Fixed #13407 -- Corrected verbose names for autogenerated m2m models, and cleaned up the default form prefix when an autogenerated m2m through model is used in a formset. Thanks to carljm for the report.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@13029 bcc190cf-cafb-0310-a4f2-bffc1f526a37

django/db/models/fields/related.py

@@ -969,7 +969,9 @@ def create_many_to_many_intermediary_model(field, klass):
         'managed': managed,
         'auto_created': klass,
         'app_label': klass._meta.app_label,
-        'unique_together': (from_, to)
+        'unique_together': (from_, to),
+        'verbose_name': _('%(from)s-%(to)s relationship') % {'from': from_, 'to': to},
+        'verbose_name_plural': _('%(from)s-%(to)s relationships') % {'from': from_, 'to': to},
     })
     # Construct and return the new class.
     return type(name, (models.Model,), {

django/forms/models.py

@@ -718,7 +718,7 @@ class BaseInlineFormSet(BaseModelFormSet):
     #@classmethod
     def get_default_prefix(cls):
         from django.db.models.fields.related import RelatedObject
-        return RelatedObject(cls.fk.rel.to, cls.model, cls.fk).get_accessor_name()
+        return RelatedObject(cls.fk.rel.to, cls.model, cls.fk).get_accessor_name().replace('+','')
     get_default_prefix = classmethod(get_default_prefix)
 
     def save_new(self, form, commit=True):

tests/regressiontests/admin_inlines/models.py

@@ -30,6 +30,20 @@ class Child(models.Model):
     def __unicode__(self):
         return u'I am %s, a child of %s' % (self.name, self.parent)
 
+class Book(models.Model):
+    name = models.CharField(max_length=50)
+
+class Author(models.Model):
+    name = models.CharField(max_length=50)
+    books = models.ManyToManyField(Book)
+
+class BookInline(admin.TabularInline):
+    model = Author.books.through
+
+class AuthorAdmin(admin.ModelAdmin):
+    inlines = [BookInline]
+
+admin.site.register(Author, AuthorAdmin)
 
 class Holder(models.Model):
     dummy = models.IntegerField()

tests/regressiontests/admin_inlines/tests.py

@@ -38,6 +38,16 @@ class TestInline(TestCase):
                                    % holder.id)
         self.assertContains(response, '<label>Inner readonly label:</label>')
 
+    def test_many_to_many_inlines(self):
+        "Autogenerated many-to-many inlines are displayed correctly (#13407)"
+        response = self.client.get('/test_admin/admin/admin_inlines/author/add/')
+        # The heading for the m2m inline block uses the right text
+        self.assertContains(response, '<h2>Author-book relationships</h2>')
+        # The "add another" label is correct
+        self.assertContains(response, 'Add another Author-Book Relationship')
+        # The '+' is dropped from the autogenerated form prefix (Author_books+)
+        self.assertContains(response, 'id="id_Author_books-TOTAL_FORMS"')
+
 
 class TestInlineMedia(TestCase):
     fixtures = ['admin-views-users.xml']