node.js - schema.methods 不是函数

Question

我一直在尝试在猫鼬中的用户模式上创建一个方法，但是它一直说方法不是函数，我不知道为什么。我对 mongoose 和 express 还很陌生，而且我很确定我目前已经设置了我的文件，所以我不知道是什么导致了这个问题。作为最后一次尝试，我尝试切换到箭头函数，但这也不起作用。

用户路由文件

const router = require("express").Router();
let user = require("../models/user_model");
const Joi = require("@hapi/joi");
// GET dreams
// POST dreams
// DELETE dreams
// UPDATE dreams
router.route("/").get((req, res) => {
  console.log(user.addType());
  res.send("hello this is a users page");
});

用户模型文件

const mongoose = require("mongoose");
const Schema = mongoose.Schema;

const userSchema = new Schema(
  {
    username: {
      type: String,
      required: true,
      unique: true,
      trim: true,
      min: 3
    },
    password: {
      type: String,
      trim: true,
      required: true,
      min: 6
    }
  },
  {
    timestamps: true
  }
);
userSchema.methods.addTypes = function() {
  console.log("woof");
};
userSchema.methods.joiValidate = data => {
  let Joi = require("@hapi/joi");
  const schema = {
    username: Joi.string()
      .min(6)
      .required(),
    password: Joi.string()
      .min(6)
      .required()
  };
  return schema.validate(data);
};

module.exports = mongoose.model("User", userSchema);

标签： node.jsmongoosemongoose-schema

Answer 1

UPDATE! Other than having typo on your code, you also need to create an instance of your model ('user'). You cannot just call the function of the model.

let user = new user({ // Create an instance first
    username: 'Tester',
    password: '12345678'
})
console.log(user.addType())

you declared

addTypes()

Cheers