Question

我试图将多个作业分配给发票/购买，但是我遇到了问题。我错过了什么吗？这需要是多对多还是什么？

我收到以下错误：

invoices.Job.job: (fields.E304) Reverse accessor for 'Job.job' clashes with reverse accessor for 'Job.job'.
    HINT: Add or change a related_name argument to the definition for 'Job.job' or 'Job.job'.
purchases.Job.job: (fields.E304) Reverse accessor for 'Job.job' clashes with reverse accessor for 'Job.job'.
    HINT: Add or change a related_name argument to the definition for 'Job.job' or 'Job.job'.

购买/ models.py

class Purchase(models.Model):
...

class Job(models.Model):
    purchase = models.ForeignKey(Purchase)
    job = models.ForeignKey('jobs.Job')

    def __str__(self):
        return self.job

发票/ models.py

class Invoice(models.Model):
...

class Job(models.Model):
    invoice = models.ForeignKey(Invoice)
    job = models.ForeignKey('jobs.Job')

    def __str__(self):
        return self.job

Answer 1

您需要更改外键中的相关名称，并可能为了清晰起见重命名模型。

# i dont recommended ever naming 2 models the exact same way either

class PurchaseJob(models.Model):
    purchase = models.ForeignKey(Purchase, related_name='purchase_job')

class InvoiceJob(models.Model):
    invoice = models.ForeignKey(Invoice, related_name='invoice_job')

添加相关名称可以使命名约定保持干净整洁，也可以通过这种方式避免大量的Django错误。

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