Membuat referensi subkoleksi Firestore
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Membuat referensi subkoleksi Firestore
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[[["Mudah dipahami","easyToUnderstand","thumb-up"],["Memecahkan masalah saya","solvedMyProblem","thumb-up"],["Lainnya","otherUp","thumb-up"]],[["Sulit dipahami","hardToUnderstand","thumb-down"],["Informasi atau kode contoh salah","incorrectInformationOrSampleCode","thumb-down"],["Informasi/contoh yang saya butuhkan tidak ada","missingTheInformationSamplesINeed","thumb-down"],["Masalah terjemahan","translationIssue","thumb-down"],["Lainnya","otherDown","thumb-down"]],[],[[["\u003cp\u003eThis content demonstrates how to create a reference to a document within a Firestore subcollection, using various programming languages.\u003c/p\u003e\n"],["\u003cp\u003eThe examples show a consistent pattern where a subcollection named "messages" is nested under a "rooms" collection, specifically referencing "message1" within "roomA".\u003c/p\u003e\n"],["\u003cp\u003eEach code sample, in C#, Go, Java, Node.js, PHP, Python, and Ruby, illustrates the specific syntax for establishing this subcollection reference.\u003c/p\u003e\n"],["\u003cp\u003eSetting up Application Default Credentials is a prerequisite for authenticating with Firestore, as per the instructions provided across the different languages.\u003c/p\u003e\n"],["\u003cp\u003eThe Cloud Firestore Data Model documentation provides further information and context on how the data structure functions.\u003c/p\u003e\n"]]],[],null,["# Create a Firestore subcollection reference\n\nExplore further\n---------------\n\n\nFor detailed documentation that includes this code sample, see the following:\n\n- [Cloud Firestore Data model](https://firebase.google.com/docs/firestore/data-model)\n- [Data model](/firestore/native/docs/data-model)\n\nCode sample\n-----------\n\n### C#\n\n\nTo authenticate to Firestore, set up Application Default Credentials.\nFor more information, see\n\n[Set up authentication for a local development environment](/docs/authentication/set-up-adc-local-dev-environment).\n\n DocumentReference documentRef = db\n .Collection(\"Rooms\").Document(\"RoomA\")\n .Collection(\"Messages\").Document(\"Message1\");\n\n### Go\n\n\nTo authenticate to Firestore, set up Application Default Credentials.\nFor more information, see\n\n[Set up authentication for a local development environment](/docs/authentication/set-up-adc-local-dev-environment).\n\n\n import (\n \t\"cloud.google.com/go/firestore\"\n )\n\n func createSubcollectionReference(client *firestore.Client) {\n \tmessageRef := client.Collection(\"rooms\").Doc(\"roomA\").\n \t\tCollection(\"messages\").Doc(\"message1\")\n\n \t_ = messageRef\n }\n\n### Java\n\n\nTo authenticate to Firestore, set up Application Default Credentials.\nFor more information, see\n\n[Set up authentication for a local development environment](/docs/authentication/set-up-adc-local-dev-environment).\n\n // Reference to a document in subcollection \"messages\"\n DocumentReference document =\n db.collection(\"rooms\").document(\"roomA\").collection(\"messages\").document(\"message1\");\n\n### Node.js\n\n\nTo authenticate to Firestore, set up Application Default Credentials.\nFor more information, see\n\n[Set up authentication for a local development environment](/docs/authentication/set-up-adc-local-dev-environment).\n\n const messageRef = db.collection('rooms').doc('roomA')\n .collection('messages').doc('message1');\n\n### PHP\n\n\nTo authenticate to Firestore, set up Application Default Credentials.\nFor more information, see\n\n[Set up authentication for a local development environment](/docs/authentication/set-up-adc-local-dev-environment).\n\n $document = $db\n -\u003ecollection('rooms')\n -\u003edocument('roomA')\n -\u003ecollection('messages')\n -\u003edocument('message1');\n\n### Python\n\n\nTo authenticate to Firestore, set up Application Default Credentials.\nFor more information, see\n\n[Set up authentication for a local development environment](/docs/authentication/set-up-adc-local-dev-environment).\n\n room_a_ref = db.collection(\"rooms\").document(\"roomA\")\n message_ref = room_a_ref.collection(\"messages\").document(\"message1\")\n\n### Ruby\n\n\nTo authenticate to Firestore, set up Application Default Credentials.\nFor more information, see\n\n[Set up authentication for a local development environment](/docs/authentication/set-up-adc-local-dev-environment).\n\n message_ref = firestore.col(\"rooms\").doc(\"roomA\").col(\"messages\").doc(\"message1\")\n\nWhat's next\n-----------\n\n\nTo search and filter code samples for other Google Cloud products, see the\n[Google Cloud sample browser](/docs/samples?product=firestore)."]]
