问题描述
MongoDB 2.4 允许使用 GeoJSON 对象和大量 我想使用的整洁的函数和索引.
MongoDB 2.4 allows the use of GeoJSON objects and a slew of neat functions and indexes that I'd like to use.
它期望 GeoJSON 对象以如下格式存储:
It expects GeoJSON objects to be stored in the format like:
loc: {
type: 'Polygon',
coordinates: [[[-180.0, 10.0], [20.0, 90.0], [180.0, -5.0], [-30.0, -90.0]]]
}
因此在 Mongoose 中,人们会认为架构将被定义为:
So in Mongoose one would think the schema would be defined like:
loc: { type: 'string', coordinates: [[['number']]] }
但这存在两个问题:
有一个名为type"的字段会破坏 Mongoose 的模式解析因为它允许在表单字段中定义字段:{ type: ,索引:} 等
having a field called "type" screws up Mongoose's schema parsingbecause it allows defining fields in the form field: { type: ,index: } etc.
Mongoose 不喜欢嵌套数组.
Mongoose does not like nested arrays.
克服这个问题的一种方法是简单地使用mongoose.Schema.Types.Mixed
,但我觉得必须有更好的方法!
One way to overcome this is to simply use mongoose.Schema.Types.Mixed
, however I feel that there has got to be a better way!
推荐答案
您必须使用 Mixed 来表示数组的数组.将来有一个公开票来支持这一点.
You must used Mixed to represent arrays of arrays. There is an open ticket to support this in the future.
@nevi_me 是正确的,您必须按照他的描述声明 type
属性.
@nevi_me is correct, you must declare the type
property as he described.
这是一个要点:https://gist.github.com/aheckmann/5241574
在此处查看 mongoose 测试以获取更多想法:https://github.com/LearnBoost/mongoose/blob/master/test/model.querying.test.js#L1931
See the mongoose tests here for more ideas: https://github.com/LearnBoost/mongoose/blob/master/test/model.querying.test.js#L1931
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