815602351f
primary keys from character strings to integers, and makes corresponding code changes. This was prompted by database limitations discovered when trying to make DocAlias use a m2m document field; with 255 long strings as primary keys for Document and DocAlias this violated the MySQL database limitations. Changing the primary keys to integers should also improve efficiency. Due to the data migrations which create the new integer primary keys and adds corresponding integer foreign keys matching the previous string foreign keys in all tables having foreign keys to Document and DocAlias, some of these migrations take a long time. The total set of migrations are expected to have a runtime on the order of 2 hours. - Legacy-Id: 16237
125 lines
4 KiB
Python
125 lines
4 KiB
Python
# -*- coding: utf-8 -*-
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# Generated by Django 1.11.20 on 2019-05-20 09:53
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from __future__ import unicode_literals
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from django.db import migrations, models
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import django.db.models.deletion
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import ietf.utils.models
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class Migration(migrations.Migration):
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dependencies = [
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('doc', '0017_make_document_id_primary_key'),
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]
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operations = [
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migrations.AlterModelOptions(
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name='documentauthor',
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options={'ordering': ['document2', 'order']},
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),
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migrations.RemoveIndex(
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model_name='docevent',
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name='doc_doceven_type_43e53e_idx',
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),
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migrations.RemoveField(
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model_name='docalias',
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name='document',
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),
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migrations.RemoveField(
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model_name='docevent',
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name='doc',
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),
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migrations.RemoveField(
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model_name='dochistory',
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name='doc',
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),
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migrations.RemoveField(
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model_name='documentauthor',
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name='document',
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),
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migrations.RemoveField(
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model_name='documenturl',
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name='doc',
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),
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migrations.RemoveField(
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model_name='relateddochistory',
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name='target',
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),
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migrations.RemoveField(
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model_name='relateddocument',
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name='source',
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),
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migrations.RemoveField(
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model_name='relateddocument',
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name='target',
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),
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migrations.AddIndex(
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model_name='docevent',
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index=models.Index(fields=[b'type', b'doc2'], name='doc_doceven_type_ac7748_idx'),
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),
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# The following 9 migrations are related to the m2m fields on Document
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# Remove the intermediary model field pointing to Document.name
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migrations.RemoveField(
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model_name='documentlanguages',
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name='document',
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),
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migrations.RemoveField(
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model_name='documentstates',
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name='document',
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),
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migrations.RemoveField(
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model_name='documenttags',
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name='document',
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),
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# Rename the intermediary model field pointing to Document.id, to
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# match the implicit m2m table
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migrations.RenameField(
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model_name='documentlanguages',
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old_name='document2',
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new_name='document',
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),
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migrations.RenameField(
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model_name='documentstates',
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old_name='document2',
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new_name='document',
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),
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migrations.RenameField(
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model_name='documenttags',
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old_name='document2',
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new_name='document',
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),
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# Alter the fields to point to Document.pk instead of Document.name
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migrations.AlterField(
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model_name='documentlanguages',
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name='document',
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field=ietf.utils.models.ForeignKey(null=True, on_delete=django.db.models.deletion.CASCADE, to='doc.Document'),
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),
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migrations.AlterField(
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model_name='documentstates',
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name='document',
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field=ietf.utils.models.ForeignKey(null=True, on_delete=django.db.models.deletion.CASCADE, to='doc.Document'),
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),
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migrations.AlterField(
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model_name='documenttags',
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name='document',
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field=ietf.utils.models.ForeignKey(null=True, on_delete=django.db.models.deletion.CASCADE, to='doc.Document'),
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),
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# Remove the implicit m2m tables which point to Document.name
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migrations.RemoveField(
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model_name='document',
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name='formal_languages',
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),
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migrations.RemoveField(
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model_name='document',
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name='states',
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),
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migrations.RemoveField(
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model_name='document',
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name='tags',
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),
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# Next (in a separate migration, in order to commit the above before
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# we proceed) we'll create the implicit m2m tables again, this time
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# pointing to Document.id since that's now the primary key.
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]
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