Membuat kueri koleksi Firestore dengan filter boolean eq
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Membuat kueri koleksi Firestore dengan filter boolean eq
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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 page demonstrates how to query a Firestore collection and filter results based on a boolean value.\u003c/p\u003e\n"],["\u003cp\u003eCode samples are provided in C#, Go, Java, Node.js, PHP, Python, and Ruby, all demonstrating a query for documents where the "capital" field is true.\u003c/p\u003e\n"],["\u003cp\u003eAll code samples require setting up Application Default Credentials for Firestore authentication, as detailed in the provided link.\u003c/p\u003e\n"],["\u003cp\u003eThe core operation involves using a \u003ccode\u003ewhereEqualTo\u003c/code\u003e or similar function to filter documents within a collection.\u003c/p\u003e\n"],["\u003cp\u003eFurther code samples can be found on the \u003ca href=\"/docs/samples?product=firestore\"\u003eGoogle Cloud sample browser\u003c/a\u003e.\u003c/p\u003e\n"]]],[],null,["# Query a Firestore collection with a boolean eq filter\n\nExplore further\n---------------\n\n\nFor detailed documentation that includes this code sample, see the following:\n\n- [Perform simple and compound queries in Cloud Firestore](https://firebase.google.com/docs/firestore/query-data/queries)\n- [Query and filter data](/firestore/native/docs/query-data/queries)\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 CollectionReference citiesRef = db.Collection(\"cities\");\n Query query = citiesRef.WhereEqualTo(\"Capital\", true);\n QuerySnapshot querySnapshot = await query.GetSnapshotAsync();\n foreach (DocumentSnapshot documentSnapshot in querySnapshot.Documents)\n {\n Console.WriteLine(\"Document {0} returned by query Capital=true\", documentSnapshot.Id);\n }\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 query := client.Collection(\"cities\").Where(\"capital\", \"==\", true)\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 // Create a reference to the cities collection\n CollectionReference cities = db.collection(\"cities\");\n // Create a query against the collection.\n Query query = cities.whereEqualTo(\"capital\", true);\n // retrieve query results asynchronously using query.get()\n ApiFuture\u003cQuerySnapshot\u003e querySnapshot = query.get();\n\n for (DocumentSnapshot document : querySnapshot.get().getDocuments()) {\n System.out.println(document.getId());\n }\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 // Create a reference to the cities collection\n const citiesRef = db.collection('cities');\n\n // Create a query against the collection\n const allCapitalsRes = citiesRef.where('capital', '==', true);\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 $citiesRef = $db-\u003ecollection('samples/php/cities');\n $query = $citiesRef-\u003ewhere('capital', '=', true);\n $snapshot = $query-\u003edocuments();\n foreach ($snapshot as $document) {\n printf('Document %s returned by query capital=true' . PHP_EOL, $document-\u003eid());\n }\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 cities_ref = db.collection(\"cities\")\n\n query = cities_ref.where(filter=FieldFilter(\"capital\", \"==\", True))\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 cities_ref = firestore.col collection_path\n\n query = cities_ref.where \"capital\", \"=\", true\n\n query.get do |city|\n puts \"Document #{city.document_id} returned by query capital=true.\"\n end\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)."]]