mongoose 怎么 populate 别的集合的子文档?

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这是一个创建于 3850 天前的主题，其中的信息可能已经有所发展或是发生改变。

I can't find it with populate, o.B is a objectId,o.B.name is undefined.

BSchema is a subdocument of ASchema, CSchema has a ref connection of BSchema.

I want to find all CSchema which CSchema's name is "c_xxx", and shows CSchema's B's name and its A's name.

Like this result: {CName:"c_xxx",BName:"b_xxx",AName:"a_xxx"}

cschema

populate

undefined.

2 条回复 • 2014-06-13 23:21:27 +08:00

shuson

2014-06-13 16:42:57 +08:00

when populate fields, it only works if there is ref to children from the parent schema

gancl

2014-06-13 23:21:27 +08:00

@shuson 看来这种情况用不了populate,只能手动一条条查了.
怎么等待CSchema.find({ 执行完毕? 我再手动将结果构造成json