javascript - 为什么它向我抛出错误 : TypeError: project. save is not a function

Question

我的 Controller 文件:

'use strict'

var Project = require('../models/project');

function saveProject(req, res){  

    var project = new Project();

    Project.find({name: project.name}, (err, project)=>{

        if(err) return res.status(500).send({message: 'Error en la peticion'});

        if(project && project.length >=1){
            return res.status(404).send({message: 'El proyecto ya existe en la base dedatos'});
        }else{

            project.save((err, projectStored)=>{

                if(err) return res.status(500).send({message: 'Error en la peticion'});

                if(!projectStored) return res.status(404).send({message: 'No se ha podido salvar el proyecto'});

                return res.status(200).send({project: projectStored});
            });
        }         
    });
}

module.exports = {
    saveProject
}

我的模型文件:

'use strict'

var mongoose = require('mongoose');
var Schema = mongoose.Schema;

var ProjectSchema = Schema({

    name: String,
    description: String,
    category: String, 
    year: Number,
    langs: String,
    image: String    

});

module.exports = mongoose.model('Project', ProjectSchema);

我的路线文件:

'use strict'

var express = require('express');
var projectController = require('../controllers/project');

var api = express.Router();

// Middlewares de Autenticacion


// Llamamos a los metodos y le definimos su ruta
api.post('/save-project', projectController.saveProject);

// Exportamos
module.exports = api;

Answer 1

这里:

Project.find({name: project.name}, (err, project)=>{ ...
                                         ^^^^^^^ you are receiving `project` as argument

请注意，项目是参数，而不是您在上面一行定义的变量中的项目:

var project = new Project();

这一定是你错误期望的原因。