Quick Tip: mongorc.js

Did you know there is a special file you can edit and add some real useful features (as well as fun) every time you login to the MongoDB command line? Well I’m gonna show you that now!

To use this, create a file called .mongorc.js in your home folder and paste this into it.

Of course this assumes you have the Databases and Collections in the example … so make sure to change those to make sense for your case … if you don’t your shell will just crash.

// 🌮 LearnMongo .mongorc.js example fun!
// !NOTE! In the real world you'd want to check for any "errors" as an error will crash your shell.

// auto set the database
db = db.getSiblingDB("test")

// .aggregate brings back a cursor, so we turn that into an array
const rc_joke = db.jokes.aggregate([{ $sample: { size: 1 } }]).toArray()[0];

//switch database to "cooker"
db = db.getSiblingDB("cooker")

const rc_database = db.getName();
const rc_collection = db.recipes.getName();
const rc_stats = db.stats();
const rc_collection_stats = db.recipes.stats();

// get a random recipe document
const rc_recipe = db.recipes.aggregate([{ $sample: { size: 1 } }]).toArray()[0];

print("");
print("---------------------------------------------------------------");
print("🎭  "+rc_joke.setup);
print("🤡  "+rc_joke.punchline);
print("---------------------------------------------------------------");
print("");
print("---------------------------------------------------------------");
print(`Database: ${rc_database} | ${rc_stats.collections} Collections`); 
print(`Collection: ${rc_collection} | ${rc_collection_stats.count} Documents | ${rc_collection_stats.nindexes} Indexes`);
print("---------------------------------------------------------------");
print("🥘 "+rc_recipe.title+" has "+rc_recipe.likes_count+" likes!");
print("---------------------------------------------------------------");
print("");

prompt = function() {
    return "🥨 > ";
};