Graphql - call query in graphqlplayground from connected DB - graphql

Question

I'm just starting with graphql and having a few problems calling a basic query in the playground.
I have a server.js
const mongoose = require('mongoose');
require('dotenv').config({ path: 'variables.env' })
const { ApolloServer } = require('apollo-server')
//Monogoose schemas
const Recipe = require('./models/Recipe');
const { typeDefs } = require('./schema');
const { resolvers } = require('./resolvers')
const server = new ApolloServer({
typeDefs,
resolvers
})
// Connect to DB
mongoose
.connect(process.env.MONGO_URI, { autoIndex: false })
.then(() => {
console.log('DB connected')
})
.catch(err => console.error(err))
server.listen().then(({ url }) => {
console.log(`server listening on ${url}`)
})
a schema.js
const gql = require('graphql-tag');
exports.typeDefs = gql`
type Recipe{
_id: ID
name: String!
category: String!
description: String!
instructions: String!
createdDate: String
likes: Int
username: String
}
type Query {
getAllRecipes: [Recipe]
}
`
a resolvers.js
exports.resolvers = {
Query: {
getAllRecipes: async (root, args, { Recipe }) => {
const allRecipes = await Recipe.find()
return allRecipes
}
},
and a mongoose schema
const mongoose = require('mongoose');
const Schema = mongoose.Schema
const RecipeSchema = new Schema({
name: {
type: String,
required: true
},
category: {
type: String,
required: true
},
description: {
type: String,
required: true
},
instructions: {
type: String,
required: true
},
createdDate: {
type: Date,
default: Date.now
},
likes: {
type: Number,
default: 0
},
username: {
type: String
}
})
module.exports = mongoose.model('Recipe', RecipeSchema)
The server and connection to the DB work and when I open the playground the schema is shown. I have data in the DB
When I run query:
query{
getAllRecipes{
name
}
}
I get an error "Cannot read property 'find' of undefined",
Can anyone see what I'm doing wrong here.

Answer 1

On your resolvers.js file you're expecting Recipe to come from the context argument, but you did not add it anywhere from what I can tell from your snippets.
During the initialization of your ApolloServer instance, you can pass a context property that will be injected on all resolvers:
...
const server = new ApolloServer({
typeDefs,
resolvers,
context: {
Recipe,
},
});
The context property can also be a function that returns an object at the end, in case you want something more elaborated.
For more details on the option and also on others you can pass, see: https://www.apollographql.com/docs/apollo-server/api/apollo-server/.