query: { byName(name) { return this.where({ name: new RegExp(name, 'i') }); } } }); // Or, Assign a function to the "query" object of our animalSchema animalSchema.query.byName = function(name) { return this.where({ name: new RegExp(name, 'i') }); }; const Animal =...
doc.set({ child: { age: 21 } })now works the same whetherchildis a nested path or a subdocument: Mongoose will overwrite the value ofchild. In Mongoose 5, this operation would mergechildifchildwas a nested path. ObjectIdvalueOf() ...
Schema gotcha type, when used in a schema has special meaning within Mongoose. If your schema requires usingtypeas a nested property you must use object notation: newSchema({broken:{type:Boolean},asset:{name:String,type:String// uh oh, it broke. asset will be interpreted as String}});new...
nested: { stuff: { type: String, lowercase: true, trim: true } } }) 大多数属性类型的意义是显而易见的,除了以下几项: ObjectId:代表在数据库中的一个对象实体,比如,书本对象可以使用他来代表他的作者。实际上他包含的是对象的唯一id(_id)。我们可以在需要的时候使用populate()方法获取某些信息。 Mi...
//该混合类型等同于nested_id:Schema.Types.ObjectId,//主键_fk:Schema.Types.ObjectId,//外键array:[],arrOfString:[String],arrOfNumber:[Number],arrOfDate:[Date],arrOfBuffer:[Buffer],arrOfBoolean:[Boolean],arrOfMixed:[Schema.Types.Mixed],arrOfObjectId:[Schema.Types.ObjectId]nested:{stuff:...
You can specifyquery filters or criteriathat identify the documents to return. click to enlarge For examples, see: Query Documents Query on Embedded/Nested Documents Query an Array Query an Array of Embedded Documents Update Operations Update operations modify existingdocumentsin acollection. MongoDB ...
mixed:Schema.Types.Mixed, //该混合类型等同于nested _id:Schema.Types.ObjectId, //主键 _fk:Schema.Types.ObjectId, //外键 array:[], arrOfString:[String], arrOfNumber:[Number], arrOfDate:[Date], arrOfBuffer:[Buffer], arrOfBoolean:[Boolean], ...
.Types.Mixed,//该混合类型等同于nested_id:Schema.Types.ObjectId,//主键_fk:Schema.Types.ObjectId,//外键array:[],arrOfString:[String],arrOfNumber:[Number],arrOfDate:[Date],arrOfBuffer:[Buffer],arrOfBoolean:[Boolean],arrOfMixed:[Schema.Types.Mixed],arrOfObjectId:[Schema.Types.ObjectId]})...
//该混合类型等同于nested_id:Schema.Types.ObjectId,//主键_fk:Schema.Types.ObjectId,//外键array:[],arrOfString:[String],arrOfNumber:[Number],arrOfDate:[Date],arrOfBuffer:[Buffer],arrOfBoolean:[Boolean],arrOfMixed:[Schema.Types.Mixed],arrOfObjectId:[Schema.Types.ObjectId]nested:{stuff:...
//该混合类型等同于nested_id:Schema.Types.ObjectId,//主键_fk:Schema.Types.ObjectId,//外键array:[],arrOfString:[String],arrOfNumber:[Number],arrOfDate:[Date],arrOfBuffer:[Buffer],arrOfBoolean:[Boolean],arrOfMixed:[Schema.Types.Mixed],arrOfObjectId:[Schema.Types.ObjectId]nested:{stuff:...