Django South Postgres數據遷移問題

我正在添加一個運行模式遷移的新模型。然後用數據遷移向該表添加數據。我在Postgres數據庫上運行這個。我已經在本地成功運行SQLite數據庫，所以我猜這是一個數據庫特定的問題。在將datamigration出現的錯誤是：Django South Postgres數據遷移問題

Error in migration: app:0109_add_reservation_rates 
DatabaseError: column "rate_currency" specified more than once 
LINE 1: ...rate_currency", "rate", "reservation_id", "date", "rate_curr... 
                  ^

有沒有更好的錯誤，南南合作給我，我還沒有找到一種方法來產生南是應該運行的SQL。我檢查了schemamigration，datamigration並沒有重複字段名...

下面是實際的遷移： 0108_etc ... PY

# -*- coding: utf-8 -*- 
import datetime 
from south.db import db 
from south.v2 import SchemaMigration 
from django.db import models 


class Migration(SchemaMigration): 

    def forwards(self, orm): 
     # Adding model 'ReservationRate' 
     db.create_table(u'app_reservationrate', (
      (u'id', self.gf('django.db.models.fields.AutoField')(primary_key=True)), 
      ('created_on', self.gf('django.db.models.fields.DateTimeField')(auto_now_add=True, blank=True)), 
      ('updated_on', self.gf('django.db.models.fields.DateTimeField')(auto_now=True, blank=True)), 
      ('reservation', self.gf('django.db.models.fields.related.ForeignKey')(related_name='reservation_rates', to=orm['app.Reservation'])), 
      ('room', self.gf('django.db.models.fields.related.ForeignKey')(related_name='reservation_rates', to=orm['app.Room'])), 
      ('date', self.gf('django.db.models.fields.DateField')(db_index=True)), 
      ('rate_currency', self.gf('djmoney.models.fields.CurrencyField')(default='USD')), 
      ('rate', self.gf('djmoney.models.fields.MoneyField')(max_digits=10, decimal_places=2, default_currency='USD')), 
     )) 
     db.send_create_signal(u'app', ['ReservationRate']) 

     # Adding unique constraint on 'ReservationRate', fields ['reservation', 'room', 'date'] 
     db.create_unique(u'app_reservationrate', ['reservation_id', 'room_id', 'date'])

0109_etc ... PY

coding: utf-8 -*- 
import datetime 
from south.db import db 
from south.v2 import DataMigration 
from django.db import models 

class Migration(DataMigration): 

    def forwards(self, orm): 
     for reservation in orm.Reservation.objects.all(): 
      # Loop through some code, get rates, and dates for creating ReservationRate objects... 
      orm.ReservationRate.objects.create(reservation=reservation, room=stay.room, date=date, rate=rate)

有人有線索如何解決這個問題？

來源

2013-07-01 tzenderman

它不是數據庫特定的。它明確指出'rate_currency'出現兩次 – karthikr

這不是。現在將實際的遷移片段添加到問題中。 – tzenderman

不完全確定爲什麼，但運行./manage.py migrate -v2 app使一切工作正常。我相信這個選項應該運行遷移並輸出關於它正在運行的更多信息。

來源

2013-07-01 23:28:30 tzenderman

Django South Postgres數據遷移問題

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