将Sequelize连接到安装了Homebrew的Postgres

我正在尝试使用Sequelize连接到本地安装的Postgres。我通过Homebrew安装了它，并确认我可以连接和查询数据库。当我运行Sequelize时，它会输出有效的查询（我通过控制台运行它们），但数据库不会更改，也不会记录任何连接。我当前的代码是：

var sequelize = new Sequelize('reliable_rabbit', 'mohammad', null, {
  host: "127.0.0.1",
  dialect: 'postgres',
  define: { timestamps: true, paranoid: true, underscore: true }//,
});

我可以通过：psql -d reliable_rabbit -U mohammad -h 127.0.0.1连接到数据库。我使用的是Sequelize的1.5.0-beta版本。

编辑：

在我的入口点（app/app.js）中，不记录任何内容：

var models = require('./models');
models.Post.sync().success(function(){
  console.log("Success!")
}).error(function(error){
  console.log("Error: " + error);
});

app/models.js:

var Sequelize = require("sequelize")
var sequelize = new Sequelize('reliable_rabbit', 'mohammad', null, {
  host: "127.0.0.1",
  logging: console.log,
  dialect: 'postgres',
  define: { timestamps: true, paranoid: true, underscore: true }//,
});
exports.Post = require("../models/post")(sequelize);

最后是models/post.js:

var Sequelize＝require（"Sequelize"）；

module.exports = function(sequelize) {
  return sequelize.define('post', {
    title: { type: Sequelize.STRING, validate: { notEmpty: true } },
    permalink: { type: Sequelize.STRING, validate: { is: ["^[a-z]+[a-z'-][a-z]+$"] } },
    content: { type: Sequelize.TEXT, validate: { notEmpty: true } },
    published: { type: Sequelize.BOOLEAN, defaultValue: false },
    published_at: { type: Sequelize.DATE }
  },{
    instanceMethods: {
      generatePermalink: function() {
        this.permalink = this.title.toLowerCase().replace(/[^a-z]/g, "-").replace(/^-+|-+$/g,'').replace(/'-{2,}/g, '-');
      }
    }
  });
};