Remotely Access MongoDB¶
Overview¶
Query data stored in MongoDB directly from your client application code with the MongoDB query language by using MongoDB Realm's MongoClient. MongoDB Realm provides data access rules for collections to securely retrieve results based on the logged-in user or the content of each document.
Prerequisites¶
Before you can remotely access mongodb, you must:
Use the MongoClient to Query For Data in Your Collection¶
Note
The following code snippet requires that the user is already authenticated.
// mongodb-atlas is the cluster service name let client = app.currentUser!.mongoClient("mongodb-atlas") // Select the database let database = client.database(named: "tracker") // Select the collection let collection = database.collection(withName: "Task") // Using the user's id to look up tasks let user = app.currentUser! let identity = user.id // Run the query collection.find(filter: ["_partition": AnyBSON(identity)], { (result) in // Note: this completion handler may be called on a background thread. // If you intend to operate on the UI, dispatch back to the main // thread with `DispatchQueue.main.async {}`. switch result { case .failure(let error): // Handle errors print("Call to MongoDB failed: \(error.localizedDescription)") return case .success(let documents): // Print each document print("Results:") documents.forEach({(document) in print("Document:") document.forEach({ (key, value) in print(" key: \(key), value: \(value!)") }) }) } })
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