[英]In mongoose how to iterate over array of ObjectId?
I try to refactor from javascript object to mongoose object. 我尝试从javascript对象重构为猫鼬对象。 I have two simple models:
我有两个简单的模型:
Candidate model: 候选模型:
var candidateSchema = new Schema({
name: String,
score: { type: Number, default: 0, min: -2, max: 2 }
});
candidateSchema.methods.updateScore = function updateScore(newScore) {
this.score = newScore;
};
Vote model containing a list of candidate: 包含候选人列表的投票模型 :
var voteSchema = new Schema({
candidates: [
{ type: Schema.Types.ObjectId, ref: 'Candidate' }
]
});
function candidateAlreadyExists(candidates, newCandidate) {
var alreadyExists = false;
candidates.forEach(function (candidate) {
if (newCandidate.name === candidate.name) {
alreadyExists = true;
}
});
return alreadyExists;
}
voteSchema.methods.addCandidate = function addCandidate(newCandidate, callback) {
var candidates = this.candidates;
if (!candidateAlreadyExists(candidates, newCandidate)) {
candidates.push(newCandidate);
}
this.save(callback);
};
I try to add a static method in my voteSchema to add a new candidate, only if it doesn't exist. 我尝试在我的表决模式中添加静态方法以添加新的候选者,只要它不存在。
I can't iterate over my candidates ( candidates.forEach(function (candidate) {
) because it's an array of _ids and not an array of javascript objects 我无法遍历我的候选对象(
candidates.forEach(function (candidate) {
),因为它是_ids数组而不是javascript对象的数组
Someone have an idea ? 有人有主意吗?
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