Question

将我的Access应用程序迁移到Python / Django。现有数据库，所以使用Inspectdb创建模型，我根据需要进行调整，直到它们匹配实际数据库。所有模型都标记为Meta中的Manage = False。

现在我想在父表中添加多对多字段，并且遇到麻烦。模特片段：

class Federalprograms(models.Model):
    fedpgmid = models.IntegerField(db_column='FedPgmID', primary_key=True)  # Field name made lowercase.
    fedpgmname = models.CharField(db_column='FedPgmName', max_length=50)  # Field name made lowercase.
    active = models.IntegerField(db_column='Active', blank=True, null=True, default=0)  # Field name made lowercase.
    seq = models.IntegerField(db_column='Seq', blank=True, null=True, default=0)  # Field name made lowercase.
    loanfee = models.DecimalField(db_column='LoanFee', max_digits=10, decimal_places=5, blank=True, null=True, default=0.00000)  # Field name made lowercase.

class Reports(models.Model):
    reportname = models.CharField(db_column='ReportName', primary_key=True, max_length=50)  # Field name made lowercase.
    reporttitle = models.CharField(db_column='ReportTitle', max_length=50, blank=True, null=True)  # Field name made lowercase.
    datefielddefault = models.IntegerField(db_column='DateFieldDefault', blank=True, null=True)  # Field name made lowercase.
    startdatedefault = models.CharField(db_column='StartDateDefault', max_length=15, blank=True, null=True)  # Field name made lowercase.
    enddatedefault = models.CharField(db_column='EndDateDefault', max_length=15, blank=True, null=True)  # Field name made lowercase.
    detailsdefault = models.BooleanField(db_column='DetailsDefault', max_length=1, blank=True, null=False)  # Field name made lowercase.
    totalsdefault = models.BooleanField(db_column='TotalsDefault', max_length=1, blank=True, null=False)  # Field name made lowercase.
    askfedpgm = models.BooleanField(db_column='AskFedPgm', blank=True, null=False, default=0)  # Field name made lowercase.
    fedpgms = models.ManyToManyField('Federalprograms')

所以我添加了“fedpgms”字段，然后确实makemigrations似乎工作，然后进行迁移，这似乎也有效。但是，没有创建连接表，reports_fedpgms，当我运行应用程序时，我收到以下错误：

ProgrammingError at /admin/fc6/reports/StatusReport/change/
(1146, "Table 'fc5.reports_fedpgms' doesn't exist")

我尝试使Reports表manage = True，认为这可能会触发连接表的创建，但这只会在迁移期间导致错误，并说“Reports表已存在”。

我对这个Django事情有点新鲜，我做错了什么？

...谢谢

Answer 1

将其更改为

fedpgms = models.ManyToManyField(Federalprograms)

Django麻烦创建ManyToMany字段

1 个答案: