connecting mongodb model to apollo-server 2.0 - mongodb

Question

I am following a tutorial which uses mongo database with graphql, currently the tutor uses apollo-server v1 but I am using apollo-server v2, the problem I'm having is where do i make the connection of my models to graphql,
const express = require("express");
const mongoose = require("mongoose");
const bodyParser = require("body-parser");
const cors = require("cors");
require("dotenv").config({ path: "variables.env" });
const Recipe = require("./models/Recipe");
const User = require("./models/User");
// Bring in GraphQL-Express middleware
const { graphiqlExpress, graphqlExpress } = require("apollo-server-express");
const { makeExecutableSchema } = require("graphql-tools");
const { typeDefs } = require("./schema");
const { resolvers } = require("./resolvers");
// Create schema
const schema = makeExecutableSchema({
typeDefs,
resolvers
});
// Connects to database
mongoose
.connect(process.env.MONGO_URI)
.then(() => console.log("DB connected"))
.catch(err => console.error(err));
// Initializes application
const app = express();
const corsOptions = {
origin: "http://localhost:3000",
credentials: true
};
app.use(cors(corsOptions));
// Create GraphiQL application
app.use("/graphiql", graphiqlExpress({ endpointURL: "/graphql" }));
// Connect schemas with GraphQL
app.use(
"/graphql",
bodyParser.json(),
graphqlExpress({
schema,
context: {
Recipe,
User
}
})
);
const PORT = process.env.PORT || 4444;
app.listen(PORT, () => {
console.log(`Server listening on PORT ${PORT}`);
});
so in apollo-server v1 you pass in your mongo schema (models) in graphqlExpress
Connect schemas with GraphQL
app.use(
"/graphql",
bodyParser.json(),
graphqlExpress({
schema,
context: {
Recipe,
User
}
})
);
but in v2 you no longer use graphqlExpress function,
https://www.apollographql.com/docs/apollo-server/v2/migration-two-dot.html
so how/where do i pass in my database models to?
currently I have this
const express = require ('express')
const mongoose = require ('mongoose')
const { ApolloServer } = require('apollo-server-express');
require('dotenv').config({path: 'variables.env'})
// mongo schemas/models
const Recipe = require('./models/Recipe')
const User = require('./models/User')
//Graphql schema
const {typeDefs} = require('./schema')
const {resolvers} = require('./resolvers')
// connects to database
mongoose.connect(process.env.MONGO_URI, {useNewUrlParser: true} )
.then(()=> console.log('DB connected'))
.catch(error => console.log(error))
const PORT = process.env.PORT || 4444;
const server = new ApolloServer({ typeDefs, resolvers });
const app = express();
server.applyMiddleware({ app });
app.listen({ port: PORT }, () =>
console.log(`🚀 Server ready at http://localhost:${PORT}${server.graphqlPath}`)
)

Answer 1

If you want to be exactly like you were before, you need to add the context function onto your ApolloServer init:
const server = new ApolloServer({
typeDefs,
resolvers,
context: ({ req }) => ({
Recipe,
User
})
});

Answer 2

This example works perfect with PG, if you are using Mongo, just replace pg calls with mongoose and you should be good to go.