var mongoose = require('mongoose'); var Schema = mongoose.Schema; var ObjectId = Schema.ObjectId; var ReplySchema = new Schema({ content: { type: String }, topic_id: { type: ObjectId, index: true }, author_id: { type: ObjectId }, reply_id : { type: ObjectId }, create_at: { type: Date, default: Date.now }, update_at: { type: Date, default: Date.now }, content_is_html: { type: Boolean } }); mongoose.model('Reply', ReplySchema);