Django 在 Admin 中显示 ForeignKey 字段

Question

我正在使用 Python(3.7) 和 Django(3) 开发一个项目，其中我已经实现了一些模型。 其中之一是ReportsModel ，它具有其他模型的ForeignKey字段。 现在我想在ReportsModel admin 中显示其他 model 数据。

这是我到目前为止所尝试的：来自models.py ：

class ReportsModel(models.Model):
    cdr_report = models.ForeignKey(CurrencyDistributionModel,
                                   on_delete=models.CASCADE, null=True, default=None)
    cme_report = models.ForeignKey(CurrencyManagementExpenditureModel,
                                   on_delete=models.CASCADE, null=True, default=None)
    cps_report = models.ForeignKey(CurrencyProcessingStorageModel,
                                   on_delete=models.CASCADE, null=True, default=None)
    cma_report = models.ForeignKey(CurrencyManagementAssetsModel,
                                   on_delete=models.CASCADE, null=True, default=None)

    def __str__(self):
        if self.cdr_report is not None:
            return self.cdr_report.RequestId
        elif self.cme_report is not None:
            return self.cme_report.RequestId
        elif self.cps_report is not None:
            return self.cps_report.RequestId
        elif self.cma_report is not None:
            return self.cma_report.RequestId

要在 admin 中显示ForeignKey字段，我使用django_reverse_admin package，这里我是如何做到的：来自admin.py ：

class ReportAdmin(ReverseModelAdmin):
    report = None
    if ReportsModel.cdr_report is not None:
        report = 'cdr_report'
    elif ReportsModel.cme_report is not None:
        report = 'cme_report'
    elif ReportsModel.cps_report is not None:
        report = 'cps_report'
    elif ReportsModel.cma_report is not None:
        report = 'cma_report'
    search_fields = ['name']
    inline_reverse = [report]
    inline_type = 'stacked'


admin.site.register(ReportsModel, ReportAdmin)

现在在管理员中，它仅适用于cdr_report ，当我添加类型为cme_report的报告时，我得到了RequestField正确，但cme_report字段为空。

如何根据条件显示Inline Admin ？

Answer 1

class ReportAdmin(admin.ModelAdmin):
    list_display =  ("id", "someVariable" )

    def someVariable(self, obj):
        # do your logic, query or just return FK model data
        return obj.CurrencyDistributionModel.<WhateverIsYourField>


admin.site.register(ReportsModel, ReportAdmin):