使用sails.js 和postgreSQL 时出错（使用sails-postgresql 模块）

Question

我想问一个问题。我正在使用sails.js 和PostgreSQL（使用sails-postgresql 模块）开发一个应用程序。我使用 UUID 作为主键类型而不是整数。但是当我尝试向我的数据库插入数据时出现了一些错误。

我的模特UserModel.js

var uuid = require('node-uuid'); 

module.exports = {

    adapter: 'somePostgresqlServer',
    autoPK: false,
    migrate: 'safe',
    attributes: {
        ID: {
            primaryKey: true,
            type: 'string',
            defaultsTo: function (){
                return uuid.v4(); 
            },
            unique: true,
            index: true,
            uuidv4: true
        },

        username: {
            type: 'string',
            required: true,
            unique: true
        }   
    }
};

我在控制器中的创建函数

create: function(req, res) {
        if (!req.param('_username') || !req.param('_newPassword') ||
            !req.param('_confirmPassword') || !req.param('_emailAddress') ||
            !req.param('_firstName') || !req.param('_lastName')) {
            var errorMessage = ["All field are required to sign up"];
            req.session.flash = {
                err : errorMessage
            }
            res.redirect('/login');
            return;
        }

        if (req.param('_newPassword') != req.param('_confirmPassword')) {
            var errorMessage = ["New password and confirm password must be same"];
            req.session.flash = {
                err : errorMessage
            }
            res.redirect('/login');
            return; 
        }

        UserModel.create({
            username: req.param('_username'),
            encryptedPassword: req.param('_newPassword'),
            emailAddress: req.param('_emailAddress'),
            firstName: req.param('_firstName'),
            lastName: req.param('_lastName')
        }).exec(function(err,post) {
            if (err) {
                return res.error();
            }

            res.redirect('/');
        })

        res.redirect('/');
    }

错误

/home/***/***/***/node_modules/sails-postgresql/lib/adapter.js:393
        Object.keys(collection.schema).forEach(function(schemaKey) {
               ^
TypeError: Object.keys called on non-object
    at Function.keys (native)
    at __CREATE__ (/home/***/***/***/node_modules/sails-postgresql/lib/adapter.js:393:16)
    at after (/home/***/***/***/node_modules/sails-postgresql/lib/adapter.js:1155:7)
    at /home/***/***/***/node_modules/sails-postgresql/lib/adapter.js:1049:7
    at /home/***/***/***/node_modules/sails-postgresql/node_modules/pg/lib/pool.js:77:9
    at dispense (/***/***/***/node_modules/sails-postgresql/node_modules/pg/node_modules/generic-pool/lib/generic-pool.js:250:16)
    at Object.me.acquire (/home/***/***/***/node_modules/sails-postgresql/node_modules/pg/node_modules/generic-pool/lib/generic-pool.js:319:5)
    at Object.pool.connect (/home/***/***/***/node_modules/sails-postgresql/node_modules/pg/lib/pool.js:71:12)
    at PG.connect (/home/***/***/***/node_modules/sails-postgresql/node_modules/pg/lib/index.js:49:8)
    at spawnConnection (/home/***/***/***/node_modules/sails-postgresql/lib/adapter.js:1048:8)
    at Object.module.exports.adapter.create (/home/***/***/***/node_modules/sails-postgresql/lib/adapter.js:361:7)
    at module.exports.create (/usr/lib/node_modules/sails/node_modules/waterline/lib/waterline/adapter/dql.js:84:13)
    at bound.createValues (/usr/lib/node_modules/sails/node_modules/waterline/lib/waterline/query/dql/create.js:214:16)
    at /usr/lib/node_modules/sails/node_modules/waterline/lib/waterline/query/dql/create.js:74:20
    at /usr/lib/node_modules/sails/node_modules/waterline/node_modules/async/lib/async.js:708:13
    at /usr/lib/node_modules/sails/node_modules/waterline/node_modules/async/lib/async.js:49:16

我希望你能帮助我。感谢您的关注:)

Answer 1

试试这个：

型号

    var uuid = require('node-uuid'); 

    module.exports = {

        adapter: 'somePostgresqlServer',
        autoPK: false,
        attributes: {
            id: {
                primaryKey : true,
                type       : 'string',
                defaultsTo : function (){
                    return uuid.v4(); 
                },
                unique     : true,
                index      : true
            },

            username: {
                type     : 'string',
                required : true,
                unique   : true
            }
        }
    };

控制器

    create: function(req, res) {
        var username        = req.param('_username'),
            newPassword     = req.param('_newPassword'),
            confirmPassword = req.param('_confirmPassword'),
            emailAddress    = req.param('_emailAddress'),
            firstName       = req.param('_firstName'),
            lastName        = req.param('_lastName');

        if (!(username || newPassword || confirmPassword || emailAddress || firstName || lastName)) {
            var errorMessage = ["All field are required to sign up"];
            req.session.flash = {
                err : errorMessage
            }
            return res.redirect('/login');
        }

        if (newPassword != confirmPassword) {
            var errorMessage = ["New password and confirm password must be same"];
            req.session.flash = {
                err : errorMessage
            }
            return res.redirect('/login');
        }

        UserModel
          .create({
            username          : username,
            encryptedPassword : newPassword,
            emailAddress      : emailAddress,
            firstName         : firstName,
            lastName          : lastName
          })
          .then(function(post) {
            res.redirect('/');
          })
          .catch(res.negotiate);
    }

1. 在模型定义中，不存在migrate，它在模型配置中。
2. uuidv4 也不是有效属性。
3. id 字段在您使用 Blueprint API 时是必需的，请在 node_modules 的风帆中查看 actionUtil 的蓝图挂钩。
4. 当你有异步时，不要在控制器末尾调用res.redirect。过程中，当查询尚未完成时，它将给出竞争条件，您将被重定向。

其实我不太确定它是否能解决你的问题，但你可以尝试一下，稍后再给出结果。