Node.js Mongoose 静态函数未被调用
Node.js Mongoose static function not getting called
最近我一直在尝试重写我的 node.js express 应用程序,使其更符合 mvc 原则。我也一直在尝试合并猫鼬。我在调用猫鼬模型上的静态函数时遇到问题。
userSchema.statics.findDuplicates = function (cb) {
console.log("Duplicates called");
this.findOne({ email: this.email }, function(err, result){
if (err) throw err;
if (result) {
cb("A user with this email has already been created.");
} else {
cb("");
}
});
}
现在的问题是我稍后要使用此架构导出模型,因此所有这些都包含在一个文件中:
module.exports = mongoose.model('User', userSchema);
当我稍后在控制器中调用它时,(显然需要事先启动模型):
user.findDuplicates(function(result){
if (result) {
res.send("Selle e-mailiga kasutaja on juba loodud.");
console.log("Duplicates");
} else {
user.save();
res.send("Kasutaja loodud.");
console.log("User created with password.")
}
});
它永远不会被调用。 Node 告诉我它接受了 post,但是出现了 500 内部服务器错误,并且 findDuplicates 中的 "Duplicates called" 没有出现在控制台中。这里出了点问题,我不知道如何解决。
编辑:完整控制器代码:
var express = require('express');
var router = express.Router();
var User = require("../models/user.js");
router.get('/', function(req, res, next) {
res.render('users',{title: "Lisa kasutaja"});
});
router.post('/', function(req, res, next) {
var query = req.body;
var message = "";
console.log("Post recieved " + JSON.stringify(query));
if (query.password != query.repeatPassword){
res.send("Paroolid ei ole võrdsed.");
console.log("Passwords don't match");
} else {
var user = new User({
firstName: query.firstName,
lastName: query.lastName,
telephone: query.telephone,
email: query.email,
password: query.password
});
console.log("User created");
user.findDuplicates(function(result){
if (result) {
res.send("Selle e-mailiga kasutaja on juba loodud.");
console.log("Duplicates");
} else {
user.save();
res.send("Kasutaja loodud.");
console.log("User created with password.")
}
});
}
});
module.exports = router;
您的问题在于您在模型实例中调用静态方法,这是不正确的。请参阅以下差异:
// if you define a static method
userSchema.statics.findDuplicates = function (cb) {
// do your stuff
}
// you call it this way
var User = require("../models/user.js");
User.findDuplicates(function (result) {
// do your stuff
});
// if you define an instance method
userSchema.methods.findDuplicates = function (cb) {
// do your stuff
};
// you call it this way (on an instance of your model)
var User = require("../models/user.js");
var user = new User({
firstName: query.firstName,
lastName: query.lastName,
telephone: query.telephone,
email: query.email,
password: query.password
});
user.findDuplicates(function (result) {
// do your stuff
});
最近我一直在尝试重写我的 node.js express 应用程序,使其更符合 mvc 原则。我也一直在尝试合并猫鼬。我在调用猫鼬模型上的静态函数时遇到问题。
userSchema.statics.findDuplicates = function (cb) {
console.log("Duplicates called");
this.findOne({ email: this.email }, function(err, result){
if (err) throw err;
if (result) {
cb("A user with this email has already been created.");
} else {
cb("");
}
});
}
现在的问题是我稍后要使用此架构导出模型,因此所有这些都包含在一个文件中:
module.exports = mongoose.model('User', userSchema);
当我稍后在控制器中调用它时,(显然需要事先启动模型):
user.findDuplicates(function(result){
if (result) {
res.send("Selle e-mailiga kasutaja on juba loodud.");
console.log("Duplicates");
} else {
user.save();
res.send("Kasutaja loodud.");
console.log("User created with password.")
}
});
它永远不会被调用。 Node 告诉我它接受了 post,但是出现了 500 内部服务器错误,并且 findDuplicates 中的 "Duplicates called" 没有出现在控制台中。这里出了点问题,我不知道如何解决。
编辑:完整控制器代码:
var express = require('express');
var router = express.Router();
var User = require("../models/user.js");
router.get('/', function(req, res, next) {
res.render('users',{title: "Lisa kasutaja"});
});
router.post('/', function(req, res, next) {
var query = req.body;
var message = "";
console.log("Post recieved " + JSON.stringify(query));
if (query.password != query.repeatPassword){
res.send("Paroolid ei ole võrdsed.");
console.log("Passwords don't match");
} else {
var user = new User({
firstName: query.firstName,
lastName: query.lastName,
telephone: query.telephone,
email: query.email,
password: query.password
});
console.log("User created");
user.findDuplicates(function(result){
if (result) {
res.send("Selle e-mailiga kasutaja on juba loodud.");
console.log("Duplicates");
} else {
user.save();
res.send("Kasutaja loodud.");
console.log("User created with password.")
}
});
}
});
module.exports = router;
您的问题在于您在模型实例中调用静态方法,这是不正确的。请参阅以下差异:
// if you define a static method
userSchema.statics.findDuplicates = function (cb) {
// do your stuff
}
// you call it this way
var User = require("../models/user.js");
User.findDuplicates(function (result) {
// do your stuff
});
// if you define an instance method
userSchema.methods.findDuplicates = function (cb) {
// do your stuff
};
// you call it this way (on an instance of your model)
var User = require("../models/user.js");
var user = new User({
firstName: query.firstName,
lastName: query.lastName,
telephone: query.telephone,
email: query.email,
password: query.password
});
user.findDuplicates(function (result) {
// do your stuff
});