电影实体 var MovieSchema = new Schema({ director: String, catetory: { type: ObjectId, ref: ‘Catetory’ } }); post时form表字段 .form-group label.col-sm-2.control-label 分类选择 each cat in catetories label.radio-inline input(type="radio", name="movie[catetory]", value=cat._id) |#{cat.name} save时 _movie = new Movie(_movieObj); console.log(_movie) console.log(_movie.catetory) console.log(_movieObj.catetory) _movie.save(function(err, movie) { }) 报错信息: console.log(_movie) 打印出来的没有catetory字段? console.log(_movie.catetory) undefined console.log(_movieObj.catetory) 这里却有,是在new 对象是出错了吗? 再下面的错误是神马意思呢 多谢亲们帮忙看看