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我有一个 MySQL 数据库，其中包含一个名为“posts”的表，我正在通过FeathersJS和feathers-sequelize 读取。目前我有一个带有以下代码的工作原型，它返回所需的结果，但只返回到控制台，还有帖子表的全部内容到 /posts 路由，但是我只想从表中返回一组特定的记录到/帖子。

该表有一个名为 post_status 的列，其中的帖子可以是“已发布”或“草稿”。我只想将“已发布”记录返回到 /posts，但想要实现此服务器端而不是 /posts?status=published。如何做到这一点？

见下面的代码：

const path = require('path');
const feathers = require('@feathersjs/feathers');
const express = require('@feathersjs/express');
const socketio = require('@feathersjs/socketio');

const Sequelize = require('sequelize');
const service = require('feathers-sequelize');

const sequelize = new Sequelize('sandbox', 'sandbox', 'secretpassword', {
  host: 'localhost',
  dialect: 'mysql',

  pool: {
    max: 5,
    min: 0,
    acquire: 30000,
    idle: 10000
  },

  operatorsAliases: false
});

const Post = sequelize.define('posts', {
  post_title: Sequelize.STRING
},
{
  timestamps: false,
  underscored: true,
});

// Create an Express compatible Feathers application instance.
const app = express(feathers());

// Turn on JSON parser for REST services
app.use(express.json());
// Turn on URL-encoded parser for REST services
app.use(express.urlencoded({ extended: true }));
// Enable REST services
app.configure(express.rest());
// Enable Socket.io services
app.configure(socketio());


app.use(express.errorHandler());

//This works fine to return to the console but not to /posts
Post.findAll({
where: {
  post_status: 'published'
}
}) .then(posts => {
    console.log(JSON.stringify(posts));
  });

//This returns the entire contents of the posts table to /posts
app.use('/posts', service({
  Model: Post,
  paginate: {
    default: 10,
    max: 100
  },
}));

// Start the server
const port = 3030;

app.listen(port, () => {
  console.log(`Feathers server listening on port ${port}`);
});

我尝试了服务中 findAll 方法的“位置”，但这并没有改变输出，也没有产生任何错误。

4

1 回答 1

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我通过在服务的 find 方法中使用 where 子句解决了这个问题，请参见下面的完整代码：

const path = require('path');
const feathers = require('@feathersjs/feathers');
const express = require('@feathersjs/express');
const socketio = require('@feathersjs/socketio');

const Sequelize = require('sequelize');
const service = require('feathers-sequelize');

const sequelize = new Sequelize('sandbox', 'sandbox', 'secretpassword', {
  host: 'localhost',
  dialect: 'mysql',

  pool: {
    max: 5,
    min: 0,
    acquire: 30000,
    idle: 10000
  },

  operatorsAliases: false
});

const Post = sequelize.define('posts', {
  post_title: Sequelize.STRING,
  post_status: Sequelize.STRING
  
},
{
  timestamps: false,
  underscored: true,
});

// Create an Express compatible Feathers application instance.
const app = express(feathers());

// Turn on JSON parser for REST services
app.use(express.json());
// Turn on URL-encoded parser for REST services
app.use(express.urlencoded({ extended: true }));
// Enable REST services
app.configure(express.rest());
// Enable Socket.io services
app.configure(socketio());


app.use(express.errorHandler());


const myService = {
  find(params) {
    let posts = Post.findAll({
      where: {
        post_status: 'published'
      }
    });

    return Promise.resolve(posts);
  },
  get(id, params) {},
  create(data, params) {},
  update(id, data, params) {},
  patch(id, data, params) {},
  remove(id, params) {},
  setup(app, path) {}
}

app.use('/posts', myService);

// Start the server
const port = 3030;

app.listen(port, () => {
  console.log(`Feathers server listening on port ${port}`);
});

于 2018-02-17T17:44:28.467 回答