SimpleMongoApp

Tested on an Apple Macbook Pro with an M1 processor. Works with Elixir 1.11, OTP 23, but not with Elixir 1.12, OTP 24.

Found clear instructions for how to connect Phoenix to MongoDB at https://medium.com/swlh/setup-phoenix-on-docker-with-mongodb-d411e24dd78c

The only things missing are these:

Before starting Phoenix with mix phx.server -

In the MongoDB console ('mongo') you have to do this: use my_app_db

Then db.article.insert({name: "Ada Lovelace", classification: "programmer"})

Enter show dbs

And you should see 'my_app_db' listed

Now you can do the following

  db.createCollection("my_collection")
  db.createUser(
   {
    user: "root",
    pwd: "rootpassword",
    roles: [
      {
        role: "dbOwner",
        db: "my_app_db"
      }
    ]
   }
  )

NOW start Phoenix, and it should connect using the information in application.ex:

def start(_type, _args) do
  import Supervisor.Spec

  children = [
    supervisor(SimpleMongoAppWeb.Endpoint, []),
    worker(
           Mongo,
           [[
             database: "my_app_db",
             hostname: "localhost",
             username: "root",
             password: "rootpassword"
           ]]
         )
  ]

  opts = [strategy: :one_for_one, name: SimpleMongoApp.Supervisor]
  Supervisor.start_link(children, opts)
end

You can also do this

$ iex -S mix phx.server

Mongo.start_link(
  name: :article,
  database: "my_app_db",
  hostname: "localhost",
  username: "root",
  password: "rootpassword"
)

Mongo.insert_one(:article, "my_app_db", %{name: "John", classification: "man", _id: "5f9d79c5a9f74f0bfb2cf0ff" })

Mongo.insert_one(:article, "my_app_db", %{name: "Ferrari", classification: "car", color: "red", _id: "cafe79c5a9f74f0bfb2cb5cc" })

See https://www.mongodb.com/basics/create-database