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原标题:Add an aggregation to a django query set

希望容易的问题。 我有一套怀疑的行动,每项行动都有时间估计。 我想得到平均时间——在问询中的所有行动中估计,这样,平均回报如下:

{{ actions.avg_time_estimate }} 

审判

actions.avg_time_estimate = actions.aggregate(Avg( time_estimate ))

但这为行动指派了一名词典。

{{ actions.avg_time_estimate.effort__avg }} 

如何将平均数拖入点? 我还希望保留该询问中的实际行动清单。

最佳回答

Try actions = actions.aggregate (avg_time_uf=Avg(时间_估计数)

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