = f.save()
|
|
>>> instance.image
|
|
<...FieldFile: foo/test4.png>
|
|
>>> instance.delete()
|
|
"""
|
|
|
|
__test__['API_TESTS'] += """
|
|
|
|
# Media on a ModelForm ########################################################
|
|
|
|
# Similar to a regular Form class you can define custom media to be used on
|
|
# the ModelForm.
|
|
|
|
>>> class ModelFormWithMedia(ModelForm):
|
|
... class Media:
|
|
... js = ('/some/form/javascript',)
|
|
... css = {
|
|
... 'all': ('/some/form/css',)
|
|
... }
|
|
... class Meta:
|
|
... model = PhoneNumber
|
|
>>> f = ModelFormWithMedia()
|
|
>>> print f.media
|
|
<link href="/some/form/css" type="text/css" media="all" rel="stylesheet" />
|
|
<script type="text/javascript" src="/some/form/javascript"></script>
|
|
|
|
>>> class CommaSeparatedIntegerForm(ModelForm):
|
|
... class Meta:
|
|
... model = CommaSeparatedInteger
|
|
|
|
>>> f = CommaSeparatedIntegerForm().fields['field']
|
|
>>> f.clean('1,2,3')
|
|
u'1,2,3'
|
|
>>> f.clean('1a,2')
|
|
Traceback (most recent call last):
|
|
...
|
|
ValidationError: [u'Enter only digits separated by commas.']
|
|
>>> f.clean(',,,,')
|
|
u',,,,'
|
|
>>> f.clean('1.2')
|
|
Traceback (most recent call last):
|
|
...
|
|
ValidationError: [u'Enter only digits separated by commas.']
|
|
>>> f.clean('1,a,2')
|
|
Traceback (most recent call last):
|
|
...
|
|
ValidationError: [u'Enter only digits separated by commas.']
|
|
>>> f.clean('1,,2')
|
|
u'1,,2'
|
|
>>> f.clean('1')
|
|
u'1'
|
|
|
|
# unique/unique_together validation
|
|
|
|
>>> class ProductForm(ModelForm):
|
|
... class Meta:
|
|
... model = Product
|
|
>>> form = ProductForm({'slug': 'teddy-bear-blue'})
|
|
>>> form.is_valid()
|
|
True
|
|
>>> obj = form.save()
|
|
>>> obj
|
|
<Product: teddy-bear-blue>
|
|
>>> form = ProductForm({'slug': 'teddy-bear-blue'})
|
|
>>> form.is_valid()
|
|
False
|
|
>>> form._errors
|
|
{'slug': [u'Product with this Slug already exists.']}
|
|
>>> form = ProductForm({'slug': 'teddy-bear-blue'}, instance=obj)
|
|
>>> form.is_valid()
|
|
True
|
|
|
|
# ModelForm test of unique_together constraint
|
|
>>> class PriceForm(ModelForm):
|
|
... class Meta:
|
|
... model = Price
|
|
>>> form = PriceForm({'price': '6.00', 'quantity': '1'})
|
|
>>> form.is_valid()
|
|
True
|
|
>>> form.save()
|
|
<Price: 1 for 6.00>
|
|
>>> form = PriceForm({'price': '6.00', 'quantity': '1'})
|
|
>>> form.is_valid()
|
|
False
|
|
>>> form._errors
|
|
{'__all__': [u'Price with this Price and Quantity already exists.']}
|
|
|
|
>>> class PriceForm(ModelForm):
|
|
... class Meta:
|
|
... model = Price
|
|
... exclude = ('quantity',)
|
|
>>> form = PriceForm({'price': '6.00'})
|
|
>>> form.is_valid()
|
|
True
|
|
|
|
# Unique & unique together with null values
|
|
>>> class BookForm(ModelForm):
|
|
... class Meta:
|
|
... model = Book
|
|
>>> w = Writer.objects.get(name='Mike Royko')
|
|
>>> form = BookForm({'title': 'I May Be Wrong But I Doubt It', 'author' : w.pk})
|
|
>>> form.is_valid()
|
|
True
|
|
>>> form.save()
|
|
<Book: Book object>
|
|
>>> form = BookForm({'title': 'I May Be Wrong But I Doubt It', 'author' : w.pk})
|
|
>>> form.is_valid()
|
|
False
|
|
>>> form._errors
|
|
{'__all__': [u'Book with this Title and Author already exists.']}
|
|
>>> form = BookForm({'title': 'I May Be Wrong But I Doubt It'})
|
|
>>> form.is_valid()
|
|
True
|
|
>>> form.save()
|
|
<Book: Book object>
|
|
>>> form = BookForm({'title': 'I May Be Wrong But I Doubt It'})
|
|
>>> form.is_valid()
|
|
True
|
|
|
|
# Test for primary_key being in the form and failing validation.
|
|
>>> class ExplicitPKForm(ModelForm):
|
|
... class Meta:
|
|
... model = ExplicitPK
|
|
... fields = ('key', 'desc',)
|
|
>>> form = ExplicitPKForm({'key': u'', 'desc': u'' })
|
|
>>> form.is_valid()
|
|
False
|
|
|
|
# Ensure keys and blank character strings are tested for uniqueness.
|
|
>>> form = ExplicitPKForm({'key': u'key1', 'desc': u''})
|
|
>>> form.is_valid()
|
|
True
|
|
>>> form.save()
|
|
<ExplicitPK: key1>
|
|
>>> form = ExplicitPKForm({'key': u'key1', 'desc': u''})
|
|
>>> form.is_valid()
|
|
False
|
|
>>> sorted(form.errors.items())
|
|
[('__all__', [u'Explicit pk with this Key and Desc already exists.']), ('desc', [u'Explicit pk with this Desc already exists.']), ('key', [u'Explicit pk with this Key already exists.'])]
|
|
|
|
# Choices on CharField and IntegerField
|
|
>>> class ArticleForm(ModelForm):
|
|
... class Meta:
|
|
... model = Article
|
|
>>> f = ArticleForm()
|
|
>>> f.fields['status'].clean('42')
|
|
Traceback (most recent call last):
|
|
...
|
|
ValidationError: [u'Select a valid choice. 42 is not one of the available choices.']
|
|
|
|
>>> class ArticleStatusForm(ModelForm):
|
|
... class Meta:
|
|
... model = ArticleStatus
|
|
>>> f = ArticleStatusForm()
|
|
>>> f.fields['status'].clean('z')
|
|
Traceback (most recent call last):
|
|
...
|
|
ValidationError: [u'Select a valid choice. z is not one of the available choices.']
|
|
|
|
# Foreign keys which use to_field #############################################
|
|
|
|
>>> apple = Inventory.objects.create(barcode=86, name='Apple')
|
|
>>> pear = Inventory.objects.create(barcode=22, name='Pear')
|
|
>>> core = Inventory.objects.create(barcode=87, name='Core', parent=apple)
|
|
|
|
>>> field = ModelChoiceField(Inventory.objects.all(), to_field_name='barcode')
|
|
>>> for choice in field.choices:
|
|
... print choice
|
|
(u'', u'---------')
|
|
(86, u'Apple')
|
|
(22, u'Pear')
|
|
(87, u'Core')
|
|
|
|
>>> class InventoryForm(ModelForm):
|
|
... class Meta:
|
|
... model = Inventory
|
|
>>> form = InventoryForm(instance=core)
|
|
>>> print form['parent']
|
|
<select name="parent" id="id_parent">
|
|
<option value="">---------</option>
|
|
<option value="86" selected="selected">Apple</option>
|
|
<option value="22">Pear</option>
|
|
<option value="87">Core</option>
|
|
</select>
|
|
|
|
>>> data = model_to_dict(core)
|
|
>>> data['parent'] = '22'
|
|
>>> form = InventoryForm(data=data, instance=core)
|
|
>>> core = form.save()
|
|
>>> core.parent
|
|
<Inventory: Pear>
|
|
|
|
>>> class CategoryForm(ModelForm):
|
|
... description = forms.CharField()
|
|
... class Meta:
|
|
... model = Category
|
|
... fields = ['description', 'url']
|
|
|
|
>>> CategoryForm.base_fields.keys()
|
|
['description', 'url']
|
|
|
|
>>> print CategoryForm()
|
|
<tr><th><label for="id_description">Description:</label></th><td><input type="text" name="description" id="id_description" /></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>
|
|
|
|
### Validation on unique_for_date
|
|
|
|
>>> p = Post.objects.create(title="Django 1.0 is released", slug="Django 1.0", subtitle="Finally", posted=datetime.date(2008, 9, 3))
|
|
>>> class PostForm(ModelForm):
|
|
... class Meta:
|
|
... model = Post
|
|
|
|
>>> f = PostForm({'title': "Django 1.0 is released", 'posted': '2008-09-03'})
|
|
>>> f.is_valid()
|
|
False
|
|
>>> f.errors
|
|
{'title': [u'Title must be unique for Posted date.']}
|
|
>>> f = PostForm({'title': "Work on Django 1.1 begins", 'posted': '2008-09-03'})
|
|
>>> f.is_valid()
|
|
True
|
|
>>> f = PostForm({'title': "Django 1.0 is released", 'posted': '2008-09-04'})
|
|
>>> f.is_valid()
|
|
True
|
|
>>> f = PostForm({'slug': "Django 1.0", 'posted': '2008-01-01'})
|
|
>>> f.is_valid()
|
|
False
|
|
>>> f.errors
|
|
{'slug': [u'Slug must be unique for Posted year.']}
|
|
>>> f = PostForm({'subtitle': "Finally", 'posted': '2008-09-30'})
|
|
>>> f.is_valid()
|
|
False
|
|
>>> f.errors
|
|
{'subtitle': [u'Subtitle must be unique for Posted month.']}
|
|
>>> f = PostForm({'subtitle': "Finally", "title": "Django 1.0 is released", "slug": "Django 1.0", 'posted': '2008-09-03'}, instance=p)
|
|
>>> f.is_valid()
|
|
True
|
|
|
|
# Clean up
|
|
>>> import shutil
|
|
>>> shutil.rmtree(temp_storage_dir)
|
|
"""
|