猫鼬查找和 findOne 中间件不工作

Question

If 具有以下架构和中间件挂钩，但从未调用 find 和 findOne 挂钩。 save 和 update 挂钩按预期工作。根据 Mongoose Middleware 文档，这应该可用。

// define the schema for our recs model
var recSchema = mongoose.Schema({
  dis: String,  // rec display
  mod: String   // modified date (HAYSTACK FORMAT)
}, {
  strict: false
});

// create the model for recs
var model = recsdb.model('recs', recSchema);

recSchema.pre('save', function(next) {
  this.mod = HDateTime.now(HTimeZone.UTC).toZinc();
  next();
});
recSchema.pre('update', function(next) {
  this.mod = HDateTime.now(HTimeZone.UTC).toZinc();
  next();
});
recSchema.pre('find', function() {
  console.log("Pre Find");
});
recSchema.pre('findOne', function() {
  console.log("Pre Find One");
});
recSchema.post('find', function() {
  console.log("Post Find");
});
recSchema.post('findOne', function() {
  console.log("Post Find One");
});

Answer 1

问题最终是物品的顺序。显然，您必须在设置查找挂钩后定义模型。不过，保存和更新挂钩不需要这样做。

// define the schema for our recs model
var recSchema = mongoose.Schema({
  dis: String,  // rec display
  mod: String   // modified date (HAYSTACK FORMAT)
}, {
  strict: false
});

recSchema.pre('save', function(next) {
  this.mod = HDateTime.now(HTimeZone.UTC).toZinc();
  next();
});
recSchema.pre('update', function(next) {
  this.mod = HDateTime.now(HTimeZone.UTC).toZinc();
  next();
});
recSchema.pre('find', function(next) {
  console.log("Pre Find");
  next();
});
recSchema.pre('findOne', function(next) {
  console.log("Pre Find One");
  next();
});
recSchema.post('find', function(doc) {
  console.log("Post Find");
});
recSchema.post('findOne', function(doc) {
  console.log("Post Find One");
});

// create the model for recs
var model = recsdb.model('recs', recSchema);

猫鼬查找和 findOne 中间件不工作

Mongoose find and findOne middleware not working

middleware

find

mongoose

node.js