Created
July 31, 2012 00:36
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Mongoose schema inheritance example
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"use strict"; | |
var mongoose = require('mongoose'), | |
Schema = mongoose.Schema; | |
// ==== connect to database ==== | |
mongoose.connect('mongodb://localhost/temp'); | |
// ==== base object to be inherited ==== | |
var baseObj = { | |
a : Number, | |
b : String | |
}; | |
// ==== inherit objects as needed at runtime ==== | |
// inherited objects | |
var objA = Object.create(baseObj); | |
objA.c = [Number]; | |
var objB = Object.create(baseObj); | |
objB.c = String; | |
// create schema and model | |
var SchemaA = new Schema(objA), | |
modelA = mongoose.model('modelA', SchemaA, 'collectionAB'); | |
var SchemaB = new Schema(objB), | |
modelB = mongoose.model('modelB', SchemaB, 'collectionAB'); | |
// save a record | |
var recordA = new modelA({ | |
a : 1 | |
, b : 'a' | |
, c : [1,2,3] | |
}); | |
var recordB = new modelB({ | |
a : 2 | |
, b : 'z' | |
, c : 'c' | |
}); | |
recordA.save(); | |
recordB.save(); | |
// ==== output from mongo console ==== | |
/* > db.collectionAB.find() | |
{ "a" : 1, "b" : "a", "_id" : ObjectId("501727f26a5ec8e189000001"), "c" : [ 1, 2, 3 ] } | |
{ "a" : 2, "b" : "z", "c" : "c", "_id" : ObjectId("501727f26a5ec8e189000002") } | |
*/ |
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Very helpful