author | Nishanth Amuluru <nishanth@fossee.in> |
Sat, 08 Jan 2011 11:20:57 +0530 | |
changeset 69 | c6bca38c1cbf |
permissions | -rw-r--r-- |
69
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from datetime import datetime |
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from django.test import TestCase |
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from django.core.exceptions import FieldError |
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from models import Article, Reporter |
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class ManyToOneTests(TestCase): |
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def setUp(self): |
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# Create a few Reporters. |
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self.r = Reporter(first_name='John', last_name='Smith', email='john@example.com') |
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self.r.save() |
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self.r2 = Reporter(first_name='Paul', last_name='Jones', email='paul@example.com') |
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self.r2.save() |
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# Create an Article. |
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self.a = Article(id=None, headline="This is a test", |
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pub_date=datetime(2005, 7, 27), reporter=self.r) |
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self.a.save() |
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def test_get(self): |
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# Article objects have access to their related Reporter objects. |
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r = self.a.reporter |
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self.assertEqual(r.id, self.r.id) |
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# These are strings instead of unicode strings because that's what was used in |
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# the creation of this reporter (and we haven't refreshed the data from the |
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# database, which always returns unicode strings). |
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self.assertEqual((r.first_name, self.r.last_name), ('John', 'Smith')) |
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def test_create(self): |
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# You can also instantiate an Article by passing the Reporter's ID |
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# instead of a Reporter object. |
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a3 = Article(id=None, headline="Third article", |
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pub_date=datetime(2005, 7, 27), reporter_id=self.r.id) |
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a3.save() |
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self.assertEqual(a3.reporter.id, self.r.id) |
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# Similarly, the reporter ID can be a string. |
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a4 = Article(id=None, headline="Fourth article", |
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pub_date=datetime(2005, 7, 27), reporter_id=str(self.r.id)) |
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a4.save() |
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self.assertEqual(repr(a4.reporter), "<Reporter: John Smith>") |
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def test_add(self): |
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# Create an Article via the Reporter object. |
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new_article = self.r.article_set.create(headline="John's second story", |
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pub_date=datetime(2005, 7, 29)) |
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self.assertEqual(repr(new_article), "<Article: John's second story>") |
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self.assertEqual(new_article.reporter.id, self.r.id) |
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# Create a new article, and add it to the article set. |
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new_article2 = Article(headline="Paul's story", pub_date=datetime(2006, 1, 17)) |
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self.r.article_set.add(new_article2) |
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self.assertEqual(new_article2.reporter.id, self.r.id) |
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self.assertQuerysetEqual(self.r.article_set.all(), |
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[ |
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"<Article: John's second story>", |
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"<Article: Paul's story>", |
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"<Article: This is a test>", |
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]) |
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# Add the same article to a different article set - check that it moves. |
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self.r2.article_set.add(new_article2) |
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self.assertEqual(new_article2.reporter.id, self.r2.id) |
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self.assertQuerysetEqual(self.r2.article_set.all(), ["<Article: Paul's story>"]) |
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# Adding an object of the wrong type raises TypeError. |
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self.assertRaises(TypeError, self.r.article_set.add, self.r2) |
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self.assertQuerysetEqual(self.r.article_set.all(), |
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[ |
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"<Article: John's second story>", |
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"<Article: This is a test>", |
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]) |
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def test_assign(self): |
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new_article = self.r.article_set.create(headline="John's second story", |
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pub_date=datetime(2005, 7, 29)) |
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new_article2 = self.r2.article_set.create(headline="Paul's story", |
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pub_date=datetime(2006, 1, 17)) |
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# Assign the article to the reporter directly using the descriptor. |
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new_article2.reporter = self.r |
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new_article2.save() |
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self.assertEqual(repr(new_article2.reporter), "<Reporter: John Smith>") |
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self.assertEqual(new_article2.reporter.id, self.r.id) |
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self.assertQuerysetEqual(self.r.article_set.all(), [ |
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"<Article: John's second story>", |
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"<Article: Paul's story>", |
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"<Article: This is a test>", |
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]) |
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self.assertQuerysetEqual(self.r2.article_set.all(), []) |
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# Set the article back again using set descriptor. |
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self.r2.article_set = [new_article, new_article2] |
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self.assertQuerysetEqual(self.r.article_set.all(), ["<Article: This is a test>"]) |
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self.assertQuerysetEqual(self.r2.article_set.all(), |
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[ |
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"<Article: John's second story>", |
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"<Article: Paul's story>", |
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]) |
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# Funny case - assignment notation can only go so far; because the |
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# ForeignKey cannot be null, existing members of the set must remain. |
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self.r.article_set = [new_article] |
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self.assertQuerysetEqual(self.r.article_set.all(), |
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[ |
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"<Article: John's second story>", |
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"<Article: This is a test>", |
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]) |
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self.assertQuerysetEqual(self.r2.article_set.all(), ["<Article: Paul's story>"]) |
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# Reporter cannot be null - there should not be a clear or remove method |
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self.assertFalse(hasattr(self.r2.article_set, 'remove')) |
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self.assertFalse(hasattr(self.r2.article_set, 'clear')) |
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def test_selects(self): |
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|
112 |
new_article = self.r.article_set.create(headline="John's second story", |
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|
113 |
pub_date=datetime(2005, 7, 29)) |
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|
114 |
new_article2 = self.r2.article_set.create(headline="Paul's story", |
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|
115 |
pub_date=datetime(2006, 1, 17)) |
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|
116 |
# Reporter objects have access to their related Article objects. |
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|
117 |
self.assertQuerysetEqual(self.r.article_set.all(), [ |
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|
118 |
"<Article: John's second story>", |
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changeset
|
119 |
"<Article: This is a test>", |
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changeset
|
120 |
]) |
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changeset
|
121 |
self.assertQuerysetEqual(self.r.article_set.filter(headline__startswith='This'), |
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|
122 |
["<Article: This is a test>"]) |
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|
123 |
self.assertEqual(self.r.article_set.count(), 2) |
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|
124 |
self.assertEqual(self.r2.article_set.count(), 1) |
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|
125 |
# Get articles by id |
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|
126 |
self.assertQuerysetEqual(Article.objects.filter(id__exact=self.a.id), |
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|
127 |
["<Article: This is a test>"]) |
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|
128 |
self.assertQuerysetEqual(Article.objects.filter(pk=self.a.id), |
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|
129 |
["<Article: This is a test>"]) |
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|
130 |
# Query on an article property |
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|
131 |
self.assertQuerysetEqual(Article.objects.filter(headline__startswith='This'), |
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|
132 |
["<Article: This is a test>"]) |
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|
133 |
# The API automatically follows relationships as far as you need. |
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|
134 |
# Use double underscores to separate relationships. |
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|
135 |
# This works as many levels deep as you want. There's no limit. |
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|
136 |
# Find all Articles for any Reporter whose first name is "John". |
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|
137 |
self.assertQuerysetEqual(Article.objects.filter(reporter__first_name__exact='John'), |
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changeset
|
138 |
[ |
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changeset
|
139 |
"<Article: John's second story>", |
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changeset
|
140 |
"<Article: This is a test>", |
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changeset
|
141 |
]) |
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changeset
|
142 |
# Check that implied __exact also works |
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changeset
|
143 |
self.assertQuerysetEqual(Article.objects.filter(reporter__first_name='John'), |
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changeset
|
144 |
[ |
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diff
changeset
|
145 |
"<Article: John's second story>", |
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changeset
|
146 |
"<Article: This is a test>", |
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|
147 |
]) |
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changeset
|
148 |
# Query twice over the related field. |
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|
149 |
self.assertQuerysetEqual( |
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changeset
|
150 |
Article.objects.filter(reporter__first_name__exact='John', |
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changeset
|
151 |
reporter__last_name__exact='Smith'), |
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changeset
|
152 |
[ |
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changeset
|
153 |
"<Article: John's second story>", |
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changeset
|
154 |
"<Article: This is a test>", |
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changeset
|
155 |
]) |
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Added buildout stuff and made changes accordingly
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changeset
|
156 |
# The underlying query only makes one join when a related table is referenced twice. |
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|
157 |
queryset = Article.objects.filter(reporter__first_name__exact='John', |
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|
158 |
reporter__last_name__exact='Smith') |
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|
159 |
self.assertEqual(queryset.query.get_compiler(queryset.db).as_sql()[0].count('INNER JOIN'), 1) |
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changeset
|
160 |
|
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Nishanth Amuluru <nishanth@fossee.in>
parents:
diff
changeset
|
161 |
# The automatically joined table has a predictable name. |
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Added buildout stuff and made changes accordingly
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changeset
|
162 |
self.assertQuerysetEqual( |
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changeset
|
163 |
Article.objects.filter(reporter__first_name__exact='John').extra( |
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changeset
|
164 |
where=["many_to_one_reporter.last_name='Smith'"]), |
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parents:
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changeset
|
165 |
[ |
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Nishanth Amuluru <nishanth@fossee.in>
parents:
diff
changeset
|
166 |
"<Article: John's second story>", |
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Nishanth Amuluru <nishanth@fossee.in>
parents:
diff
changeset
|
167 |
"<Article: This is a test>", |
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Nishanth Amuluru <nishanth@fossee.in>
parents:
diff
changeset
|
168 |
]) |
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Nishanth Amuluru <nishanth@fossee.in>
parents:
diff
changeset
|
169 |
# ... and should work fine with the unicode that comes out of forms.Form.cleaned_data |
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Added buildout stuff and made changes accordingly
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changeset
|
170 |
self.assertQuerysetEqual( |
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Added buildout stuff and made changes accordingly
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parents:
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changeset
|
171 |
Article.objects.filter(reporter__first_name__exact='John' |
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Added buildout stuff and made changes accordingly
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parents:
diff
changeset
|
172 |
).extra(where=["many_to_one_reporter.last_name='%s'" % u'Smith']), |
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Added buildout stuff and made changes accordingly
Nishanth Amuluru <nishanth@fossee.in>
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diff
changeset
|
173 |
[ |
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Nishanth Amuluru <nishanth@fossee.in>
parents:
diff
changeset
|
174 |
"<Article: John's second story>", |
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Added buildout stuff and made changes accordingly
Nishanth Amuluru <nishanth@fossee.in>
parents:
diff
changeset
|
175 |
"<Article: This is a test>", |
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Nishanth Amuluru <nishanth@fossee.in>
parents:
diff
changeset
|
176 |
]) |
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Nishanth Amuluru <nishanth@fossee.in>
parents:
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changeset
|
177 |
# Find all Articles for a Reporter. |
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Nishanth Amuluru <nishanth@fossee.in>
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changeset
|
178 |
# Use direct ID check, pk check, and object comparison |
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parents:
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|
179 |
self.assertQuerysetEqual( |
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parents:
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changeset
|
180 |
Article.objects.filter(reporter__id__exact=self.r.id), |
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Added buildout stuff and made changes accordingly
Nishanth Amuluru <nishanth@fossee.in>
parents:
diff
changeset
|
181 |
[ |
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Nishanth Amuluru <nishanth@fossee.in>
parents:
diff
changeset
|
182 |
"<Article: John's second story>", |
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Added buildout stuff and made changes accordingly
Nishanth Amuluru <nishanth@fossee.in>
parents:
diff
changeset
|
183 |
"<Article: This is a test>", |
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Added buildout stuff and made changes accordingly
Nishanth Amuluru <nishanth@fossee.in>
parents:
diff
changeset
|
184 |
]) |
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Added buildout stuff and made changes accordingly
Nishanth Amuluru <nishanth@fossee.in>
parents:
diff
changeset
|
185 |
self.assertQuerysetEqual( |
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Added buildout stuff and made changes accordingly
Nishanth Amuluru <nishanth@fossee.in>
parents:
diff
changeset
|
186 |
Article.objects.filter(reporter__pk=self.r.id), |
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Added buildout stuff and made changes accordingly
Nishanth Amuluru <nishanth@fossee.in>
parents:
diff
changeset
|
187 |
[ |
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Nishanth Amuluru <nishanth@fossee.in>
parents:
diff
changeset
|
188 |
"<Article: John's second story>", |
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Added buildout stuff and made changes accordingly
Nishanth Amuluru <nishanth@fossee.in>
parents:
diff
changeset
|
189 |
"<Article: This is a test>", |
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Nishanth Amuluru <nishanth@fossee.in>
parents:
diff
changeset
|
190 |
]) |
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Added buildout stuff and made changes accordingly
Nishanth Amuluru <nishanth@fossee.in>
parents:
diff
changeset
|
191 |
self.assertQuerysetEqual( |
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Added buildout stuff and made changes accordingly
Nishanth Amuluru <nishanth@fossee.in>
parents:
diff
changeset
|
192 |
Article.objects.filter(reporter=self.r.id), |
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Added buildout stuff and made changes accordingly
Nishanth Amuluru <nishanth@fossee.in>
parents:
diff
changeset
|
193 |
[ |
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Nishanth Amuluru <nishanth@fossee.in>
parents:
diff
changeset
|
194 |
"<Article: John's second story>", |
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Added buildout stuff and made changes accordingly
Nishanth Amuluru <nishanth@fossee.in>
parents:
diff
changeset
|
195 |
"<Article: This is a test>", |
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Nishanth Amuluru <nishanth@fossee.in>
parents:
diff
changeset
|
196 |
]) |
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Added buildout stuff and made changes accordingly
Nishanth Amuluru <nishanth@fossee.in>
parents:
diff
changeset
|
197 |
self.assertQuerysetEqual( |
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Added buildout stuff and made changes accordingly
Nishanth Amuluru <nishanth@fossee.in>
parents:
diff
changeset
|
198 |
Article.objects.filter(reporter=self.r), |
c6bca38c1cbf
Added buildout stuff and made changes accordingly
Nishanth Amuluru <nishanth@fossee.in>
parents:
diff
changeset
|
199 |
[ |
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Nishanth Amuluru <nishanth@fossee.in>
parents:
diff
changeset
|
200 |
"<Article: John's second story>", |
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Nishanth Amuluru <nishanth@fossee.in>
parents:
diff
changeset
|
201 |
"<Article: This is a test>", |
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Nishanth Amuluru <nishanth@fossee.in>
parents:
diff
changeset
|
202 |
]) |
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Nishanth Amuluru <nishanth@fossee.in>
parents:
diff
changeset
|
203 |
self.assertQuerysetEqual( |
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Added buildout stuff and made changes accordingly
Nishanth Amuluru <nishanth@fossee.in>
parents:
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changeset
|
204 |
Article.objects.filter(reporter__in=[self.r.id,self.r2.id]).distinct(), |
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Nishanth Amuluru <nishanth@fossee.in>
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changeset
|
205 |
[ |
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Nishanth Amuluru <nishanth@fossee.in>
parents:
diff
changeset
|
206 |
"<Article: John's second story>", |
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Nishanth Amuluru <nishanth@fossee.in>
parents:
diff
changeset
|
207 |
"<Article: Paul's story>", |
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Nishanth Amuluru <nishanth@fossee.in>
parents:
diff
changeset
|
208 |
"<Article: This is a test>", |
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Nishanth Amuluru <nishanth@fossee.in>
parents:
diff
changeset
|
209 |
]) |
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Added buildout stuff and made changes accordingly
Nishanth Amuluru <nishanth@fossee.in>
parents:
diff
changeset
|
210 |
self.assertQuerysetEqual( |
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Added buildout stuff and made changes accordingly
Nishanth Amuluru <nishanth@fossee.in>
parents:
diff
changeset
|
211 |
Article.objects.filter(reporter__in=[self.r,self.r2]).distinct(), |
c6bca38c1cbf
Added buildout stuff and made changes accordingly
Nishanth Amuluru <nishanth@fossee.in>
parents:
diff
changeset
|
212 |
[ |
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Nishanth Amuluru <nishanth@fossee.in>
parents:
diff
changeset
|
213 |
"<Article: John's second story>", |
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Nishanth Amuluru <nishanth@fossee.in>
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changeset
|
214 |
"<Article: Paul's story>", |
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Nishanth Amuluru <nishanth@fossee.in>
parents:
diff
changeset
|
215 |
"<Article: This is a test>", |
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Nishanth Amuluru <nishanth@fossee.in>
parents:
diff
changeset
|
216 |
]) |
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Nishanth Amuluru <nishanth@fossee.in>
parents:
diff
changeset
|
217 |
# You can also use a queryset instead of a literal list of instances. |
c6bca38c1cbf
Added buildout stuff and made changes accordingly
Nishanth Amuluru <nishanth@fossee.in>
parents:
diff
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|
218 |
# The queryset must be reduced to a list of values using values(), |
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Nishanth Amuluru <nishanth@fossee.in>
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|
219 |
# then converted into a query |
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Nishanth Amuluru <nishanth@fossee.in>
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|
220 |
self.assertQuerysetEqual( |
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Nishanth Amuluru <nishanth@fossee.in>
parents:
diff
changeset
|
221 |
Article.objects.filter( |
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Nishanth Amuluru <nishanth@fossee.in>
parents:
diff
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|
222 |
reporter__in=Reporter.objects.filter(first_name='John').values('pk').query |
c6bca38c1cbf
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Nishanth Amuluru <nishanth@fossee.in>
parents:
diff
changeset
|
223 |
).distinct(), |
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Added buildout stuff and made changes accordingly
Nishanth Amuluru <nishanth@fossee.in>
parents:
diff
changeset
|
224 |
[ |
c6bca38c1cbf
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Nishanth Amuluru <nishanth@fossee.in>
parents:
diff
changeset
|
225 |
"<Article: John's second story>", |
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Nishanth Amuluru <nishanth@fossee.in>
parents:
diff
changeset
|
226 |
"<Article: This is a test>", |
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Added buildout stuff and made changes accordingly
Nishanth Amuluru <nishanth@fossee.in>
parents:
diff
changeset
|
227 |
]) |
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|
228 |
# You need two underscores between "reporter" and "id" -- not one. |
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229 |
self.assertRaises(FieldError, Article.objects.filter, reporter_id__exact=self.r.id) |
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|
230 |
# You need to specify a comparison clause |
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231 |
self.assertRaises(FieldError, Article.objects.filter, reporter_id=self.r.id) |
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|
232 |
|
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|
233 |
def test_reverse_selects(self): |
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|
234 |
a3 = Article.objects.create(id=None, headline="Third article", |
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|
235 |
pub_date=datetime(2005, 7, 27), reporter_id=self.r.id) |
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|
236 |
a4 = Article.objects.create(id=None, headline="Fourth article", |
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|
237 |
pub_date=datetime(2005, 7, 27), reporter_id=str(self.r.id)) |
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|
238 |
# Reporters can be queried |
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|
239 |
self.assertQuerysetEqual(Reporter.objects.filter(id__exact=self.r.id), |
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|
240 |
["<Reporter: John Smith>"]) |
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|
241 |
self.assertQuerysetEqual(Reporter.objects.filter(pk=self.r.id), |
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242 |
["<Reporter: John Smith>"]) |
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|
243 |
self.assertQuerysetEqual(Reporter.objects.filter(first_name__startswith='John'), |
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244 |
["<Reporter: John Smith>"]) |
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|
245 |
# Reporters can query in opposite direction of ForeignKey definition |
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|
246 |
self.assertQuerysetEqual(Reporter.objects.filter(article__id__exact=self.a.id), |
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247 |
["<Reporter: John Smith>"]) |
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248 |
self.assertQuerysetEqual(Reporter.objects.filter(article__pk=self.a.id), |
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249 |
["<Reporter: John Smith>"]) |
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|
250 |
self.assertQuerysetEqual(Reporter.objects.filter(article=self.a.id), |
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251 |
["<Reporter: John Smith>"]) |
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252 |
self.assertQuerysetEqual(Reporter.objects.filter(article=self.a), |
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253 |
["<Reporter: John Smith>"]) |
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|
254 |
self.assertQuerysetEqual( |
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|
255 |
Reporter.objects.filter(article__in=[self.a.id,a3.id]).distinct(), |
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|
256 |
["<Reporter: John Smith>"]) |
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|
257 |
self.assertQuerysetEqual( |
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258 |
Reporter.objects.filter(article__in=[self.a.id,a3]).distinct(), |
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|
259 |
["<Reporter: John Smith>"]) |
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|
260 |
self.assertQuerysetEqual( |
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|
261 |
Reporter.objects.filter(article__in=[self.a,a3]).distinct(), |
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|
262 |
["<Reporter: John Smith>"]) |
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|
263 |
self.assertQuerysetEqual( |
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|
264 |
Reporter.objects.filter(article__headline__startswith='T'), |
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|
265 |
["<Reporter: John Smith>", "<Reporter: John Smith>"]) |
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|
266 |
self.assertQuerysetEqual( |
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|
267 |
Reporter.objects.filter(article__headline__startswith='T').distinct(), |
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|
268 |
["<Reporter: John Smith>"]) |
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|
269 |
|
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|
270 |
# Counting in the opposite direction works in conjunction with distinct() |
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|
271 |
self.assertEqual( |
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272 |
Reporter.objects.filter(article__headline__startswith='T').count(), 2) |
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|
273 |
self.assertEqual( |
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|
274 |
Reporter.objects.filter(article__headline__startswith='T').distinct().count(), 1) |
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|
275 |
|
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|
276 |
# Queries can go round in circles. |
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|
277 |
self.assertQuerysetEqual( |
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|
278 |
Reporter.objects.filter(article__reporter__first_name__startswith='John'), |
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|
279 |
[ |
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|
280 |
"<Reporter: John Smith>", |
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|
281 |
"<Reporter: John Smith>", |
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|
282 |
"<Reporter: John Smith>", |
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|
283 |
]) |
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|
284 |
self.assertQuerysetEqual( |
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|
285 |
Reporter.objects.filter(article__reporter__first_name__startswith='John').distinct(), |
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|
286 |
["<Reporter: John Smith>"]) |
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|
287 |
self.assertQuerysetEqual( |
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|
288 |
Reporter.objects.filter(article__reporter__exact=self.r).distinct(), |
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changeset
|
289 |
["<Reporter: John Smith>"]) |
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changeset
|
290 |
|
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|
291 |
# Check that implied __exact also works. |
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|
292 |
self.assertQuerysetEqual( |
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|
293 |
Reporter.objects.filter(article__reporter=self.r).distinct(), |
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changeset
|
294 |
["<Reporter: John Smith>"]) |
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changeset
|
295 |
|
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changeset
|
296 |
# It's possible to use values() calls across many-to-one relations. |
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|
297 |
# (Note, too, that we clear the ordering here so as not to drag the |
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|
298 |
# 'headline' field into the columns being used to determine uniqueness) |
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|
299 |
d = {'reporter__first_name': u'John', 'reporter__last_name': u'Smith'} |
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|
300 |
self.assertEqual([d], |
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|
301 |
list(Article.objects.filter(reporter=self.r).distinct().order_by() |
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|
302 |
.values('reporter__first_name', 'reporter__last_name'))) |
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changeset
|
303 |
|
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|
304 |
def test_select_related(self): |
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|
305 |
# Check that Article.objects.select_related().dates() works properly when |
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|
306 |
# there are multiple Articles with the same date but different foreign-key |
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|
307 |
# objects (Reporters). |
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|
308 |
r1 = Reporter.objects.create(first_name='Mike', last_name='Royko', email='royko@suntimes.com') |
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|
309 |
r2 = Reporter.objects.create(first_name='John', last_name='Kass', email='jkass@tribune.com') |
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|
310 |
a1 = Article.objects.create(headline='First', pub_date=datetime(1980, 4, 23), reporter=r1) |
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|
311 |
a2 = Article.objects.create(headline='Second', pub_date=datetime(1980, 4, 23), reporter=r2) |
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|
312 |
self.assertEqual(list(Article.objects.select_related().dates('pub_date', 'day')), |
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changeset
|
313 |
[ |
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changeset
|
314 |
datetime(1980, 4, 23, 0, 0), |
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changeset
|
315 |
datetime(2005, 7, 27, 0, 0), |
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diff
changeset
|
316 |
]) |
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changeset
|
317 |
self.assertEqual(list(Article.objects.select_related().dates('pub_date', 'month')), |
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changeset
|
318 |
[ |
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changeset
|
319 |
datetime(1980, 4, 1, 0, 0), |
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changeset
|
320 |
datetime(2005, 7, 1, 0, 0), |
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diff
changeset
|
321 |
]) |
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changeset
|
322 |
self.assertEqual(list(Article.objects.select_related().dates('pub_date', 'year')), |
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changeset
|
323 |
[ |
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changeset
|
324 |
datetime(1980, 1, 1, 0, 0), |
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changeset
|
325 |
datetime(2005, 1, 1, 0, 0), |
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diff
changeset
|
326 |
]) |
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Nishanth Amuluru <nishanth@fossee.in>
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changeset
|
327 |
|
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|
328 |
def test_delete(self): |
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|
329 |
new_article = self.r.article_set.create(headline="John's second story", |
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|
330 |
pub_date=datetime(2005, 7, 29)) |
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diff
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|
331 |
new_article2 = self.r2.article_set.create(headline="Paul's story", |
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diff
changeset
|
332 |
pub_date=datetime(2006, 1, 17)) |
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parents:
diff
changeset
|
333 |
a3 = Article.objects.create(id=None, headline="Third article", |
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diff
changeset
|
334 |
pub_date=datetime(2005, 7, 27), reporter_id=self.r.id) |
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diff
changeset
|
335 |
a4 = Article.objects.create(id=None, headline="Fourth article", |
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diff
changeset
|
336 |
pub_date=datetime(2005, 7, 27), reporter_id=str(self.r.id)) |
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# If you delete a reporter, his articles will be deleted. |
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self.assertQuerysetEqual(Article.objects.all(), |
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339 |
[ |
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340 |
"<Article: Fourth article>", |
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341 |
"<Article: John's second story>", |
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342 |
"<Article: Paul's story>", |
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343 |
"<Article: Third article>", |
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344 |
"<Article: This is a test>", |
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345 |
]) |
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self.assertQuerysetEqual(Reporter.objects.order_by('first_name'), |
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347 |
[ |
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348 |
"<Reporter: John Smith>", |
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349 |
"<Reporter: Paul Jones>", |
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350 |
]) |
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351 |
self.r2.delete() |
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352 |
self.assertQuerysetEqual(Article.objects.all(), |
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353 |
[ |
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354 |
"<Article: Fourth article>", |
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355 |
"<Article: John's second story>", |
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356 |
"<Article: Third article>", |
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357 |
"<Article: This is a test>", |
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358 |
]) |
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359 |
self.assertQuerysetEqual(Reporter.objects.order_by('first_name'), |
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360 |
["<Reporter: John Smith>"]) |
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361 |
# You can delete using a JOIN in the query. |
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Nishanth Amuluru <nishanth@fossee.in>
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362 |
Reporter.objects.filter(article__headline__startswith='This').delete() |
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363 |
self.assertQuerysetEqual(Reporter.objects.all(), []) |
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364 |
self.assertQuerysetEqual(Article.objects.all(), []) |
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365 |
|
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366 |
def test_regression_12876(self): |
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367 |
# Regression for #12876 -- Model methods that include queries that |
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368 |
# recursive don't cause recursion depth problems under deepcopy. |
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369 |
self.r.cached_query = Article.objects.filter(reporter=self.r) |
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370 |
from copy import deepcopy |
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371 |
self.assertEqual(repr(deepcopy(self.r)), "<Reporter: John Smith>") |