Question

我正在尝试将apollo服务器与mlab上的mongodb连接（我也尝试了使用本地mongo）。我可以很好地连接到数据库，尽管在使用graphql查询进行测试时什么也没有返回。我只是不知道如何实际从数据库取回数据。我正在使用最新的apollo-server-express。

我从各种教程和文档中总结了这些内容，但是找不到关于我的问题的明确答案。可能缺少一些非常明显的东西。

Server.js

import express from 'express';
import { ApolloServer, gql } from 'apollo-server-express';
import Mongoose from 'mongoose';

import { Post } from './models/Post';

const app = express();

Mongoose.Promise = global.Promise;

Mongoose.connect('mongodb://<username>:<pw>@ds151282.mlab.com:51282/groupin', { useNewUrlParser: true })
  .then(()=> console.log('DB connected'))
  .catch(error => console.log(error))

const typeDefs = gql`
  type Post {
    title: String
    description: String
    author: String
    url: String
  }
  type Query {
    allPosts: [Post]
  }
`;

const resolvers = {
  Query: {
    allPosts(parent, args) {
      return Post.find({})
    }
  }
};


const apollo = new ApolloServer({
  typeDefs, 
  resolvers,
  context: ({req}) => ({ Post })
});

apollo.applyMiddleware({ app })

app.listen(4000, () => {
  console.log(` Server ready at http://localhost:4000${apollo.graphqlPath}`);
});

Post.js

import Mongoose from 'mongoose';

const PostSchema = {
  title: String,
  description: String,
  author: String,
  url: String
};

const Post = Mongoose.model('Post', PostSchema);
export { Post };

Answer 1

尝试使用猫鼬模式而不是普通对象

Post.js

import Mongoose from 'mongoose';

const PostSchema = new Mongoose.Schema({
  title: String,
  description: String,
  author: String,
  url: String
});

const Post = Mongoose.model('Post', PostSchema);
export { Post };

将阿波罗服务器与mongodb mongoos连接

1 个答案: