const mongoose = require('mongoose'); const Schema = mongoose.Schema; const CommentSchema = new Schema({ content: { type: String, required: true }, author: { type: Schema.Types.ObjectId, ref: 'User', required: true }, post: { type: Schema.Types.ObjectId, ref: 'Post', required: true }, createdAt: { type: Date, default: Date.now } }); module.exports = mongoose.model('Comment', CommentSchema);