Added unit tests for form_for_model and form_for_instance.
git-svn-id: http://code.djangoproject.com/svn/django/trunk@5196 bcc190cf-cafb-0310-a4f2-bffc1f526a37
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Russell Keith-Magee
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"""
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Tests for the model services for forms.
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"""
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from django.db import models
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from django.newforms.models import form_for_instance, form_for_model
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from datetime import date
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class Publication(models.Model):
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title = models.CharField(maxlength=30)
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def __str__(self):
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return self.title
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class Meta:
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ordering = ('title',)
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class Author(models.Model):
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first_name = models.CharField(maxlength=30)
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last_name = models.CharField(maxlength=30)
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def __str__(self):
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return '%s %s' % (self.first_name, self.last_name)
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class Meta:
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ordering = ('last_name','first_name')
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class Article(models.Model):
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headline = models.CharField(maxlength=100)
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publication = models.ForeignKey(Publication)
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price = models.FloatField(decimal_places=2, max_digits=8)
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authors = models.ManyToManyField(Author)
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pub_date = models.DateTimeField()
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def __str__(self):
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return self.headline
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class Meta:
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ordering = ('headline',)
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__test__ = {'API_TESTS':"""
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# Create some Authors.
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>>> a = Author(first_name='John', last_name='Smith')
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>>> a.save()
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>>> a2 = Author(first_name='Peter', last_name='Jones')
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>>> a2.save()
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>>> a3 = Author(first_name='Alice', last_name='Fletcher')
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>>> a3.save()
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# Create some Publications.
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>>> p1 = Publication(id=None, title='The Python Journal')
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>>> p1.save()
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>>> p2 = Publication(id=None, title='Science News')
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>>> p2.save()
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# Create an article
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>>> art = Article(headline='Django lets you build web apps easily', publication=p1, pub_date=date(2006,02,05), price=2.50)
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>>> art.save()
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>>> art.authors = [a, a2]
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###########################################################
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# form_from_model
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###########################################################
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# Create the Form for the Article model
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>>> ArticleForm = form_for_model(Article)
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# Instantiate the form with no data
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>>> f = ArticleForm()
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>>> print f
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<tr><th><label for="id_headline">Headline:</label></th><td><input id="id_headline" type="text" name="headline" maxlength="100" /></td></tr>
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<tr><th><label for="id_publication">Publication:</label></th><td><select name="publication" id="id_publication">
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<option value="" selected="selected">---------</option>
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<option value="2">Science News</option>
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<option value="1">The Python Journal</option>
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</select></td></tr>
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<tr><th><label for="id_price">Price:</label></th><td><input type="text" name="price" id="id_price" /></td></tr>
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<tr><th><label for="id_pub_date">Pub date:</label></th><td><input type="text" name="pub_date" id="id_pub_date" /></td></tr>
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<tr><th><label for="id_authors">Authors:</label></th><td><select multiple="multiple" name="authors" id="id_authors">
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<option value="3">Alice Fletcher</option>
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<option value="2">Peter Jones</option>
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<option value="1">John Smith</option>
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</select><br /> Hold down "Control", or "Command" on a Mac, to select more than one.</td></tr>
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# Check that the form is not valid
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>>> f.is_valid()
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False
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# Attempt to save the form. Fail, because form cannot be validated
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>>> f.save()
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Traceback (most recent call last):
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...
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AttributeError: 'ArticleForm' object has no attribute 'clean_data'
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# Instantiate the form with data
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>>> f = ArticleForm({'headline':'Django cures cancer!', 'publication': 1, 'price':'3.20', 'pub_date':'2006-11-08', 'authors':[1,2]})
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>>> print f
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<tr><th><label for="id_headline">Headline:</label></th><td><input id="id_headline" type="text" name="headline" value="Django cures cancer!" maxlength="100" /></td></tr>
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<tr><th><label for="id_publication">Publication:</label></th><td><select name="publication" id="id_publication">
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<option value="">---------</option>
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<option value="2">Science News</option>
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<option value="1" selected="selected">The Python Journal</option>
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</select></td></tr>
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<tr><th><label for="id_price">Price:</label></th><td><input type="text" name="price" value="3.20" id="id_price" /></td></tr>
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<tr><th><label for="id_pub_date">Pub date:</label></th><td><input type="text" name="pub_date" value="2006-11-08" id="id_pub_date" /></td></tr>
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<tr><th><label for="id_authors">Authors:</label></th><td><select multiple="multiple" name="authors" id="id_authors">
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<option value="3">Alice Fletcher</option>
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<option value="2" selected="selected">Peter Jones</option>
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<option value="1" selected="selected">John Smith</option>
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</select><br /> Hold down "Control", or "Command" on a Mac, to select more than one.</td></tr>
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# Check that the form is valid
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>>> f.is_valid()
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True
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# Form can be saved!
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>>> f.save()
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<Article: Django cures cancer!>
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# There are now 2 articles
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>>> Article.objects.count()
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2
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# Instantiate the form with data that is missing some fields
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>>> f = ArticleForm({'headline':'Django cures cancer!', 'publication': 1, 'authors':[1,2]})
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>>> print f
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<tr><th><label for="id_headline">Headline:</label></th><td><input id="id_headline" type="text" name="headline" value="Django cures cancer!" maxlength="100" /></td></tr>
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<tr><th><label for="id_publication">Publication:</label></th><td><select name="publication" id="id_publication">
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<option value="">---------</option>
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<option value="2">Science News</option>
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<option value="1" selected="selected">The Python Journal</option>
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</select></td></tr>
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<tr><th><label for="id_price">Price:</label></th><td><ul class="errorlist"><li>This field is required.</li></ul><input type="text" name="price" id="id_price" /></td></tr>
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<tr><th><label for="id_pub_date">Pub date:</label></th><td><ul class="errorlist"><li>This field is required.</li></ul><input type="text" name="pub_date" id="id_pub_date" /></td></tr>
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<tr><th><label for="id_authors">Authors:</label></th><td><select multiple="multiple" name="authors" id="id_authors">
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<option value="3">Alice Fletcher</option>
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<option value="2" selected="selected">Peter Jones</option>
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<option value="1" selected="selected">John Smith</option>
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</select><br /> Hold down "Control", or "Command" on a Mac, to select more than one.</td></tr>
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# Check that the form is not valid
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>>> f.is_valid()
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False
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# Attempt to save the form. Fail, because form cannot be validated
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>>> f.save()
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Traceback (most recent call last):
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...
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ValueError: The Article could not be created because the data didn't validate.
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###########################################################
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# form_from_instance
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###########################################################
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# Create a Form for an instance of Article
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>>> ArticleInstanceForm = form_for_instance(art)
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# Instantiate the form with no data
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>>> f = ArticleInstanceForm()
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>>> print f
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<tr><th><label for="id_headline">Headline:</label></th><td><input id="id_headline" type="text" name="headline" value="Django lets you build web apps easily" maxlength="100" /></td></tr>
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<tr><th><label for="id_publication">Publication:</label></th><td><select name="publication" id="id_publication">
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<option value="">---------</option>
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<option value="2">Science News</option>
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<option value="1" selected="selected">The Python Journal</option>
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</select></td></tr>
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<tr><th><label for="id_price">Price:</label></th><td><input type="text" name="price" value="2.5" id="id_price" /></td></tr>
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<tr><th><label for="id_pub_date">Pub date:</label></th><td><input type="text" name="pub_date" value="2006-02-05" id="id_pub_date" /></td></tr>
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<tr><th><label for="id_authors">Authors:</label></th><td><select multiple="multiple" name="authors" id="id_authors">
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<option value="3">Alice Fletcher</option>
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<option value="2" selected="selected">Peter Jones</option>
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<option value="1" selected="selected">John Smith</option>
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</select><br /> Hold down "Control", or "Command" on a Mac, to select more than one.</td></tr>
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# Check that the form is not valid (no data dictionary provided)
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>>> f.is_valid()
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False
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# Attempt to save the form. Fail, because form cannot be validated
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>>> f.save()
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Traceback (most recent call last):
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...
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AttributeError: 'ArticleInstanceForm' object has no attribute 'clean_data'
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# Instantiate the form with data
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>>> f = ArticleInstanceForm({'headline':'Nasa uses Python', 'publication': 2, 'price':'4.70', 'pub_date':'2007-01-21', 'authors': [3]})
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>>> print f
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<tr><th><label for="id_headline">Headline:</label></th><td><input id="id_headline" type="text" name="headline" value="Nasa uses Python" maxlength="100" /></td></tr>
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<tr><th><label for="id_publication">Publication:</label></th><td><select name="publication" id="id_publication">
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<option value="">---------</option>
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<option value="2" selected="selected">Science News</option>
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<option value="1">The Python Journal</option>
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</select></td></tr>
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<tr><th><label for="id_price">Price:</label></th><td><input type="text" name="price" value="4.70" id="id_price" /></td></tr>
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<tr><th><label for="id_pub_date">Pub date:</label></th><td><input type="text" name="pub_date" value="2007-01-21" id="id_pub_date" /></td></tr>
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<tr><th><label for="id_authors">Authors:</label></th><td><select multiple="multiple" name="authors" id="id_authors">
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<option value="3" selected="selected">Alice Fletcher</option>
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<option value="2">Peter Jones</option>
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<option value="1">John Smith</option>
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</select><br /> Hold down "Control", or "Command" on a Mac, to select more than one.</td></tr>
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# Check that the form is valid
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>>> f.is_valid()
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True
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# Form can be saved!
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>>> f.save()
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<Article: Nasa uses Python>
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# There are still only 2 articles, as we have saved an existing instance
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>>> Article.objects.count()
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2
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# Instantiate the form with data that is missing some fields
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>>> f = ArticleInstanceForm({'headline':'Nasa uses Python', 'publication': 2, 'authors': [3]})
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>>> print f
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<tr><th><label for="id_headline">Headline:</label></th><td><input id="id_headline" type="text" name="headline" value="Nasa uses Python" maxlength="100" /></td></tr>
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<tr><th><label for="id_publication">Publication:</label></th><td><select name="publication" id="id_publication">
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<option value="">---------</option>
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<option value="2" selected="selected">Science News</option>
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<option value="1">The Python Journal</option>
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</select></td></tr>
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<tr><th><label for="id_price">Price:</label></th><td><ul class="errorlist"><li>This field is required.</li></ul><input type="text" name="price" id="id_price" /></td></tr>
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<tr><th><label for="id_pub_date">Pub date:</label></th><td><ul class="errorlist"><li>This field is required.</li></ul><input type="text" name="pub_date" id="id_pub_date" /></td></tr>
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<tr><th><label for="id_authors">Authors:</label></th><td><select multiple="multiple" name="authors" id="id_authors">
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<option value="3" selected="selected">Alice Fletcher</option>
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<option value="2">Peter Jones</option>
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<option value="1">John Smith</option>
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</select><br /> Hold down "Control", or "Command" on a Mac, to select more than one.</td></tr>
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# Check that the form is not valid
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>>> f.is_valid()
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False
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# Attempt to save the form. Fail, because form cannot be validated
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>>> f.save()
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Traceback (most recent call last):
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...
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ValueError: The Article could not be changed because the data didn't validate.
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"""}
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