SailsJS 最佳实践，在其他模型初始化之前用数据播种数据库 [英] SailsJS best practice to seed database with data before other Models are initialized

问题描述

有一个模型，所有其他模型都假设它存在.它应该在调用任何 API 函数之前进行初始化.

There is a model that all other models assume its existence. It should be initialized before any API function is called.

我这样做的方式(不起作用):

The way I do this (it doesn't work):

1) 在 api/models 中定义模型，我们称之为 Location.js

1) Define model in api/models, let's call it Location.js

2) 将以下内容添加到 bootstrap.js

2) Add the following to bootstrap.js

    var Locations = require('../api/models/Locations.js');

    module.exports.bootstrap = function (cb) {

      // seed the database with Locations
        var locationsObj = {
            country: 'Australia',
            states: ['Brisbane', 'Perth', 'Sydney']
        };
        Location.create(locationsObj, function locationsObj(err, locations) {
            if (err) {
                cb(err);
            }
            console.log('locations created: ', locations);
        });
  }

问题 1这是进行初始数据库播种的正确方法吗?

Question 1 Is it the right way to do initial database seeding?

我收到此错误:

Locations.create(locationsObj, function locationsObj(err, locations) {
          ^
TypeError: Object #<bject> has no method 'create'

问题 2bootstrap的cb函数是如何工作的?如果出现错误怎么办?

Question 2 How does the cb function of bootstrap work? what if there as an error, what to do?

推荐答案

风帆模型全球可用；所以你不需要在 bootstrap.js 中要求.

The sails models are globally available; so you don't need to require at bootstrap.js.

这是我用来播种我的数据库的东西.(请参阅我随附的链接以了解要点)

This is what I use to seed my database. (See the links I enclose to go to the gists)

1. 在 config/models.js 中包含种子函数.您在此文件中声明的方法将扩展到您的所有模型.链接:种子方法要点

定义种子将在您的模型中使用的数据链接:模型的种子数据

Define de data the seed will consume in your model Link: Model's seed data

使用异步调用 config/bootstrap.js 中的种子方法.链接:调用方法

Call the seed method in config/bootstrap.js using async. Link: Calling method

更新

也看看这个威胁:最佳将表更改迁移到生产 Sailsjs 表的方法

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