我模型的相关部分:

class AnalyticRecord(models.Model):

    APP = "APP"
    WEB = "WEB"
    DASH = "DASH"

    SOURCE_CHOICES = (
        (APP, "Mobile Application"),
        (WEB, "Website"),
        (DASH, "User Dashboard"))

    user = models.ForeignKey(User, blank=True, null=True)
    event = models.ForeignKey(Event)
    source = models.CharField(max_length=25, choices=SOURCE_CHOICES)


我正在尝试运行聚合命令。它像这样正常工作:

data = event.analyticrecord_set.all().values("source").\
    annotate(label=Concat("source", Value(None), output_field=CharField()))


但是,问题是注释label返回“ APP”,“ WEB”,“ DASH”而不是实际显示值。我知道我可以正常使用get_FOO_display(),但是如何将显示值引入注释调用中?我正在寻找source字段的显示值。谢谢!

最佳答案

queryset = event.analyticrecord_set.all().values("source").\
    annotate(label=Concat("source", Value(None), output_field=CharField()))

for query in queryset:
    print(queryset.model(source=query['source']).get_source_display())


您可以尝试上述代码片段吗,希望对您有所帮助

关于python - Django queryset批注,带有选择项并尝试获取显示值的charfield,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/44087888/

10-08 23:30