貓鼬復雜查詢子文檔

Question

我需要通過Owner ， Manager或Team Member之一找到一個項目。 模式如下所示：

var project = new mongoose.Schema({
  title: { type: String, require: true },
  slug: { type: String, require: true },
  description: { type: String, require: true },
  descriptionHtml: { type: String, require: true },
  nextVanityId: { type: Number, default: 1 },
  owner: { type: ObjectId, ref: 'Member', require: true },
  teams: [{ type: ObjectId, ref: 'Team' }],
  managers: [{ type: ObjectId, ref: 'Member' }]
};

var team = new mongoose.Schema({
  name: { type: String, require: true },
  slug: { type: String, require: true },
  project:  { type: ObjectId, require: true, ref: 'Project' },
  created: { type: Date, require: true, default: Date.now },
  members: [{ type: ObjectId, default: null, ref: 'Member' }]
};

我的查詢方法如下所示：

function findByMember (member, done) {
  var id = member._id;

  Project
    .find()
    .or([
      { owner: id },
      { managers: id },
      { 'teams.members': id }
    ])
    .exec(done);
}

目前，它適用於所有者和經理，但在查詢每個團隊的成員集合時，我正在空白。 我應該使用什么？

Answer 1

為了使查詢正常工作，您可以采用兩種方式解決該問題。

解決方案1

讓您的團隊作為項目中的嵌入式文檔：

var team = new mongoose.Schema({
  name: { type: String, require: true },
  slug: { type: String, require: true },
  project:  { type: ObjectId, require: true, ref: 'Project' },
  created: { type: Date, require: true, default: Date.now },
  members: [{ type: ObjectId, default: null, ref: 'Member' }]
};

var project = new mongoose.Schema({
  title: { type: String, require: true },
  slug: { type: String, require: true },
  description: { type: String, require: true },
  descriptionHtml: { type: String, require: true },
  nextVanityId: { type: Number, default: 1 },
  owner: { type: ObjectId, ref: 'Member', require: true },
  teams: [team],
  managers: [{ type: ObjectId, ref: 'Member' }]
};

這樣，您的項目文檔將具有團隊信息，而teams.members很有意義。

解決方案2

對Team數據進行非規范化以僅嵌入相關信息：

var team = new mongoose.Schema({
  name: { type: String, require: true },
  slug: { type: String, require: true },
  project:  { type: ObjectId, require: true, ref: 'Project' },
  created: { type: Date, require: true, default: Date.now },
  members: [{ type: ObjectId, default: null, ref: 'Member' }]
};

var project = new mongoose.Schema({
  title: { type: String, require: true },
  slug: { type: String, require: true },
  description: { type: String, require: true },
  descriptionHtml: { type: String, require: true },
  nextVanityId: { type: Number, default: 1 },
  owner: { type: ObjectId, ref: 'Member', require: true },
  teams: [{
    _id: { type: ObjectId, ref: 'Team' },
    members: [{ type: ObjectId, default: null, ref: 'Member' }]
  }],
  managers: [{ type: ObjectId, ref: 'Member' }]
};

在第二種方法中，您需要使Team文檔和非規范化數據保持同步。