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Diffstat (limited to 'patchwork/migrations/0042_add_cover_model.py')
| -rw-r--r-- | patchwork/migrations/0042_add_cover_model.py | 247 |
1 files changed, 247 insertions, 0 deletions
diff --git a/patchwork/migrations/0042_add_cover_model.py b/patchwork/migrations/0042_add_cover_model.py new file mode 100644 index 0000000..53196c1 --- /dev/null +++ b/patchwork/migrations/0042_add_cover_model.py @@ -0,0 +1,247 @@ +import datetime + +from django.db import migrations, models +import django.db.models.deletion +import patchwork.models + + +class Migration(migrations.Migration): + + dependencies = [ + ('patchwork', '0041_python3'), + ] + + operations = [ + # create a new, separate cover (letter) model + + migrations.CreateModel( + name='Cover', + fields=[ + ( + 'id', + models.AutoField( + auto_created=True, + primary_key=True, + serialize=False, + verbose_name='ID', + ), + ), + ('msgid', models.CharField(max_length=255)), + ( + 'date', + models.DateTimeField(default=datetime.datetime.utcnow), + ), + ('headers', models.TextField(blank=True)), + ('content', models.TextField(blank=True, null=True)), + ('name', models.CharField(max_length=255)), + ( + 'project', + models.ForeignKey( + on_delete=django.db.models.deletion.CASCADE, + to='patchwork.Project', + ), + ), + ( + 'submitter', + models.ForeignKey( + on_delete=django.db.models.deletion.CASCADE, + to='patchwork.Person', + ), + ), + ], + options={'ordering': ['date']}, + bases=(patchwork.models.FilenameMixin, models.Model), + ), + migrations.AddIndex( + model_name='cover', + index=models.Index( + fields=['date', 'project', 'submitter', 'name'], + name='cover_covering_idx', + ), + ), + migrations.AlterUniqueTogether( + name='cover', unique_together=set([('msgid', 'project')]), + ), + + # create a new, separate cover (letter) comment model + + migrations.CreateModel( + name='CoverComment', + fields=[ + ( + 'id', + models.AutoField( + auto_created=True, + primary_key=True, + serialize=False, + verbose_name='ID', + ), + ), + ('msgid', models.CharField(max_length=255)), + ( + 'date', + models.DateTimeField(default=datetime.datetime.utcnow), + ), + ('headers', models.TextField(blank=True)), + ('content', models.TextField(blank=True, null=True)), + ( + 'cover', + models.ForeignKey( + on_delete=django.db.models.deletion.CASCADE, + related_name='comments', + related_query_name='comment', + to='patchwork.Cover', + ), + ), + ( + 'submitter', + models.ForeignKey( + on_delete=django.db.models.deletion.CASCADE, + to='patchwork.Person', + ), + ), + ], + options={'ordering': ['date']}, + ), + migrations.AddIndex( + model_name='covercomment', + index=models.Index( + fields=['cover', 'date'], name='cover_date_idx' + ), + ), + migrations.AlterUniqueTogether( + name='covercomment', unique_together=set([('msgid', 'cover')]), + ), + + # copy all entries from the 'CoverLetter' model to the new 'Cover' + # model; note that it's not possible to reverse this since we can't + # guarantee IDs will be unique after the split + + migrations.RunSQL( + """ + INSERT INTO patchwork_cover + (id, msgid, name, date, headers, project_id, submitter_id, + content) + SELECT s.id, s.msgid, s.name, s.date, s.headers, s.project_id, + s.submitter_id, s.content + FROM patchwork_coverletter c + INNER JOIN patchwork_submission s ON s.id = c.submission_ptr_id + """, + None, + ), + + # copy all 'CoverLetter'-related comments to the new 'CoverComment' + # table; as above, this is non-reversible + + migrations.RunSQL( + """ + INSERT INTO patchwork_covercomment + (id, msgid, date, headers, content, cover_id, submitter_id) + SELECT c.id, c.msgid, c.date, c.headers, c.content, + c.submission_id, c.submitter_id + FROM patchwork_comment c + INNER JOIN patchwork_coverletter p + ON p.submission_ptr_id = c.submission_id + """, + None, + ), + + # update all references to the 'CoverLetter' model to point to the new + # 'Cover' model instead + + migrations.AlterField( + model_name='event', + name='cover', + field=models.ForeignKey( + blank=True, + help_text='The cover letter that this event was created for.', + null=True, + on_delete=django.db.models.deletion.CASCADE, + related_name='+', + to='patchwork.Cover', + ), + ), + migrations.AlterField( + model_name='series', + name='cover_letter', + field=models.OneToOneField( + null=True, + on_delete=django.db.models.deletion.CASCADE, + related_name='series', + to='patchwork.Cover' + ), + ), + + # remove all the old 'CoverLetter'-related entries from the 'Comment' + # table + + migrations.RunSQL( + """ + DELETE patchwork_comment FROM + patchwork_comment + INNER JOIN patchwork_coverletter + ON patchwork_coverletter.submission_ptr_id = patchwork_comment.submission_id + """, # noqa + None + ), + + # delete the old 'CoverLetter' model + + migrations.DeleteModel( + name='CoverLetter', + ), + + # rename the 'Comment.submission' field to 'Comment.patch'; note our + # use of 'AlterField' before and after to work around bug #31335 + # + # https://code.djangoproject.com/ticket/31335 + + migrations.AlterField( + model_name='comment', + name='submission', + field=models.ForeignKey( + db_constraint=False, + on_delete=django.db.models.deletion.CASCADE, + related_name='comments', + related_query_name='comment', + to='patchwork.Submission', + ), + ), + migrations.RemoveIndex( + model_name='comment', + name='submission_date_idx', + ), + migrations.RenameField( + model_name='comment', + old_name='submission', + new_name='patch', + ), + migrations.AlterUniqueTogether( + name='comment', + unique_together=set([('msgid', 'patch')]), + ), + migrations.AddIndex( + model_name='comment', + index=models.Index( + fields=['patch', 'date'], + name='patch_date_idx', + ), + ), + migrations.AlterField( + model_name='comment', + name='patch', + field=models.ForeignKey( + on_delete=django.db.models.deletion.CASCADE, + related_name='comments', + related_query_name='comment', + to='patchwork.Submission', + ), + ), + + # rename the 'Comment' model to 'PatchComment' + + migrations.RenameModel( + old_name='Comment', + new_name='PatchComment', + ), + ] |