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POdjango loading data from fixture after backward migration / loaddata is using model schema not database schema
 

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  1. POdjango loading data from fixture after backward migration / loaddata is using model schema not database schema
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    <p>I have recenty came across a problem while importing older data than my current model schema. Flow which I use and lead to error:</p> <ul> <li>dumpdata with python manage.py dumpdata -> 0002</li> <li>make some modifications to model</li> <li>generate migration with python manage.py schemamigration app_name --auto -> 0003</li> <li>run migration</li> <li>play with database</li> <li>migrate to 0002</li> <li>loaddata generate SQL in which I have current (migration 0003) fields, and cause failing loaddata process (mpoly is added field)</li> </ul> <blockquote> <pre><code> File "/usr/local/lib/python2.6/dist-packages/django/db/backends/postgresql_psycopg2/base.py", </code></pre> <p>line 44, in execute return self.cursor.execute(query, args) DatabaseError: column "mpoly" of relation "localization_province" does not exist LINE 1: ...e" ("id", "name", "slug", "mpoly") V...</p> </blockquote> <ul> <li>commenting changes in models.py done before 0003, make all working ok</li> </ul> <p><strong>Is there any way to avoid playing with models after backward migration if I want to loaddata?</strong></p> <p>Maybe I'm missing something really obvious...</p> <p>PS: I'm using South 7.3, Django 1.2.3 and PostgreSQL 8.4 as database backend.</p>
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