Mongoose填充数组-Java 学习之路

我不能让mongoose填充一个对象数组 .

架构如下：

var topOrganisationsForCategorySchema = new mongoose.Schema({
  category: String,
  topOrganisations: [{
    organisation: {
      type: mongoose.Schema.Types.ObjectId,
      ref: 'organisation'
    },
    model: mongoose.Schema.Types.Mixed
  }]
});

module.exports = mongoose.model('topOrganisationsForCategory', topOrganisationsForCategorySchema);

我希望这个集合中的所有对象都填充了一组组织 .

这是我尝试过的

TopOrganisationsForCategory
  .find()
  .exec(function(err, organisation) {
    var options = {
      path: 'topOrganisations.organisation',
      model: 'organisation'
    };

    if (err) return res.json(500);
    Organisation.populate(organisation, options, function(err, org) {
      res.json(org);
    });
  });

var organisationSchema = new mongoose.Schema({
  name: String,
  aliases: [String],
  categories: [String],
  id: {
    type: String,
    unique: true
  },
  idType: String
});

organisationSchema.index({
  name: 'text'
});

module.exports = mongoose.model('organisation', organisationSchema);

1 回答

你很近但有几个笔记：

以下代码假定您还具有 Oranisation 的架构/模型声明 .
我不确定 model 属性是否作为选项（无效）或实际上是 topOrganisations 的属性 .

所以，我留下了 model 因为它不应该引起任何问题，但要注意，如果你使用它作为一个选项它是 not 做你可能认为它是什么 .

// Assuming this schema exists
var organisationSchema = new mongoose.Schema({...});

var topOrganisationsForCategorySchema = new mongoose.Schema({
  category: String,
  topOrganisations: [{
    organisation: {
      type: mongoose.Schema.Types.ObjectId,
      ref: 'Organisation' // Model name convention is to begin with a capital letter
    }
    // Is `model` supposed to be for the ref above? If so, that is declared in the
    //  Organisation model
    model: mongoose.Schema.Types.Mixed
  }]
});

// Assuming these model definitions exist
var Organisation = mongoose.model('Organisation', organisationSchema);
var TopOrganisationsForCategory = mongoose.model('TopOrganisationsForCategory', TopOrganisationsForCategorySchema);

// Assuming there are documents in the organisations collection

TopOrganisationsForCategory
  .find()
  // Because the `ref` is specified in the schema, Mongoose knows which
  //  collection to use to perform the population
  .populate('topOrganisations.organisation')
  .exec(function(err, orgs) {
    if (err) {
      return res.json(500);
    }

    res.json(orgs);
  });

回复于 2024-04-24T10:31:17+08:00

Mongoose填充数组

1 回答

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