[英]Update MongoDB collection with values from an array
我需要使用數組中的值更新 MongoDB 集合中的所有文檔。
例如,我在 mongo 中有以下架構中的文檔:
{
"key":"value",
"key2":"value2"
}
我有一個數組:["test","test2"]
我想通過數組創建一個迭代器,因此集合中所有文檔中的“keyN”鍵都更新為“test”或“test2”
{
"key":"value",
"key2":"value2",
"keyN":"test"
}
{
"key":"value",
"key2":"value2",
"keyN":"test2"
}
{
"key":"value",
"key2":"value2",
"keyN":"test"
}
我該怎么做呢? 我嘗試使用 forEach,但我無法找出在數組上創建迭代器的方法。
不確定這是否是您要查找的內容...這里是使用 mongoose 模式而不是實際的 mongodb 文檔進行的測試。
將答案標記為正確或讓我知道測試/代碼是否需要任何改進。
摩卡測試文件
var expect = require('chai').expect,mongooseMock = require('mongoose-
mock'),proxyquire=require('proxyquire'),
sinon = require('sinon'), chai=require('chai'),sinonChai = require("sinon-chai");chai.use(sinonChai);
var AIterator;
describe('model', function() {
beforeEach(function (done) {
AIterator = proxyquire('./ArrayIterator', {'mongoose': mongooseMock}); done();
});
it("should iterate the array",function(done){
setTimeout(done, 15000);
var callback = sinon.spy();
var aIterator =[];
aIterator[0]= AIterator.create({"key":"value1","key2":"value2","keyN":"value3"}, callback);
aIterator[1]= AIterator.create({"key":"value4","key2":"value5","keyN":"value6"}, callback);
aIterator[2]= AIterator.create({"key":"value7","key2":"value8","keyN":"value9"}, callback);
var x=0;
aIterator.forEach(function(element) {
if (element.keyN=="value9")
{
element.keyN="test";
}
}, this);
expect(aIterator[2].keyN).equals("value3");
done();
});
});
代碼文件
var mongoose = require('mongoose');
var Schema = mongoose.Schema;
var arraySchema = new Schema({
key:String,
key2:String,
keyN:String
});
var NewArray = new mongoose.Schema(arraySchema);
NewArray.statics.create = function (params, callback) {
var newUpdate = new NewArray(params);
newUpdate.save(function(err, result) {
callback(err, result);
});
return newUpdate;
};
var ArrayIterator = mongoose.model('Model', NewArray);
module.exports = ArrayIterator;
或者,
運行輸入數組中的值的另一個測試,如果這是你的意思:
it("should iterate the array",function(done){
setTimeout(done, 15000);
var callback = sinon.spy();
var testArray=["test","test1"];
var aIterator =[];
aIterator[0]= AIterator.create({"key":"value1","key2":"value2","keyN":"value3"}, callback);
aIterator[1]= AIterator.create({"key":"value4","key2":"value5","keyN":"value6"}, callback);
aIterator[2]= AIterator.create({"key":"value7","key2":"value8","keyN":"value9"}, callback);
var x=0;
testArray.forEach(function(element){
if (element=="test")
{
aIterator.forEach(function(element1) {
if (element1.keyN=="value9")
{
element1.keyN=element;
}
}, this);
}
},this);
expect(aIterator[2].keyN).equals("value3");
done();
});
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