I am the beginner in programming. Please help me out, dear experienced programmers, if you can.
Now I am trying to do a simple To-do app. And I want to use there database. I am stuck for already 12 hours on the stage where it is needed to connect database.
I have the following error after running the command “node index.js”:
throw new MongoParseError('Invalid scheme, expected connection string to start with "mongodb://" or "mongodb+srv://"');
^
MongoParseError: Invalid scheme, expected connection string to start with "mongodb://" or "mongodb+srv://" ...
I have the next code in index.js:
const { ApolloServer, gql } = require("apollo-server");
const { MongoClient } = require("mongodb");
const dotenv = require("dotenv");
dotenv.config();
const { DB_URI, DB_NAME } = process.env;
// A schema is a collection of type definitions (hence "typeDefs")
// that together define the "shape" of queries that are executed against
// your data.
const typeDefs = gql`
# Comments in GraphQL strings (such as this one) start with the hash (#) symbol.
# This "Book" type defines the queryable fields for every book in our data source.
type Book {
title: String
author: String
}
# The "Query" type is special: it lists all of the available queries that
# clients can execute, along with the return type for each. In this
# case, the "books" query returns an array of zero or more Books (defined above).
type Query {
books: [Book]
}
`;
const books = [
{
title: "The Awakening",
author: "Kate Chopin",
},
{
title: "City of Glass",
author: "Paul Auster",
},
];
// Resolvers define the technique for fetching the types defined in the
// schema. This resolver retrieves books from the "books" array above.
const resolvers = {
Query: {
books: () => books,
},
};
const start = async () => {
const client = new MongoClient(DB_URI, {
useNewUrlParser: true,
useUnifiedTopology: true,
});
await client.connect();
const db = client.db(DB_NAME);
// The ApolloServer constructor requires two parameters: your schema
// definition and your set of resolvers.
const server = new ApolloServer({
typeDefs,
resolvers,
csrfPrevention: true,
cache: "bounded",
});
// The `listen` method launches a web server.
server.listen().then(({ url }) => {
console.log(`🚀 Server ready at ${url}`);
});
};
start();
So a big welcome to the coders club! What I gathered so far is that you’re trying to use Apollo GrapQL to connect to a MongoDB database, to create a todo list app. Is this correct?
Could you provide some more details:
What is the tutorial that you’re trying to follow?
The error seems to say that DB_URI contains invalid MongoDB URI connection string. Could you insert a console.log(DB_URI) statement somewhere before new MongoClient to verify the content of that variable
Regarding MongoDB + Node, I would also suggest you take a look at the free MongoDB University courses: M001 MongoDB Basics and M220JS MongoDB for JavaScript Developers (although please note that M220JS assumes some familiarity with Javascript/Node).
did you install dotenv package, I almost had same error and I found out I need to install dotenv package so I can access to .env variables dotenv in npm registry
I don’t know if you are still having this problem, but as one other person said you need to remove the semi-colon ( ; ) from your variables in your .env file. That should make the process.env work properly.
